Nabalus albus (22)
Nabalus altissimus (15)
Nabalus hastatus (2)
Nabalus racemosus (21)
Nabalus sagittatus (4)
Nabalus serpentarius (5)
Nabalus trifoliolatus (3)
Nageia nagi (5)
Nageia sp. (1)
Nahuatlea hypoleuca (12)
Najas guadalupensis (5)
Najas marina (8)
Najas minor (2)
Nama aretioides (9)
Nama aretioides var. californica (6)
Nama aretioides var. multiflora (24)
Nama aretioides var. multiflorum (3)
Nama californica (36)
Nama carnosa (12)
Nama demissa (67)
Nama demissa var. covillei (14)
Nama demissa var. demissa (146)
Nama demissum (3)
Nama demissum var. demissum (3)
Nama densa (12)
Nama densa var. densa (27)
Nama densa var. parviflora (2)
Nama densum var. densum (3)
Nama depressa (14)
Nama dichotoma var. dichotoma (11)
Nama havardii (35)
Nama hispida (55)
Nama hispida var. spathulata (4)
Nama hispidum (5)
Nama pusilla (38)
Nama rothrockii (66)
Nama stenocarpa (11)
Nama stevensii (11)
Nama torynophylla (9)
Nananthus aloides (1)
Nananthus margaritifera (1)
Nandina domestica (16)
Nandina sp. (1)
Narcissus albimarginatus (4)
Narcissus bulbocodium (1)
Narcissus cavanillesii (2)
Narcissus jonquilla (6)
Narcissus obsoletus (1)
Narcissus papyraceus (2)
Narcissus poeticus (18)
Narcissus poeticus ssp. radiiflorus (14)
Narcissus pseudonarcissus (37)
Narcissus pseudonarcissus ssp. silvestris (1)
Narcissus serotinus (8)
Narcissus sp. (17)
Narcissus tazetta (6)
Narcissus tazetta ssp. tazetta (1)
Narcissus viridiflorus (6)
Narcissus watieri (1)
Nardus stricta (1)
Narthecium californicum (52)
Narthecium ossifragum (1)
Nassauvia axillaris (19)
Nassauvia gaudichaudii (6)
Nassauvia revoluta (5)
Nassella laevissima (3)
Nassella pulchra (1)
Nassella tenuissima (8)
Nassella viaridula (1)
Nassella viridula (15)
Nasturtium gambelii (24)
Nasturtium officinale (106)
Navarettia leucocephala ssp. bakeri (1)
Navarretia aeroides (12)
Navarretia atractyloides (83)
Navarretia breweri (74)
Navarretia capillaris (70)
Navarretia cotulifolia (29)
Navarretia crystallina (49)
Navarretia divaricata (15)
Navarretia divaricata ssp. divaricata (39)
Navarretia divaricata ssp. vividior (8)
Navarretia eriocephala (4)
Navarretia filicaulis (15)
Navarretia fossalis (21)
Navarretia gowenii (9)
Navarretia hamata (39)
Navarretia hamata ssp. hamata (56)
Navarretia hamata ssp. leptantha (47)
Navarretia hamata ssp. parviloba (34)
Navarretia hamata subsp. parviloba (4)
Navarretia heteranda (1)
Navarretia heterandra (39)
Navarretia heterodoxa (37)
Navarretia intertexta (129)
Navarretia intertexta ssp. intertexta (3)
Navarretia intertexta ssp. propinqua (4)
Navarretia jepsonii (33)
Navarretia leptalea (36)
Navarretia leptalea ssp. bicolor (61)
Navarretia leptalea ssp. leptalea (52)
Navarretia leptalea subsp. bicolor (3)
Navarretia leptalea subsp. leptalea (3)
Navarretia leucocephala (18)
Navarretia leucocephala ssp. bakeri (50)
Navarretia leucocephala ssp. leucocephala (57)
Navarretia leucocephala ssp. minima (26)
Navarretia leucocephala ssp. pauciflora (8)
Navarretia leucocephala ssp. pileantha (4)
Navarretia leucocephala ssp. plieantha (35)
Navarretia linearifolia (6)
Navarretia linearifolia ssp. linearifolia (13)
Navarretia mellita (37)
Navarretia minima (4)
Navarretia mitracarpa (43)
Navarretia miwukensis (21)
Navarretia modocensis (15)
Navarretia myersii (19)
