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Words and phrases whose definition contains leaves:   (3233 results)

1 letter:
.

2 letters:
ti

3 letters:
4to, 8vo, bay, bud, cat, cos, cut, hop, ivy, kat, oak, qat, rue, soy, tea, yew

4 letters:
alga, aloe, bare, bast, blow, cive, clog, coca, cole, dalo, disa, dita, fall, flag, goer, hemp, hops, hoya, husk, inga, iris, kail, kale, kali, khat, leaf, leek, lens, lime, mate, mica, mint, nagi, napa, ombu, palm, pixy, pole, poon, puka, quat, rake, read, root, rust, sage, soja, soya, spat, taro, tipu, titi, turn

5 letters:
abele, agave, alate, alder, algae, aloes, arere, aspen, avens, baccy, basal, basil, betel, bhang, brake, briar, brier, canna, catha, ceiba, chaff, chard, check, chive, clear, cress, crisp, crown, cycad, cycas, dioon, draba, ferny, folio, fugue, galax, ganja, green, hakea, holly, hyson, islay, joint, kiaat, kinin, knawe, koala, kudzu, larch, leafy, leave, linum, mahoe, marum, medic, melia, msasa, naiad, onion, orpin, papaw, pichi, pixie, pusly, pyxie, ramee, ramie, roble, saman, samba, savoy, sedge, senna, shaky, shuck, siris, sisal, sissu, sloth, smoke, sprig, stalk, stick, straw, strip, swirl, tamus, tansy, thyme, tulip, ulmus, uncut, vetch, vigna, vitis, yacca, zaman

6 letters:
abelia, achras, adapid, ananas, aralia, autumn, banana, binate, bonduc, borage, briony, bryony, buntal, cassia, catgut, chicot, chives, citrus, clocks, cocain, coleus, comate, comose, cosmea, cosmos, crambe, crocus, cymbid, daphne, emigre, endive, entire, fallen, fennel, fescue, fodder, fungus, galaxy, gingko, ginkgo, gnetum, greens, henbit, hyssop, idesia, indigo, insert, jupati, jupaty, kaffir, knawel, laurus, leafed, leaved, leaver, linden, lontar, madnep, medick, mimosa, morrow, mosaic, myrtle, nageia, obeche, obechi, octavo, oolong, orpine, paired, palmae, papaia, papaya, papery, pawpaw, phaius, phloem, pistia, platan, privet, protea, psocid, quarto, ramona, reefer, rolled, rugose, rustle, scilla, shawny, simple, sisham, sissoo, sorbus, sorrel, souari, spliff, squill, stover, sundew, sunray, tipper, tisane, upcast, veggie, veinal, wickup, yarrow, zamang

7 letters:
abscise, acerate, acerose, aconite, alehoof, alfalfa, amorpha, anemone, ashcake, astilbe, awlwort, ayapana, banksia, barilla, bay rum, beebalm, begonia, bogbean, buckeye, bugbane, bugloss, buildup, bullate, bulrush, burning, cabbage, caimito, calamus, caraway, cardoon, carrizo, catalpa, catechu, cattail, cauline, celtuce, chervil, chicory, cocaine, collard, comfrey, cypress, dasheen, daylily, deutzia, dombeya, eightvo, elkwood, emigree, ephedra, eugenia, fanwort, filaree, filaria, flaming, foliate, foliose, frogbit, garland, geebung, ginseng, girasol, gladdon, gosmore, guayule, gumweed, hemlock, henbane, iceberg, imbauba, joewood, lacepod, leafing, lettuce, lewisia, liparis, listera, lithops, logwood, lucerne, madrona, madrono, mahagua, majagua, malaxis, maranta, milfoil, mullein, mustard, myrrhis, nailrod, nauclea, nin-sin, nitweed, oregano, ormosia, othonna, outgoer, pakchoi, palmyra, parsley, pe-tsai, pigweed, pin oak, plicate, pogonia, potherb, primula, pussley, quaking, radical, rampion, red elm, red haw, rhubarb, ribwort, romaine, rooibos, rosette, sanicle, sawwort, shaking, shimmer, shortia, sophora, soybean, spinach, stemmer, stubble, succory, talipot, tarweed, tellima, thallus, thistle, tobacco, tong ho, treetop, trefoil, tritoma, vaccina, vanilla, waratah, whisper, whorled, witloof

8 letters:
acanthus, acicular, ageratum, alliaria, alocasia, angelica, angrecum, argemone, ascidian, ash cake, asphodel, averrhoa, barbasco, basswood, bay tree, beefwood, bee balm, blowball, blue fig, blue gum, blue pea, bog star, bok choi, bok choy, bombycid, bonavist, borecole, bow wood, boxberry, brodiaea, buckbean, buckleya, bullrush, bull bay, bur reed, bush pea, calanthe, calisaya, camomile, cannabis, capeweed, caragana, carnauba, catbrier, cecropia, churning, cilantro, cinnabar, clitoria, codiaeum, colewort, colorful, columnea, compound, costmary, cow lily, creashak, cyclamen, day lily, departer, dicentra, digitate, dog bent, eelgrass, elk-wood, emigrant, erigeron, erysimum, escarole, estragon, fan palm, fireweed, flagroot, fleabane, foliaged, fumeroot, fumewort, fumitory, galangal, gaywings, genlisea, gladiola, goodyera, hepatica, herb tea, hernaria, heuchera, holm oak, hoop ash, hydrilla, identity, illicium, incienso, inkberry, involute, iron oak, irritate, jack oak, japonica, kelpwort, keurboom, lacerate, lambkill, leafless, leaf bud, leonurus, licorice, lily pad, livelong, lysiloma, marjoram, markweed, maul oak, may lily, milkweed, moldered, oak tree, oleander, opposite, oxtongue, pachouli, palmetto, panamica, panamiga, pandanus, pea tree, pereskia, phalaris, pilewort, pineweed, pinwheel, pipewort, plantain, playbook, post oak, primrose, psoralea, purslane, quandong, rat race, redberry, reedmace, reflexed, retrorse, ribgrass, richweed, rosaceae, rosemary, rose bay, rose bug, rubiales, rustling, saltwort, samphire, sandarac, scallion, sea cole, sea holm, sea kale, sesbania, shamrock, shinleaf, sidalcea, soapwort, sourwood, sour gum, sprigger, stripper, sweatbox, sycamore, tamarisk, tarragon, teaberry, tea leaf, terminal, thevetia, tiarella, tincture, together, trillium, tuberose, tuckahoe, vaccinia, valerian, verticil, virgilia, wolfbane, woodbine, woodruff, zigadene

