Nabalus altissimus (7)
Nabalus sagittatus (4)
Nabalus serpentarius (5)
Nabalus trifoliolatus (3)
Nageia sp. (1)
Nageliella angustifolia (2)
Nahuatlea hypoleuca (12)
Najas guadalupensis (5)
Najas marina (8)
Najas minor (2)
Nama aretioides (9)
Nama aretioides var. californica (6)
Nama aretioides var. multiflora (7)
Nama aretioides var. multiflorum (20)
Nama californica (26)
Nama californicum (10)
Nama carnosa (12)
Nama demissa (12)
Nama demissa var. covillei (2)
Nama demissa var. demissa (61)
Nama demissum (53)
Nama demissum var. covillei (12)
Nama demissum var. demissum (88)
Nama densa (1)
Nama densa var. densa (15)
Nama densum (11)
Nama densum var. densum (15)
Nama densum var. parviflorum (2)
Nama depressum (11)
Nama dichotomum var. dichotomum (11)
Nama havardii (35)
Nama hispida (49)
Nama hispidum (11)
Nama hispidum var. spathulatum (4)
Nama pusilla (38)
Nama rothrockii (66)
Nama stenocarpa (6)
Nama stenocarpum (5)
Nama stevensii (4)
Nama stevensii var. gypsicola (7)
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 elegans (1)
Narcissus jonquilla (6)
Narcissus papyraceus (2)
Narcissus poeticus (18)
Narcissus poeticus ssp. radiiflorus (7)
Narcissus pseudonarcissus (29)
Narcissus pseudonarcissus ssp. silvestris (1)
Narcissus radiiflorus (7)
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 (51)
Narthecium ossifragum (1)
Nassauvia axillaris (19)
Nassauvia gaudichaudii (6)
Nassauvia revoluta (5)
Nassella laevissima (3)
Nassella pulchra (3)
Nassella tenuissima (8)
Nassella viaridula (1)
Nastanthus agglomeratus (2)
Nastanthus spathulatus (4)
Nasturtium gambelii (21)
Nasturtium officinale (90)
Navarettia leucocephala ssp. bakeri (1)
Navarretia aeroides (12)
Navarretia atractyloides (83)
Navarretia breweri (65)
Navarretia capillaris (68)
Navarretia cotulifolia (27)
Navarretia crystallina (49)
Navarretia divaricata (14)
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 (99)
Navarretia intertexta ssp. intertexta (17)
Navarretia intertexta ssp. propinqua (20)
Navarretia jepsonii (33)
Navarretia leptalea (36)
Navarretia leptalea ssp. bicolor (61)
Navarretia leptalea ssp. leptalea (52)
Navarretia leucocephala (18)
Navarretia leucocephala ssp. bakeri (50)
Navarretia leucocephala ssp. leucocephala (57)
Navarretia leucocephala ssp. minima (30)
Navarretia leucocephala ssp. pauciflora (8)
Navarretia leucocephala ssp. pileantha (4)
Navarretia leucocephala ssp. plieantha (34)
Navarretia linearifolia (6)
Navarretia linearifolia ssp. linearifolia (13)
Navarretia mellita (37)
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 (38)
Navarretia propinqua (22)
Navarretia prostrata (15)
Navarretia pubescens (97)
Navarretia rosulata (28)
Navarretia saximontana (1)
Navarretia setiloba (70)
Navarretia sinistra (29)
Navarretia sp. (3)
Navarretia squarrosa (69)
Navarretia subuligera (17)
Navarretia tagetina (50)
Navarretia torreyella (26)
Navarretia viscidula (36)
Navarretia vividior (29)
Neckera douglasii (1)
Nectandra salicifolia (2)
Neltuma glandulosa (1)
Neltuma odorata (3)
Nelumbo lutea (18)
Nelumbo nucifera (49)