Navarretia myersii ssp. deminuta (5)
Navarretia myersii ssp. myersii (9)
Navarretia nigelliformis ssp. nigelliformis (24)
Navarretia nigelliformis ssp. radians (35)
Navarretia ojaiensis (9)
Navarretia panochensis (20)
Navarretia paradoxiclara (4)
Navarretia paradoxinota (12)
Navarretia peninsularis (11)
Navarretia prolifera (2)
Navarretia prolifera ssp. lutea (60)
Navarretia prolifera ssp. prolifera (39)
Navarretia propinqua (38)
Navarretia prostrata (15)
Navarretia pubescens (99)
Navarretia rosulata (28)
Navarretia saximontana (1)
Navarretia setiloba (70)
Navarretia sinistra (29)
Navarretia sp. (3)
Navarretia squarrosa (73)
Navarretia subuligera (17)
Navarretia tagetina (50)
Navarretia torreyella (26)
Navarretia viscidula (36)
Navarretia vividior (29)
Neckera douglasii (1)
Neltuma alba (6)
Neltuma articulata (2)
Neltuma chilensis (3)
Neltuma denudans (14)
Neltuma glandulosa (9)
Neltuma juliflora (6)
Neltuma laevigata (12)
Neltuma odorata (81)
Neltuma pallida (15)
Neltuma velutina (23)
Nelumbo lutea (18)
Nelumbo nucifera (52)
Nelumbo sp. (1)
Nemacaulis denudata var. denudata (67)
Nemacaulis denudata var. gracilis (8)
Nemacladus bellus (24)
Nemacladus breviflorus (43)
Nemacladus calcaratus (1)
Nemacladus californicus (75)
Nemacladus capillaris (26)

Nemacladus eastwoodiae (23)
Nemacladus glanduliferus (48)
Nemacladus gracilis (4)
Nemacladus interior (35)
Nemacladus inyoensis (43)
Nemacladus longiflorus (21)
Nemacladus matsonii (17)
Nemacladus montanus (47)
Nemacladus morefieldii (27)
Nemacladus orientalis (71)
Nemacladus parikhiae (28)
Nemacladus pinnatifidus (29)
Nemacladus ramosissimus (22)
Nemacladus rigidus (14)
Nemacladus rubescens (76)
Nemacladus secundiflorus (4)
Nemacladus secundiflorus var. robbinsii (25)
Nemacladus secundiflorus var. secundiflorus (9)
Nemacladus sigmoideus (141)
Nemacladus sp. (5)
Nemacladus tenuis (2)
Nemacladus tenuis var. aliformis (70)
Nemacladus tenuis var. tenuis (18)
Nemacladus twisselmannii var. botanywomaniae (17)
Nemacladus twisselmannii var. twisselmannii (14)
Nemacldus interior (1)
Nemastylis geminiflora (4)
Nematanthus sp. (1)
Nematostylis anthophylla (2)
Nemesia cheiranthus (1)
Nemesia fruticans (1)
Nemesia leipoldtii (1)
Nemesia sp. (20)
Nemesia strumosa (4)
Nemesia versicolor (3)
Nemophila breviflora (3)
Nemophila heterophylla (114)
Nemophila humifusa (5)
Nemophila maculata (124)
Nemophila menziesii (123)
Nemophila menziesii var. atomara (1)
Nemophila menziesii var. atomaria (51)
Nemophila menziesii var. automaria (3)
Nemophila menziesii var. integrifolia (40)
Nemophila menziesii var. menziesii (149)
Nemophila parviflora (19)
Nemophila parviflora var. austiniae (10)
Nemophila parviflora var. parviflora (47)
Nemophila parviflora var. quercifolia (17)
Nemophila pedunculata (84)
Nemophila phacelioides (2)
Nemophila pulchella (15)
Nemophila pulchella var. fremontii (10)
Nemophila pulchella var. pulchella (9)
Nemophila sp. (6)
Nemophila spatulata (80)
Nemophilia menziesii var. atomaria (1)
Neobuxbaumia popylopha (2)
Neofinetia falcata var. momohime (5)
Neofinetia falcata var. nishidaon-yako (2)
Neofinetia falcata var. shutennoki (4)
Neofinetia falcata var. tama-kongou (3)
Neogaerrhinum filipes (2)
Neogoniolithon frutescens (2)
Neohenricia sibbetii (1)
Neoholmgrenia andina (3)
Neokochia americana (11)