9 letters:
acropetal, aglaonema, alfilaria, alfileria, aloe vera, alternate, anaphalis, andromeda, angelique, aphyllous, arecaceae, areca nut, artichoke, basipetal, betel nut, bifoliate, bitternut, blackjack, black ash, black gum, black oak, black rot, black tea, blue sage, book lung, brash oak, broadleaf, brown ash, buckthorn, bullbrier, burmannia, butterbur, campeachy, cape aloe, capitulum, casuarina, cat's-ear, cat thyme, ceraceous, chaffweed, chamomile, clearweed, clianthus, clintonia, cocklebur, colicroot, collector, coltsfoot, conacaste, confusion, corchorus, coriander, cork tree, corn lily, corn tash, courbaril, crow corn, cymbidium, cytokinin, daily dew, dalbergia, dandelion, defoliant, defoliate, dichondra, dita bark, downy haw, dumb cane, edelweiss, eglantine, erythrina, eubryales, exfoliate, fairy cup, feverroot, film fern, flag smut, flame pea, foliation, foliolate, frijolito, fringepod, galingale, gallberry, giant fir, gladiolus, glasswort, glory pea, grand fir, gray sage, greenhood, green tea, gum plant, heartleaf, hoary pea, holm tree, horsebean, horsemint, horsetail, horseweed, hydrastis, ice storm, imbricate, imitation, interleaf, isinglass, jacksonia, joint fir, kniphofia, kudu lily, leaf beet, leaf form, leaf mold, leaf soil, lime tree, liquorice, liverleaf, looseleaf, love tree, manzanita, maplelike, marihuana, marijuana, mayflower, mealberry, medinilla, melastoma, mistletoe, mixed bud, monkeypod, monkshood, montezuma, moosewood, moss pink, myroxylon, narcissus, nipa palm, ochnaceae, old woman, oxytropis, palaquium, palmaceae, palm tree, paloverde, parnassia, patchouli, patchouly, peireskia, pellitory, pimpernel, pine-weed, pineapple, pin grass, pipe vine, polanisia, pond lily, pussytoes, pyrethrum, quillwort, quivering, radicchio, rain tree, rauvolfia, rauwolfia, red-berry, red beech, red kauri, red maple, reed mace, rose-root, rosinweed, runcinate, rust mite, sandberry, sassafras, scalelike, scattered, sea holly, sea wrack, sensitive, serratula, shivering, shriveled, shun giku, silky oak, silk tree, skunkbush, snakehead, snakeroot, snakeweed, soja bean, sour dock, soya bean, spicebush, squawbush, stonecrop, stoneface, stoneroot, straplike, submerged, swamp oak, sweetleaf, tacamahac, tagasaste, tara vine, tipu tree, toadshade, trembling, trifolium, tuba root, twayblade, twinberry, typhaceae, vegetable, verbascum, vernation, waxflower, white ash, white fir, wine palm, wolfsbane, wood lily, wood mint, wood sage

10 letters:
abscission, alder tree, aloe ferox, amatungulu, amber lily, aphis pomi, aspidistra, baby tears, balsamroot, balsam fir, barrenwort, basil balm, basil mint, basket ash, bay laurel, bay willow, bear grass, beetleweed, beet green, belladonna, bendy tree, bitterweed, bitterwood, blue mahoe, bog kalmia, bog laurel, bog myrtle, boston ivy, bottom rot, brachycome, brassavola, brown bent, burn plant, butterwort, canyon oak, cape tulip, caracolito, caricaceae, carpetweed, cat's-tail, cat's feet, cat's foot, centrosema, cheatgrass, chimaphila, china jute, chinquapin, clary sage, colic root, common ivy, common oak, coneflower, coniferous, coral bean, coral bush, coral tree, coral vine, cuban bast, defoliated, defoliator, delphinium, desmanthus, devil tree, dirty bomb, ditch reed, dog fennel, dracontium, dragonhead, dust devil, eleocharis, fairy bell, fen orchid, fen orchis, fetterbush, fever tree, field balm, filmy fern, fingerroot, flame bush, flame tree, foeniculum, foliaceous, fraser fir, frijolillo, frog's-bit, gaillardia, gall-berry, genus arum, genus lens, giant taro, gliricidia, goat's rue, goldenseal, goldfields, goldthread, grass tree, greenbrier, ground ivy, hackmatack, heart-leaf, hedge pink, herbal tea, hollygrape, horse balm, imbricated, indigofera, interleave, jersey elm, judas tree, june grass, kafir corn, koala bear, kudzu vine, larch tree, laurel oak, leaf mould, leaf shape, lemon balm, lemon mint, liliopsida, lymantriid, macrozamia, mangosteen, melon tree, mimosaceae, mint sauce, monkey pod, moor berry, moose-wood, morus alba, moss phlox, motherwort, moth plant, naiadaceae, najadaceae, nasturtium, natal plum, needlebush, needlewood, onion smut, onobrychis, papaw tree, parenchyma, pennyroyal, pepperidge, peppermint, persistent, pig laurel, pin clover, pisang wax, plane tree, pogostemon, poinsettia, poison ash, poison ivy, poison oak, poison pea, potato bug, precocious, prenanthes, proteaceae, quaternate, quercitron, rabbitweed, restharrow, rock maple, sage-green, sage green, sagittaria, salix alba, sand berry, scale moss, scorzonera, screw pine, shadflower, silverbush, silvervine, silverweed, silver fir, silver oak, siris tree, snake-head, snakeberry, snake palm, snake wood, sneezewort, souari nut, spice bush, squaw-bush, star-glory, starflower, star apple, star grass, stone-face, stone-root, stone root, strap fern, strelitzia, suksdorfia, sweetbriar, sweetbrier, sweet balm, sweet fern, sweet flag, sweet gale, sword lily, tailorbird, tanglebush, tape grass, taro plant, texas star, toddy palm, tragopogon, tree heath, tree sloth, true senna, turkey oak, turtlehead, valley oak, velvetleaf, velvetweed, verdolagas, wake-robin, wandflower, wheel tree, whispering, wild senna, willow oak, windflower, wool grass, yellow oak