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 (16)
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)
Nemopanthus mucronatus (8)
Nemophila breviflora (3)
Nemophila heterophylla (114)
Nemophila humifusa (5)
Nemophila maculata (124)
Nemophila menziesii (118)
Nemophila menziesii var. atomara (1)
Nemophila menziesii var. atomaria (50)
Nemophila menziesii var. automaria (3)
Nemophila menziesii var. integrifolia (40)
Nemophila menziesii var. menziesii (149)
Nemophila parviflora (18)
Nemophila parviflora var. austiniae (10)
Nemophila parviflora var. parviflora (47)
Nemophila parviflora var. quercifolia (17)
Nemophila pedunculata (82)
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)
Neobakeria angustifolia (1)
Neobuxbaumia polylopha (1)
Neobuxbaumia popylopha (2)
Neobuxbaumia tetetzo (1)
Neocheiropteris ensata (2)
Neochilenia jussieui (3)
Neochilenia napina (1)
Neochilenia occulta (1)
Neochilenia odieri (2)
Neodypsis decaryi (4)
Neofinetia falcata var. momohime (5)
Neofinetia falcata var. nishidaon-yako (2)
Neofinetia falcata var. shutennoki (4)
Neofinetia falcata var. tama-kongou (3)
Neogoniolithon frutescens (2)
Neohenricia sibbetii (1)
Neoholmgrenia andina (3)
Neolehmannia porpax (3)
Neolitsea sericea (7)
Neolloydia conoidea (8)
Neolloydia schmiedickeana var. klinkeriana (1)
Neomarica caerulea (6)
Neomarica candida (1)
Neomarica gracilis (2)
Neomarica longifolia (1)
Neomarica sabinei (6)
Neomeris annulata (7)
Neomeris vanbosseae (12)
Neonauclea forsteri (4)
Neonesomia palmeri (8)
Neoporteria gerocephala (1)
Neoporteria multicolor (3)
Neoporteria nidus (4)
Neoporteria villosa (2)
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 maculata (2)
Neotinea tridentata (5)
Neotinea tridentata ssp. tridentata (5)
Neotinea ustulata (8)
Neotinea x-dietrichiana (3)
Neotinea xdietrichiana (2)
Neottia nidus-avis (21)
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 kubanica (1)
Nepeta mussinii (1)
Nepeta racemosa (5)
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 (2)
Nephrolepis cordifolia (8)
Nephrolepis exaltata (1)
Nephrolepis hirsutula (21)
Nephrolepis multiflora (2)
Nephrolepis sp. (2)
Nephrophyllidium crista-galli (3)
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 (67)
Nertera granadensis (5)
Nervilia aragoana (3)

Nestegis cunninghami (1)
Nestegis sandwicensis (5)
Nestotus stenophyllus (7)
Neviusia alabamensis (2)
Neviusia cliftonii (66)
Newtonia hildebrandtii (12)
Nicandra physalodes (16)
Nicolaia elatior (1)
Nicolletia edwardsii (15)
Nicolletia occidentalis (98)
Nicolletia trifida (6)
Nicotiana acuminata (4)
Nicotiana acuminata var. multiflora (30)
Nicotiana alata (6)
Nicotiana attenuata (80)
Nicotiana clevelandii (9)
Nicotiana glauca (78)
Nicotiana langsdorfii (2)
Nicotiana mutabilis (4)
Nicotiana obtusifolia (132)
Nicotiana obtusifolia var. obtusifolia (2)
Nicotiana otophora (4)
Nicotiana quadrivalvis (46)
Nicotiana rustica (1)
Nicotiana solanifolia (5)
Nicotiana sylvestris (3)
Nicotiana tabacum (7)
Nicotiana tomentosa (3)
Nicotiana tomentosa var. leguiana (5)
Nicotiana trigonophylla (8)