Neokochia californica (19)
Neolitsea sericea (7)
Neomarica caerulea (6)
Neomarica sabinei (6)
Neomeris annulata (7)
Neomeris vanbosseae (12)
Neonauclea forsteri (4)
Neopanax arboreus (1)
Neoraimondia arequipensis (1)
Neoraimondia herzogiana (5)
Neoregelia carolinae (1)
Neoregelia tristis (2)
Neorhodomela larix (1)
Neosiphonia apiculata (31)
Neosiphonia ferulacea (6)
Neosiphonia sphaerocarpa (2)
Neosiphonia tongatensis (21)
Neostapfia colusana (60)
Neotinea lactea (2)
Neotinea maculata (2)
Neotinea tridentata (31)
Neotinea ustulata (46)
Neotinea x-dietrichiana (3)
Neotinea xdietrichiana (2)
Neottia banksiana (25)
Neottia convallarioides (8)
Neottia cordata (43)
Neottia nidus-avis (21)
Neottia ovata (24)
Neoveitchia storckii (2)
Nepenthes alata (2)
Nepenthes albomarginata (2)
Nepenthes ampullaria (10)
Nepenthes aristolochioides (2)
Nepenthes bellii (1)
Nepenthes bicalcarata (6)
Nepenthes burbidgeae (1)
Nepenthes campanulata (1)
Nepenthes clipeata (2)
Nepenthes copelandii (1)
Nepenthes ephippiata (2)
Nepenthes eymae (2)
Nepenthes fusca (1)
Nepenthes gracilis (1)
Nepenthes gymnamphora (4)
Nepenthes hamata (2)
Nepenthes hispida (1)
Nepenthes intermedia (1)
Nepenthes kampotiana x ventrata (1)
Nepenthes khasiana (1)
Nepenthes lowii (1)
Nepenthes madagascariensis (12)
Nepenthes maxima (4)
Nepenthes merrilliana (1)
Nepenthes mikei (2)
Nepenthes mirabilis (1)
Nepenthes pervillei (1)
Nepenthes platychila (4)
Nepenthes rafflesiana (3)
Nepenthes rajah (3)
Nepenthes ramispina (1)
Nepenthes robcantleyi (1)
Nepenthes sanguinea (4)
Nepenthes sp. (15)
Nepenthes spathulata (3)
Nepenthes stenophylla (1)
Nepenthes talangensis x maxima (2)
Nepenthes tentaculata (2)
Nepenthes tobaica (2)
Nepenthes truncata (3)
Nepenthes veitchii (2)
Nepenthes ventricosa (8)
Nepenthes ventricosa x lowii (1)
Nepeta cataria (25)
Nepeta curviflora (1)
Nepeta cyanea ssp. cyanea (1)
Nepeta racemosa (5)
Nepeta racemosa ssp. racemosa (1)
Nepeta tuberosa (6)
Nepeta x faassenii (7)
Nepeta x fassenii (5)
Nephelium lappaceum (13)
Nephrolepis (1)
Nephrolepis biserrata (1)
Nephrolepis biserrata 'Furcans' (1)
Nephrolepis brownii (4)
Nephrolepis cordifolia (8)
Nephrolepis exaltata (1)
Nephrolepis hirsutula (21)
Nephrolepis sp. (2)
Nephrophyllidium crista-galli (6)
Nepsera aquatica (2)
Neptunia aquatica (1)
Neptunia plena (6)
Neptunia pubescens (6)
Nereocystis leutkeana (1)
Nereocystis luetkeana (8)
Nerine gracilis (7)

Nerine sarniensis (1)
Nerine undulata (5)
Nerisyrenia camporum (30)
Nerisyrenia hypercorax (13)
Nerisyrenia linearifolia (15)
Nerium oleander (68)
Nertera granadensis (5)
Nervilia concolor (3)
Nestegis cunninghami (1)
Nestotus lanuginosus (1)
Nestotus stenophyllus (21)
Neustanthus phaseoloides (1)
Neviusia alabamensis (2)
Neviusia cliftonii (66)
Newtonia hildebrandtii (12)
Nicandra physalodes (21)
Nicolletia edwardsii (15)
Nicolletia occidentalis (98)
Nicolletia trifida (6)
Nicoteba betonica (7)
Nicotiana acuminata (4)
Nicotiana acuminata var. multiflora (30)
Nicotiana alata (6)
Nicotiana attenuata (83)
Nicotiana clevelandii (9)
Nicotiana glauca (78)
Nicotiana langsdorfii (2)
Nicotiana mutabilis (4)
Nicotiana obtusifolia (138)
Nicotiana obtusifolia var. obtusifolia (4)
Nicotiana otophora (4)
Nicotiana quadrivalvis (46)
Nicotiana rustica (1)
Nicotiana solanifolia (5)
Nicotiana sylvestris (6)