11 letters:
abelmoschus, acataphasia, acer rubrum, african tea, allium cepa, apple aphid, approximate, arabian tea, art nouveau, atlas cedar, banana tree, beach aster, beggar lice, begonia rex, bittercress, bitter dock, black sumac, bladderwort, bog rhubarb, brittlebush, bushy aster, calandrinia, calico bush, carpenteria, celery pine, chard plant, china grass, chinese yam, chrysomelid, citrus tree, common reed, common sage, coniferales, corn spurry, cos lettuce, cress plant, crystal tea, dagger fern, dead nettle, death camas, defoliation, derris root, desert rose, devil's fig, dicot genus, dicranaceae, downy brome, downy cheat, downy chess, draba verna, dwarf phlox, dwarf sumac, dyer's woad, early morel, english ivy, english oak, fetter bush, finger-root, fire blight, fish fuddle, flameflower, flannelbush, florida yew, fringe cups, garden balm, gebang palm, gentianella, genus catha, genus ceiba, genus cycas, genus hakea, genus linum, genus melia, genus sedum, genus tamus, genus ulmus, genus vigna, genus vitis, genus yucca, geum rivale, glycine max, goat willow, golden club, golden seal, golden star, goose-tansy, goose grass, gracilariid, grass wrack, gray poplar, great maple, green alder, groundberry, halo blight, hamamelites, helleborine, horse-brier, horse brier, ilex glabra, impala lily, indian bean, indian beet, indian pink, indian pipe, indian poke, joshua tree, jupati palm, kaffir corn, leaf-cutter, leaf-roller, leaf beetle, leaf blight, leaf roller, leatherleaf, lemon sumac, lenten rose, leopardbane, linden tree, lion's foot, living rock, longar palm, lowland fir, mescal bean, metasequoia, mock azalia, mock orange, moth orchid, mule's ears, musa ensete, myrica gale, myrtle flag, nageia nagi, native bear, needle-bush, needle-wood, needle bush, needle palm, needle wood, onion plant, opium poppy, oxalidaceae, pachysandra, palm family, papaya tree, parsley haw, pear blight, pepper tree, physostegia, piper betel, poison bush, portia tree, potamogeton, potato vine, prickly ash, prumnopitys, psilotaceae, rabbit-weed, red cabbage, rest-harrow, rex begonia, rhus glabra, rhus vernix, rose beetle, rose chafer, rose family, sage willow, salix nigra, sansevieria, scarlet oak, schizanthus, scotch gale, sedum rosea, senna alata, shad-flower, sheep plant, shellflower, shingle oak, shumard oak, silver-bush, silver-lace, silverberry, silversword, silver lace, silver lime, silver sage, silver vine, sleepy dick, snake plant, sorrel tree, souari tree, spatterdock, stiff aster, stizolobium, stone plant, subtraction, sugar maple, sun pitcher, swamp maple, sweet basil, swiss chard, sword grass, tanbark oak, titi family, torrey tree, tree mallow, tremulously, true laurel, trumpetwood, ulmus rubra, velvet-leaf, velvet bent, vinca minor, waldmeister, water avens, water nymph, wax begonia, welwitschia, white aspen, white beech, white broom, white cedar, whitlowwort, wild celery, wild coffee, wild ginger, wild lupine, wintergreen, winter fern, wolf's bane, wood laurel, xerophyllum, yellow dock, yellow root, yellow spot, yerba santa

12 letters:
absinthe oil, acer argutum, actaea rubra, adapid group, african hemp, african lily, alkali grass, alnus crispa, amabilis fir, american ivy, anigozanthus, aspen poplar, baby's tears, bean trefoil, bear's grape, bella sombra, betel pepper, bibb lettuce, bishop's hat, bitter aloes, bitter cress, black bryony, black locust, black willow, blazing star, bluejack oak, boar thistle, bog asphodel, bog bilberry, bouncing bet, brittle bush, broad-leafed, broad-leaved, bull thistle, butter-print, buttercrunch, cabbage tree, camomile tea, canella-alba, canker brake, cape jasmine, carnauba wax, cassia alata, catha edulis, chamaecrista, checkerberry, chestnut oak, christ plant, christ thorn, common alder, common beech, common camas, common lilac, cone-bearing, copper beech, corn mayweed, corn spurrey, corypha utan, cuckoo bread, curly endive, cypress tree, cypress vine, cyrilliaceae, dawn redwood, desert holly, desert olive, desert plume, dicot family, dilleniaceae, downy poplar, dusty miller, dutch clover, dwarf willow, easter daisy, electroscope, elephant ear, erysiphaceae, european ash, feather palm, fescue grass, fingerflower, flame-flower, flame flower, flame nettle, flannel bush, flannel leaf, fleur-de-lis, garlic chive, gastrolobium, genus achras, genus ananas, genus coleus, genus crambe, genus laurus, genus mucuna, genus nageia, genus oxalis, genus sorbus, gladdon iris, glade mallow, golden larch, golden stars, great millet, green dragon, ground-berry, guernsey elm, head cabbage, head lettuce, healing herb, hedera helix, helmetflower, hit-and-runa, hoary willow, holy thistle, ilex cornuta, indian beech, indian salad, indian senna, indigo plant, ivy geranium, japanese ivy, jewel orchid, joe-pye weed, king begonia, labrador tea, lady's laces, laurel sumac, leaf lettuce, leaf mustard, lepidobotrys, leucadendron, live-forever, living stone, logwood tree, lonchocarpus, marsh mallow, milk thistle, moth mullein, mountain box, mountain tea, mustang mint, naiad family, norway maple, ochna family, oconee bells, orange grass, oregon grape, oregon larch, oregon maple, osage orange, painted leaf, palma christ, palmyra palm, paraguay tea, picea glauca, pitcher sage, poison sumac, poppy mallow, populus alba, prairie dock, prairie star, purple avens, purple beech, pussy willow, quercus alba, quercus ilex, red amaranth, red trillium, rhododendron, rhus laurina, rhus typhina, ribbon grass, ripple-grass, salad burnet, salix caprea, salix lucida, salix repens, salsola kali, salsola soda, sarsaparilla, satyr orchid, scented fern, schnittlaugh, sea eryngium, shall-flower, sheep laurel, sheep sorrel, shell-flower, shell ginger, shiny lyonia, silky willow, silver berry, silver maple, silver storm, slippery elm, slough grass, smooth sumac, spinach beet, star begonia, star jasmine, stinking yew, strophanthus, sundew plant, swamp laurel, swamp poplar, swamp willow, sweet cicely, sweet sultan, tahoka daisy, talipot palm, tea-strainer, tick trefoil, triplochiton, trumpet-wood, trumpet tree, trumpet vine, trumpet weed, tulip orchid, tussock moth, unicorn root, unsubdivided, velvet plant, velvet sumac, verticillate, vincetoxicum, vinegar tree, viscum album, water-shield, water-target, water clover, water violet, wheately elm, white clover, white mallow, white poplar, white spruce, white violet, white willow, white zinnia, wild parsnip, wild quinine, wild spinach, wild vanilla, winter hazel, winter sweet, wormwood oil, yellow dwarf, yucca glauca, zebra orchid