Nidema boothii (1)
Niebla dactylifera (2)
Nierembergia hippomanica (2)
Nierembergia linariifolia var. linariifolia (1)
Nierembergia repens (4)
Nigela sativa (4)
Nigella bucharica (1)
Nigella damascena (31)
Nigella hispanica (7)
Nigritella bicolor (23)
Nigritella miniata (16)
Nigritella nigra (5)
Nigritella rhellicani (16)
Nigritella rubra (4)
Nigritella widderi (14)
Niphidium carinatum (1)
Niphidium crassifloium (1)
Niphidium crassifolium (3)
Nipponanthemum nipponicum (7)
Nitophyllum adhaerens (29)
Nitophyllum divaricatum (1)
Nitophyllum galapagense (1)
Nitrophila mohavensis (17)
Nitrophila occidentalis (30)
Noccaea fendleri (16)
Noccaea fendleri ssp. californica (32)
Noccaea fendleri ssp. glauca (41)
Noccaea fendleri ssp. siskiyouense (17)
Noccaea fendleri ssp. siskiyouensis (5)
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 (119)
Nolina texana (1)
Nonea cesatiana (2)
Norantea guianensis (5)
Normanbya normanbyi (1)
Noronhia emarginata (1)
Nostoc commune (4)
Nostoc parmelioides (5)
Nostoc sp. (2)
Nothocalais alpestris (45)
Nothocalais cuspidata (10)
Nothocalais nigrescens (11)
Nothocalais sp. (1)
Nothocalais troximoides (18)
Nothocestrum breviflorum (14)
Nothochelone nemorosa (25)
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 (3)
Nothofagus moorei (2)
Nothofagus obliqua (3)
Nothofagus obliqua var. macrocarpa (5)
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 copelandii (1)
Notholaena marantae (1)
Notholaena sp (1)
Notholaena standleyi (9)
Notholithocarpus densiflorus (130)
Notholithocarpus densiflorus var. densiflorus (11)
Notholithocarpus densiflorus var. echinoides (24)
Nothoperanema rubiginosa (9)
Nothoscordum arenarium (1)
Nothoscordum bivalve (5)
Nothoscordum gracile (18)
Nothoscordum texanum (3)
Noticastrum marginatum (2)
Notobasis syriaca (1)
Notocactus buiningii (6)
Notocactus claviceps (1)
Notocactus concinnus var. gerbalitoensis (6)
Notocactus crassigibbus (1)
Notocactus graessneri (2)
Notocactus gutierrezii (3)
Notocactus haselbergii (3)
Notocactus leningshausii (1)
Notocactus magnificus (2)
Notocactus rudibuenekeri (1)
Notocactus schlosseri (2)
Notocactus scopa (7)
Notocactus scopa var. murielii (1)
Notocactus scopa var. rubra (2)
Notocactus turecekianus (1)
Notocactus uebelmannianus (11)
Notocactus warasii (1)
Nuphar advena (6)
Nuphar japonica (2)
Nuphar lutea (4)
Nuphar lutea ssp. polysepala (4)
Nuphar microphylla (2)
Nuphar polysepala (101)
Nuphar sp. (4)
Nuphar variegata (6)
Nuttallanthus canadensis (21)
Nuttallanthus texanus (88)
Nuxia congesta (6)
Nuxia floribunda (33)
Nuytsia floribunda (1)
Nyctaginia capitata (31)
Nymania capensis (3)
Nymphaea alba (6)
Nymphaea ampla (10)
Nymphaea caerulea (6)
Nymphaea gigantea (1)
Nymphaea lotus (3)
Nymphaea mexicana (13)
Nymphaea nouchali (12)
Nymphaea odorata (39)
Nymphaea odorata ssp. odorata (1)
Nymphaea odorata ssp. tuberosa (5)
Nymphaea sp. (46)
Nymphaea x daubenyana (1)
Nymphoides cordata (1)
Nymphoides cristata (4)
Nymphoides geminata (4)
Nymphoides indica (5)
Nymphoides peltata (13)
Nyssa aquatica (1)
Nyssa sinensis (7)
Nyssa sylvatica (12)