Nicotiana tabacum (7)
Nicotiana tomentosa (3)
Nicotiana tomentosa var. leguiana (5)
Nidema boothii (1)
Niebla dactylifera (2)
Nierembergia linariifolia var. linariifolia (3)
Nierembergia repens (4)
Nigela sativa (4)
Nigella bucharica (1)
Nigella damascena (38)
Nigella hispanica (11)
Niphidium carinatum (1)
Niphidium crassifloium (1)
Niphidium crassifolium (3)
Nipponanthemum nipponicum (7)
Nitophyllum adhaerens (29)
Nitophyllum divaricatum (1)
Nitophyllum galapagense (1)
Nitrophila mohavensis (20)
Nitrophila occidentalis (30)
Noccaea fendleri (27)
Noccaea fendleri ssp. californica (32)
Noccaea fendleri ssp. glauca (41)
Noccaea fendleri ssp. siskiyouense (17)
Noccaea fendleri ssp. siskiyouensis (5)
Noccaea minima (6)
Noccaea montana (8)
Noccaea praecox (7)
Noccaea rotundifolia (7)
Nolana galapagensis (1)
Nolana humifusa (3)
Nolana paradoxa (10)
Nolana peruviana (3)
Nolana rupicola (10)
Nolina bigelovii (20)
Nolina cismontana (24)
Nolina erumpens (18)
Nolina greenei (2)
Nolina interrata (17)
Nolina matapensis (2)
Nolina microcarpa (7)
Nolina nelsoni (1)
Nolina palmerii (1)
Nolina parryi (124)
Nolina texana (1)
Norantea guianensis (5)
Normanbya normanbyi (1)
Noronhia emarginata (1)
Nostoc commune (4)
Nostoc parmelioides (5)
Nostoc sp. (2)
Notelaea sandwicensis (5)
Nothocalais alpestris (6)
Nothocalais sp. (1)
Nothocalais troximoides (10)
Nothocestrum breviflorum (14)
Nothochelone nemorosa (31)
Nothofagus alpina (2)
Nothofagus betuloides (1)
Nothofagus cunninghamii (1)
Nothofagus dombeyi (18)
Nothofagus dombeyi ssp. glauca (1)
Nothofagus fusca (1)
Nothofagus glauca (17)
Nothofagus macrocarpa (8)
Nothofagus moorei (2)
Nothofagus obliqua (3)
Nothofagus obliqua var. obliqua (2)
Nothofagus pumilio (8)
Nothofagus solandri var. solandri (2)
Notholaena brevistipes (1)
Notholaena californica (1)
Notholaena californica ssp. californica (12)
Notholaena sp (1)
Notholaena standleyi (9)
Notholithocarpus densiflorus (143)
Notholithocarpus densiflorus var. densiflorus (11)
Notholithocarpus densiflorus var. echinoides (27)
Nothoperanema rubiginosa (9)
Nothoscordum arenarium (1)
Nothoscordum bivalve (5)
Nothoscordum bivalve var. bivalve (3)
Nothoscordum gracile (18)
Noticastrum marginatum (2)
Notobasis syriaca (1)
Notocactus concinnus var. gerbalitoensis (6)
Notocactus leningshausii (1)
Notocactus schlosseri (2)
Notocactus scopa var. murielii (1)
Notocactus scopa var. rubra (2)
Notocactus turecekianus (1)
Notocactus warasii (1)
Nuphar advena (6)
Nuphar japonica (2)
Nuphar lutea (4)
Nuphar microphylla (2)
Nuphar polysepala (124)
Nuphar sp. (4)
Nuphar variegata (6)
Nuttallanthus canadensis (21)
Nuttallanthus texanus (91)
Nuxia congesta (6)
Nuxia floribunda (33)
Nuytsia floribunda (1)
Nyctaginia capitata (31)
Nymania capensis (3)
Nymphaea alba (8)
Nymphaea ampla (10)
Nymphaea gigantea (1)
Nymphaea lotus (3)
Nymphaea mexicana (13)
Nymphaea nouchali (12)
Nymphaea nouchali var. caerulea (6)
Nymphaea odorata (39)
Nymphaea odorata ssp. odorata (48)
Nymphaea odorata ssp. tuberosa (5)
Nymphaea sp. (47)
Nymphaea x daubenyana (1)
Nymphoides aurantiaca (1)
Nymphoides cordata (2)
Nymphoides cristata (1)
Nymphoides geminata (4)
Nymphoides hydrophyllum (4)
Nymphoides indica (7)
Nymphoides peltata (15)
Nyssa aquatica (1)
Nyssa sinensis (7)
Nyssa sylvatica (12)