13 letters:
abies fraseri, abies grandis, abies venusta, acer palmatum, adam's needle, administrivia, african tulip, albizia saman, allium porrum, almond willow, american aloe, american lime, araucariaceae, arctium lappa, aster dumosus, baby's breath, ballota nigra, balsam poplar, balsam willow, beggar's lice, benjamin bush, bergamot mint, big-tree plum, big sagebrush, bitter pignut, blackjack oak, black henbane, black salsify, bombycid moth, bouncing bess, box white oak, broccoli raab, broccoli rabe, burmanniaceae, bush hibiscus, butterfly pea, camphor daisy, canada balsam, canada violet, carica papaya, cecropia moth, century plant, chicory plant, chinese holly, cinchona tree, cinnabar moth, cinnamon vine, coleus blumei, common fennel, common sorrel, compass plant, cucumber tree, cytisus albus, dicotyledonae, dicotyledones, dragon's head, dwarf astilbe, egyptian bean, elephant tree, encephalartos, evergreen oak, falcatifolium, false bugbane, family palmae, finger-flower, fish geranium, foxtail grass, french sorrel, garden sorrel, gateleg table, genus aerides, genus banksia, genus eugenia, genus lewisia, genus listera, genus malaxis, genus myrrhis, genus nauclea, genus ormosia, genus phlomis, genus quassia, genus sophora, genus tellima, ginkgo biloba, globe thistle, gnetum gnemon, golden thread, golden willow, great burdock, great ragweed, helmet flower, helmet orchid, hemp agrimony, herb of grace, hog cranberry, horse gentian, hyacinth bean, incense cedar, indian mallow, indian turnip, japanese leaf, joseph's coat, kangaroo bear, kentucky blue, larix decidua, larix russica, laurel willow, levant cotton, listera ovata, lobster plant, lyonia lucida, magnoliopsida, marsh trefoil, meadow fescue, midsummer-men, napaea dioica, nebraska fern, needle-shaped, nuphar advena, ononis repens, painted daisy, palma christi, panax ginseng, papaya family, paradise tree, persian lilac, pigmy talinum, pilea pumilla, plantain lily, pleurothallis, poa pratensis, podocarpaceae, poke milkweed, potato beetle, potato mosaic, prairie smoke, prickly poppy, protea family, quandong tree, quercus robur, quercus rubra, ravenna grass, red baneberry, red bearberry, rhubarb plant, rhus radicans, ringworm bush, rock geranium, rose geranium, rumex acetosa, runaway robin, russian olive, salix candida, salix sericea, salix tristis, sandarac tree, savoy cabbage, scarlet maple, scarlet sumac, schizopetalon, seaside daisy, seaside mahoe, shawnee salad, shining sumac, silkworm moth, silver linden, silver wattle, silver willow, smilax aspera, soybean plant, spear thistle, spinach plant, spiny talinum, spring beauty, spurge laurel, star magnolia, stinking iris, streptocarpus, striped maple, summer savory, swamp hickory, swamp red oak, sweet calamus, syringa emodi, tansy mustard, tassel flower, tilia cordata, tinker's root, transpiration, turmeric root, turnip greens, umbrella arum, umbrella tree, urtica dioica, velvet flower, verticillated, viper's grass, water cabbage, water lettuce, water lobelia, water milfoil, western larch, white thistle, whitlow grass, whorled aster, wild angelica, wild cinnamon, wild geranium, winter savory, yellow locust, yucca baccata

14 letters:
abies amabilis, abies balsamea, acacia catechu, acer japonicum, acer saccharum, acorus calamus, adenium obesum, agave sisalana, allegheny vine, alligator weed, alnus vulgaris, american beech, ananas comosus, apple geranium, artemisia cana, babies'-breath, balm of gilead, bar-room plant, batis maritima, beach wormwood, beaked parsley, begonia dregei, big-leaf maple, bitter hickory, black bindweed, bletia striata, bloodwood tree, boston lettuce, bowstring hemp, boykinia elata, buckwheat tree, calvary clover, cape jessamine, cattail family, celery cabbage, cetonia aurata, chelone glabra, chinese celery, chinese privet, chocolate root, christmas fern, christmas star, christmas tree, cistus ladanum, cleome pinnata, clinton's lily, coast boykinia, coast live oak, common lettuce, common mugwort, common tobacco, compass flower, cranberry bush, cranberry tree, crown imperial, cyperus longus, cyrilla family, devil's tongue, disheartenment, double-spacing, drooping brome, elephant's ear, epigaea repens, eucalyptus oil, european beech, european larch, fagus purpurea, false alumroot, false asphodel, fenusa pusilla, firewheel tree, fragrant sumac, fraxinus nigra, garden lettuce, genus alliaria, genus averrhoa, genus bergenia, genus brodiaea, genus caladium, genus clitoria, genus codiaeum, genus cyclamen, genus dicentra, genus dracaena, genus erigeron, genus erysimum, genus goodyera, genus hernaria, genus heuchera, genus illicium, genus leonurus, genus lysiloma, genus magnolia, genus monstera, genus pereskia, genus phacelia, genus phalaris, genus psoralea, genus sidalcea, genus sphagnum, genus thevetia, genus tiarella, genus virgilia, geum triflorum, golden buttons, hoary plantain, horse chestnut, hound's-tongue, indian lettuce, indian mustard, indian rhubarb, japanese lilac, japanese maple, john's cabbage, kidney begonia, kirkia wilmsii, lactuca sativa, lady's thistle, lamb's-quarter, larix siberica, laurus nobilis, leopard's-bane, lipstick plant, living granite, love-in-a-mist, marsh milkweed, mentha citrata, mountain grape, mountain heath, mountain phlox, mountain sumac, mustard greens, nipa fruticans, order rubiales, oriental poppy, orites excelsa, painted nettle, panama redwood, partridgeberry, phlox subulata, pineapple weed, plantago media, poison dogwood, poison hemlock, poison mercury, poison parsley, prince's-plume, prunus triloba, psilotum nudum, purple boneset, quercitron oak, quercus cerris, quercus incana, quercus laevis, quercus lobata, red silver fir, rhus aromatica, rhus copallina, rhus trilobata, ringworm shrub, rock penstemon, rose of sharon, rough bindweed, rumex scutatus, salix discolor, salix herbacea, salix triandra, salix uva-ursi, sassafras tree, scottish maple, scrub beefwood, sheep's sorrel, shining willow, siberian larch, snow-in-summer, solidago odora, southern beech, spanish dagger, staghorn sumac, stemless daisy, stinking cedar, st john's wort, summer savoury, sundial lupine, sweet woodruff, tamus communis, teucrium marum, tobacco mosaic, toothed spurge, triple-spacing, umbrella plant, umbrella sedge, verpa bohemica, wall pellitory, water crowfoot, water plantain, water shamrock, water starwort, weeping willow, white mulberry, white wax tree, wild cranberry, wild sweet pea, winter savoury, woolly thistle, yacca podocarp, yellow parilla, yellow salsify, yucca gloriosa, zinnia acerosa, zostera marina

15 letters:
abies bracteata, acacia dealbata, adlumia fungosa, agrostis canina, albizia lebbeck, alligator grass, alnus glutinosa, american laurel, asimina triloba, astrantia major, begonia feastii, bird's-eye bush, black archangel, black hellebore, black hollander, black horehound, blessed thistle, boehmeria nivea, bower actinidia, box huckleberry, bristlecone fir, bromus tectorum, broom snakeroot, broom snakeweed, butcher's broom, butterfly plant, california fern, canada moonseed, cannabis sativa, canyon live oak, caoutchouc tree, carlina acaulis, cast-iron plant, chilean jasmine, chinese cabbage, chinese parsley, cirsium vulgare, cliff penstemon, colorado beetle, common foxglove, common moonseed, common purslane, composite order, coriander plant, corypha gebanga, cow-tongue fern, crambe maritima, creeping willow, crown of thorns, dandelion green, daphne laureola, darmera peltata, dolichos lablab, dutchman's-pipe, euphorbia milii, evergreen beech, fagus americana, fagus sylvatica, false pimpernel, family rosaceae, festuca elatior, fetid horehound, flowering hazel, flowering stone, full moon maple, fumaria fungosa, galax urceolata, galium odoratum, genus aglaonema, genus agrimonia, genus ailanthus, genus anaphalis, genus asparagus, genus astrantia, genus burmannia, genus dalbergia, genus digitalis, genus hydrastis, genus jacksonia, genus kniphofia, genus medinilla, genus melastoma, genus myroxylon, genus oxytropis, genus palaquium, genus peireskia, genus polanisia, genus serratula, genus trifolium, genus verbascum, gerea canescens, giant chinkapin, giant coreopsis, globe artichoke, golden clematis, goosefoot maple, grammatophyllum, greater burdock, green hellebore, hamburg parsley, hibiscus elatus, himalayan lilac, hooker's orchid, huckleberry oak, hungarian lilac, iceberg lettuce, indian plantain, italian parsley, jamaica dogwood, japanese privet, jerusalem thorn, lavender cotton, leaf-cutter bee, leafy liverwort, leafy vegetable, lindera benzoin, listera cordata, loddon pondweed, mahonia nervosa, maidenhair tree, malosma laurina, mandevilla laxa, mangosteen tree, medicago sativa, mentha piperita, mentha pulegium, monocotyledonae, monocotyledones, mountain laurel, muzzle velocity, myrrhis odorata, nerium oleander, nutmeg geranium, nyssa sylvatica, ochna serrulata, order eubryales, oxalis violacea, ozark chinkapin, panax schinseng, pedunculate oak, pieris japonica, pineapple plant, pongamia glabra, prunus mexicana, pueraria lobata, purple amaranth, quercus bicolor, quercus falcata, quercus phellos, ringworm cassia, roll of tobacco, romaine lettuce, rosa eglanteria, ruta graveolens, salix pentandra, salix pyrifolia, salix vitellina, santa lucia fir, sedum telephium, sensitive plant, shumard red oak, socotra begonia, sorghum bicolor, spanish bayonet, spoonleaf yucca, stinging nettle, stinking clover, stone life face, striped dogwood, swamp sunflower, swamp white oak, sweet goldenrod, syringa josikea, syringa persica, syringa villosa, taxus floridana, telopea oreades, tilia americana, tilia tomentosa, trachelospermum, trumpet creeper, turpentine weed, typha latifolia, variola vaccina, variola vaccine, vascular bundle, vascular strand, vegetable sheep, veratrum viride, viola pubescens, virginian sumac, virginia mallow, water buttercup, wheat flag smut, white hellebore, white horehound, whorled caraway, yellow oleander, yucca aloifolia, yucca smalliana

16 letters:
acer platanoides, acer saccharinum, actinidia arguta, albizzia lebbeck, alexandria senna, alpine sunflower, alpinia speciosa, alpinia zerumbet, ambrosia trifida, american frogbit, anagyris foetida, anthemis nobilis, araucaria family, arizona sycamore, asperula odorata, aster acuminatus, bastard toadflax, bearberry willow, bedding geranium, birch leaf miner, bird-on-the-wing, black cottonwood, bletilla striata, bloomeria crocea, blue mold fungus, bog whortleberry, bristly oxtongue, burnet bloodwort, butterfly flower, camassia quamash, campsis radicans, carpinus betulus, castor-oil plant, cattleya citrina, cecropia peltata, cedrus atlantica, chicory escarole, chop-suey greens, christmas flower, cistus ladanifer, class liliopsida, cleome serrulata, comandra pallida, common bearberry, common horehound, conium maculatum, corinthian order, crataegus mollis, dalbergia sissoo, derris elliptica, desert sunflower, dioscorea batata, discombobulation, downy bromegrass, dyers' chamomile, easter lily vine, egyptian henbane, encelia farinosa, encyclia citrina, english hawthorn, english plantain, ethiopian banana, evergreen cherry, family arecaceae, family ochnaceae, family palmaceae, family typhaceae, flag smut fungus, florist's willow, flowering almond, friendship plant, fringed polygala, gardenia augusta, gentiana acaulis, gentleman's-cane, genus brachycome, genus centrosema, genus chimaphila, genus crotalaria, genus desmanthus, genus eleocharis, genus eucalyptus, genus foeniculum, genus indigofera, genus maxillaria, genus onobrychis, genus pogostemon, genus prenanthes, genus sagittaria, genus strelitzia, genus tragopogon, giant willowherb, golden chinkapin, gracilariid moth, gramineous plant, green arrow arum, hairy willowherb, hakea leucoptera, hanging geranium, heartleaf arnica, helicteres isora, holly-leaved oak, hyoscyamus niger, identity element, idesia polycarpa, indian chickweed, indian chocolate, isatis tinctoria, jafnea semitosta, kalmia latifolia, kalmia polifolia, lablab purpureus, languas speciosa, lavatera arborea, leaf-cutting bee, lesser celandine, lesser spearwort, lesser twayblade, liparis loeselii, lonicera hirsuta, lupinus perennis, maclura pomifera, magnolia fraseri, marsh bellflower, medicago echinus, mimosa sensitiva, mitchella repens, mitella diphylla, monarda punctata, northern pin oak, northern red oak, nymphaea odorata, oak leaf cluster, ozark chinquapin, para rubber tree, peachleaf willow, picris echioides, plantago rugelii, podocarpus amara, potato tuberworm, pride of bolivia, prince's-feather, princess feather, pyrola americana, pyrola elliptica, quercus borealis, quercus coccinea, quercus stellata, quercus velutina, radyera farragei, raffia taedigera, rattlesnake weed, red cypress pine, ricinus communis, roast beef plant, rugel's plantain, rumex acetosella, ruscus aculeatus, salix amygdalina, salix babylonica, sarracenia minor, satureia montana, satureja montana, sessile trillium, silver sagebrush, silybum marianum, simarouba glauca, siskiyou lewisia, soapwort gentian, sophora japonica, sophora sinensis, southern red oak, stanleya pinnata, stenotus acaulis, stinking gladwyn, summer snowflake, swamp cottonwood, syringa josikaea, syringa vulgaris, tansy leaf aster, tinnevelly senna, trailing arbutus, trifolium repens, trillium sessile, triquetrous leek, ulmus sarniensis, valley white oak, variola vaccinia, viola canadensis, virginia cowslip, virginia creeper, waterwheel plant, western tamarack, white dipladenia, whorled milkweed, yellow chamomile, yellow jacaranda, yellow pond lily, yucca brevifolia

17 letters:
abyssinian banana, acer macrophyllum, achillea ptarmica, aconitum napellus, aeonium haworthii, alexandrian senna, allium triquetrum, american barberry, american basswood, american feverfew, american hornbeam, antennaria dioica, arbutus menziesii, arnica cordifolia, asarum virginicum, aspidistra elatio, atropa belladonna, barnaby's thistle, bastard pimpernel, beefsteak begonia, begonia socotrana, bitternut hickory, blue african lily, blue mountain tea, brassica oleracea, brisbane quandong, broad-leaved dock, california beauty, camellia japonica, camellia sinensis, canadian fleabane, canella winterana, carya cordiformis, cassia acutifolia, castor bean plant, chinese evergreen, cichorium endivia, cichorium intybus, cinchona calisaya, cirsium flodmanii, climbing fumitory, clitoria turnatea, cnicus benedictus, codlins-and-cream, common gum cistus, common watercress, conyza canadensis, crisphead lettuce, deadly nightshade, dwarf gray willow, erigeron glaucous, erythroxylon coca, euphorbia dentata, european hornbeam, fabiana imbricata, fagus grandifolia, false wintergreen, family caricaceae, family mimosaceae, family naiadaceae, family najadaceae, family proteaceae, flat-leaf parsley, fragrant bedstraw, gall of the earth, genus abelmoschus, genus calandrinia, genus hamamelites, genus potamogeton, genus prumnopitys, genus stizolobium, genus xerophyllum, gloxinia spesiosa, golden marguerite, greater spearwort, green apple aphid, grevillea banksii, grevillea robusta, griselinia lucida, gynura aurantiaca, habenaria hookeri, hairy darling pea, hairy honeysuckle, hakea lissosperma, hibiscus farragei, hibiscus syriacus, hieracium venosum, holly-leaf cherry, huntingdon willow, hymenoxys acaulis, identity operator, ipomoea quamoclit, iris foetidissima, kennedia coccinea, king william pine, lemon-scented gum, leonurus cardiaca, lewisia cotyledon, ligustrum lucidum, limnodium spongia, livingstone daisy, lobelia dortmanna, lonicera japonica, lowland white fir, magnolia stellata, marrubium vulgare, mentha longifolia, meryta sinclairii, mexican flameleaf, mitella pentandra, montia cordifolia, nepeta hederaceae, nicotiana tabacum, nigella damascena, nolina microcarpa, oakleaf goosefoot, old-maid's bonnet, order coniferales, oxalis acetosella, papaver orientale, phytolacca dioica, pilea involucrata, pistia stratiotes, pistia stratoites, platanus racemosa, platanus wrightii, podocarpus family, pogostemon cablin, poor man's orchid, populus canescens, prairie cordgrass, prumnopitys amara, prunus ilicifolia, psychogenic fugue, quamoclit pennata, quercus agrifolia, quercus kelloggii, quercus palustris, quercus shumardii, ranunculus lingua, rayless chamomile, reed canary grass, respiratory tract, rhode island bent, sassafras albidum, scentless hayweed, scentless mayweed, senecio cineraria, senna alexandrina, senna marilandica, seriphidium canum, small-leaved lime, smooth-leaved elm, sneezeweed yarrow, solanum jasmoides, sonchus oleraceus, southern magnolia, spergula arvensis, sphacele calycina, spinacia oleracea, star-leaf begonia, sundacarpus amara, swainsona greyana, tall white violet, tanacetum vulgare, torreya taxifolia, tragopogon dubius, tussilago farfara, umbrella magnolia, urocystis cepulae, urocystis tritici, velvet bent grass, viburnum trilobum, violet suksdorfia, virgilia capensis, virginia bluebell, western saxifrage, xerophyllum tenax, yucca carnerosana, yucca filamentosa, zigadenus elegans, zonal pelargonium

18 letters:
actinidia polygama, agathis lanceolata, aglaonema modestum, alstonia scholaris, althea officinalis, american germander, american hellebore, american mistletoe, american spicebush, american white oak, anthemis tinctoria, anthericum torreyi, artemisia vulgaris, asclepias exaltata, aster linarifolius, beefsteak geranium, benzoin odoriferum, black cypress pine, brasenia schreberi, butterhead lettuce, carissa macrocarpa, caryocar nuciferum, cassia marilandica, chenopodium murale, chinese silk plant, cinchona pubescens, cineraria maritima, clematis tangutica, climbing corydalis, climbing hydrangea, common wood sorrel, coreopsis gigantea, coriandrum sativum, crataegus monogyna, cricket-bat willow, cultivated cabbage, cynara cardunculus, cytesis proliferus, dalmatian laburnum, dalmatia pyrethrum, digitalis purpurea, ensete ventricosum, epilobium hirsutum, erianthus ravennae, erigeron divergens, erodium cicutarium, eryngium maritimum, european field elm, evergreen magnolia, family dicranaceae, family oxalidaceae, family psilotaceae, florida strap fern, florist's gloxinia, foeniculum vulgare, fraxinus americana, fraxinus excelsior, gardener's garters, gentiana saponaria, genus anigozanthus, genus chamaecrista, genus cryptocoryne, genus leucadendron, genus lonchocarpus, genus philodendron, genus triplochiton, genus vincetoxicum, geranium maculatum, glycyrrhiza glabra, graminaceous plant, grape-leaf begonia, grass-of-parnassus, greater masterwort, gymnocladus dioica, haastia pulvinaris, hart's-tongue fern, head cabbage plant, helleborus viridis, helxine soleirolia, heuchera americana, hevea brasiliensis, highbush cranberry, hottonia palustris, hymenaea courbaril, hyoscyamus muticus, jack-in-the-pulpit, jacquinia keyensis, japanese andromeda, kentucky bluegrass, kentucy blue grass, larix occidentalis, lily of the valley, lindheimera texana, looking glass tree, loose-leaf lettuce, love-lies-bleeding, madagascar jasmine, magnolia acuminata, magnolia tripetala, magnoliopsid genus, mahonia aquifolium, maple-leaf begonia, melancholy thistle, monarda clinopodia, monotropa uniflora, mouse-ear hawkweed, nephthytis afzelii, nervous exhaustion, oregon holly grape, orontium aquaticum, pacific silver fir, papaver somniferum, parietaria difussa, penstemon rupicola, petasites hybridus, petasites vulgaris, piscidia erythrina, piscidia piscipula, plantago virginica, pointed-leaf maple, poison arrow plant, portulaca oleracea, quercus imbricaria, rampion bellflower, ranunculus ficaria, redstem storksbill, richea dracophylla, rosebay willowherb, royal velvet plant, rumex obtusifolius, salix alba sericea, salix amygdaloides, salvia officinalis, satureia hortensis, satureja hortensis, saxifraga aizoides, scentless camomile, scleranthus annuus, shaving-brush tree, sida hermaphrodita, sinningia speciosa, skeleton fork fern, spotted cranesbill, spreading fleabane, stemless hymenoxys, stinking horehound, subularia aquatica, syringa reticulata, talinum spinescens, templetonia retusa, tetragonia expansa, teucrium canadense, thespesia populnea, thevetia peruviana, thuja occidentalis, townsendia exscapa, ulmus carpinifolia, violet wood sorrel, virgilia oroboides, virginia waterleaf, wood-sorrel family, yellow spiny daisy

19 letters:
acer pennsylvanicum, acer pseudoplatanus, aconitum lycoctonum, adenium multiflorum, albizia julibrissin, amaranthus caudatus, amaranthus cruentus, american arborvitae, american turkey oak, angelica sylvestris, arisaema atrorubens, arisaema dracontium, arisaema triphyllum, aristolochia durior, arrowleaf groundsel, aspalathus linearis, australian chestnut, berberis canadensis, beta vulgaris cicla, broad-leaved montia, bursera microphylla, cabomba caroliniana, california live oak, california sycamore, callitris calcarata, carissa grandiflora, cascade everlasting, cassia augustifolia, castanea ozarkensis, centaurea cineraria, chamaemelum nobilis, chenopodium glaucum, chinese scholartree, cinchona ledgeriana, circis siliquastrum, cirsium helenioides, cirsium lanceolatum, class dicotyledonae, class dicotyledones, class magnoliopsida, clatonia lanceolata, colocasia esculenta, common european ash, comptonia peregrina, confederate jasmine, convallaria majalis, coptis groenlandica, cordyline australis, crataegus apiifolia, cytisus multiflorus, cytisus ramentaceus, dalmatian pyrethrum, descurainia pinnata, dichondra micrantha, downy yellow violet, eau de cologne mint, elaeagnus commutata, elaeocarpus grandis, erigeron canadensis, eucalyptus globulus, eupatorium aya-pana, european turkey oak, evergreen blueberry, evergreen wood fern, family cyrilliaceae, family dilleniaceae, family erysiphaceae, fragrant water lily, fumaria claviculata, fumaria officinalis, garcinia mangostana, genus falcatifolium, glechoma hederaceae, gossypium herbaceum, haplopappus acaulis, heartleaf manzanita, hieracium pilocella, holly-leaved cherry, hyalophora cecropia, ilex paraguariensis, ivy-leaved geranium, japanese tree lilac, jerusalem artichoke, juglans californica, kalmia angustifolia, lamium amplexicaule, ledum groenlandicum, lepechinia calycina, ligustrum japonicum, looking-glass plant, magnoliopsid family, marijuana cigarette, matricaria inodorum, medicago intertexta, melissa officinalis, mertensia virginica, mother-in-law plant, nervous prostration, new zealand spinach, northern dune tansy, old world mistletoe, orthotomus sutorius, oxydendrum arboreum, panama redwood tree, panax pseudoginseng, parnassia fimbriata, parnassia palustris, peach-leaved willow, peltandra virginica, petteria ramentacea, phragmites communis, phyllodoce caerulea, plantago lanceolata, polianthes tuberosa, polygala paucifolia, polygonum orientale, populus balsamifera, populus trichocarpa, potamogeton nodosus, potentilla anserina, purple poppy mallow, purple velvet plant, pyrola rotundifolia, quercus chrysolepis, quercus marilandica, ranunculus flammula, richea pandanifolia, salicornia europaea, salix alba caerulea, scolymus hispanicus, serratula tinctoria, shortia galacifolia, small-leaved linden, smilax rotundifolia, solenostemon blumei, sparmannia africana, spartina pectinmata, stinking nightshade, stone mimicry plant, symplocus tinctoria, talinum aurantiacum, talinum brevifolium, tanacetum coccineum, tanacetum douglasii, tellima grandiflora, tetraneuris acaulis, thevetia neriifolia, three-cornered leek, verbascum blattaria, white cinnamon tree, white spanish broom, yellow star-thistle, yellow sweet clover

20 letters:
abutilon theophrasti, achillea millefolium, agapanthus africanus, albizzia julibrissin, allium schoenoprasum, almond-leaves willow, alnus veridis crispa, alocasia macrorrhiza, artemisia tridentata, atriplex hymenelytra, ayapana triplinervis, borassus flabellifer, bryanthus taxifolius, caladenia cairnsiana, california black oak, california dandelion, california white oak, callimorpha jacobeae, callitris endlicheri, campanula rapunculus, carpinus caroliniana, centaurea gymnocarpa, cerastium tomentosum, chinese scholar tree, cinchona officinalis, cirsium heterophylum, cliftonia monophylla, cordyline terminalis, crataegus marshallii, creeping wintergreen, dactylorhiza fuchsii, eriocaulon aquaticum, eupatorium maculatum, eupatorium purpureum, european black alder, family araucariaceae, family burmanniaceae, family podocarpaceae, fibrovascular bundle, freshwater cordgrass, gardenia jasminoides, gill-over-the-ground, grevillela parallela, habenaria orbiculata, haemanthus coccineus, hamamelis virginiana, helianthus tuberosus, heritiera littoralis, hooded pitcher plant, hydrastis canadensis, hypericum prolificum, hypochaeris radicata, hyssopus officinalis, indigofera tinctoria, japanese honeysuckle, japanese pagoda tree, kentucky coffee tree, leontopodium alpinum, lilies of the valley, magnolia grandiflora, magnolia macrophylla, marsilea quadrifolia, mentzelia livicaulis, molluga verticillata, moreton bay chestnut, nabalus serpentarius, nepal trumpet flower, nettleleaf goosefoot, northern white cedar, oak-leaved goosefoot, painted-leaf begonia, parkinsonia aculeata, parsley-leaved thorn, pelargonium hortorum, pelargonium peltatum, peronospora tabacina, petroselinum crispum, phalaris arundinacea, podocarpus coriaceus, populus heterophylla, poterium sanguisorba, pseudolarix amabilis, quercus vaccinifolia, ranunculus aquatilis, rattlesnake plantain, robinia pseudoacacia, salix alba vitellina, scorzonera hispanica, senecio triangularis, silver-leaved poplar, silver quandong tree, sophora secundiflora, spanish oyster plant, spotted joe-pye weed, stemless golden weed, stenocarpus salignus, stenocarpus sinuatus, suksdorfia violaceae, tephrosia virginiana, toxicodendron vernix, trilisa odoratissima, vaccinium myrsinites, vallisneria spiralis

21 letters:
aldrovanda vesiculosa, arceuthobium pusillum, artemisia stelleriana, asarum shuttleworthii, australian grass tree, begonia erythrophylla, begonia heracleifolia, begonia semperflorens, boykinia occidentalis, brassaia actinophylla, broad-leaved plantain, broad leaved centaury, callirhoe involucrata, callirhoe triangulata, campanula aparinoides, castanea chrysophylla, ceylon bowstring hemp, chinese white cabbage, chrysophyllum cainito, class monocotyledonae, class monocotyledones, common spotted orchid, corydalis claviculata, corypha umbraculifera, cyclamen purpurascens, cyperus alternifolius, dieffenbachia sequine, eucalyptus citriodora, eupatorium cannabinum, euphorbia pulcherrima, evergreen winterberry, flowering wintergreen, gaultheria procumbens, genus grammatophyllum, genus trachelospermum, gutierrezia sarothrae, gypsophila paniculata, helleborus orientalis, heritiera macrophylla, holly-leaves barberry, hydrilla verticillata, hymenoxys grandiflora, hypericum spathulatum, lactuca sativa crispa, large-leaved magnolia, lasthenia chrysostoma, leatherleaf saxifrage, melilotus officinalis, menispermum canadense, mentzelia laevicaulis, menyanthes trifoliata, monardella lanceolata, narrow-leaf penstemon, nasturtium officinale, nut-leaved screw tree, parthenium argentatum, pellitory-of-the-wall, peltiphyllum peltatum, penstemon linarioides, phalaenopsis amabilis, pilosella officinarum, piptadenia macrocarpa, platymiscium pinnatum, podocarpus latifolius, quercus ellipsoidalis, sansevieria zeylanica, saponaria officinalis, schizopetalon walkeri, soleirolia soleirolii, stinking bean trefoil, swainsona grandiflora, talinum augustissimum, telopea speciosissima, triostium perfoliatum, turnip-rooted parsley, virginian witch hazel, welwitschia mirabilis, western balsam poplar, wyethia amplexicaulis, wyethia helianthoides

22 letters:
aeschynanthus radicans, aesculus hippocastanum, amorphophallus rivieri, anthriscus cereifolium, asclepias verticillata, beaumontia grandiflora, brachychiton australis, broad-leaved twayblade, callitris quadrivalvis, centaurea solstitialis, clustered poppy mallow, collinsonia canadensis, colorado potato beetle, commiphora meccanensis, comptonia asplenifolia, cynoglossum officinale, dipladenia boliviensis, elaeagnus augustifolia, enceliopsis nudicaulis, epimedium grandiflorum, falcatifolium taxoides, forestiera neomexicana, fritillaria imperialis, gaylussacia brachycera, gymnopilus ventricosus, haplopappus spinulosus, hypericum gentianoides, mandevilla boliviensis, mother-in-law's tongue, narrow-leaved plantain, pelargonium graveolens, phascolarctos cinereus, phellodendron amurense, potamogeton americanus, prenanthes serpentaria, prickly-seeded spinach, pterocarpus angolensis, pyxidanthera barbulata, red-flowered silky oak, rosmarinus officinalis, saxifraga occidentalis, shrubby st john's wort, stephanotis floribunda, sweet-scented geranium, tetraclinis articulata, thyme-leaved speedwell, toxicodendron radicans, veronica serpyllifolia

23 letters:
acocanthera spectabilis, american cranberry bush, anadenanthera colubrina, arctostaphylos uva-ursi, athrotaxis selaginoides, brassica rapa chinensis, broad-leaved bottletree, buckleya distichophylla, california black walnut, carpenteria californica, chamaecytisus palmensis, chamaedaphne calyculata, chrysanthemum coccineum, coeloglossum bracteatum, earleaved umbrella tree, enterolobium cyclocarpa, epilobium angustifolium, erythroxylon truxiuense, five-point bishop's cap, lactuca sativa capitata, leptarrhena pyrolifolia, lily-of-the-valley tree, listera convallarioides, lithocarpus densiflorus, nettle-leaved goosefoot, old man of the mountain, ornithogalum umbellatum, our lady's mild thistle, phthorimaea operculella, platymiscium trinitatis, pseudobombax ellipticum, sansevieria trifasciata, schefflera actinophylla, seriphidium tridentatum, tetraneuris grandiflora, white-rayed mule's ears, wild lily of the valley, yellow-leaf sickle pine

24 letters:
acocanthera oblongifolia, adam's needle-and-thread, alisma plantago-aquatica, aristolochia macrophylla, astilbe chinensis pumila, brachystegia speciformis, brassica rapa pekinensis, castanopsis chrysophylla, chrysolepis chrysophylla, clustered lady's slipper, cynoglossum virginaticum, cypripedium fasciculatum, drosophyllum lusitanicum, eriodictyon californicum, eupatorium capillifolium, fagus sylvatica purpurea, great-leaved macrophylla, helianthus angustifolius, hydrocharis morsus-ranae, hydrophyllum virginianum, large-flowering magnolia, lithophragma parviflorum, lycopodium alopecuroides, narrow-leaved strap fern, onion yellow-dwarf virus, ozothamnus secundiflorus, parthenium integrifolium, pycnanthemum virginianum, rocky mountain bee plant, round-leaved rein orchid, scentless false camomile, south-african yellowwood, stemless carline thistle, tanacetum ptarmiciflorum

25 letters:
arctostaphylos andersonii, argyroxiphium sandwicense, babylonian weeping willow, crataegus coccinea mollis, dracocephalum parviflorum, haematoxylum campechianum, helichrysum secundiflorum, lactuca sativa longifolia, leptinotarsa decemlineata, macrodactylus subspinosus, matricaria matricarioides, pelargonium odoratissimum, potato yellow-dwarf virus, ruptiliocarpon caracolito, tanacetum cinerariifolium, tetragonia tetragonioides, tripleurospermum inodorum, triplochiton scleroxcylon, yellow mountain saxifrage

26 letters:
amaranthus hypochondriacus, aspalathus cedcarbergensis, brassica oleracea acephala, brassica oleracea capitata, fringed grass of parnassus, haplopappus phyllocephalus, large-leaved cucumber tree, narrow-leaved flame flower, polystichum acrostichoides, santolina chamaecyparissus, syringa amurensis japonica, trautvetteria carolinensis, ulmus campestris wheatleyi

27 letters:
alternanthera philoxeroides, campyloneurum augustifolium, central american strap fern, dorotheanthus bellidiformis, fagus sylvatica atropunicea, parthenocissus quinquefolia, parthenocissus tricuspidata, schizophragma hydrangeoides, trachelospermum jasminoides, ulmus campestris sarniensis

28 letters:
chrysanthemum ptarmiciflorum, coptis trifolia groenlandica, kiss-me-over-the-garden-gate, machaeranthera tanacetifolia, metasequoia glyptostrodoides, rorippa nasturtium-aquaticum, solenostemon scutellarioides, vaccinium uliginosum alpinum

29 letters:
chrysanthemum cinerariifolium, dactylorhiza maculata fuchsii, jerusalem artichoke sunflower, pyrola rotundifolia americana

30 letters:
eucalyptus maculata citriodora, petroselinum crispum tuberosum

33 letters:
petroselinum crispum neapolitanum

34 letters:
amaranthus hybridus erythrostachys, chrysanthemum coronarium spatiosum

35 letters:
amaranthus hybridus hypochondriacus


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