Last updated October 1, 2009
| Name | Family | Nativity |
| Nageia nagi | Podocarpaceae | Japan, Japan(Ryukyu Is.) |
| Nandina domestica | Berberidaceae | India to E Asia |
| Nelumbo cv. Alba Grandiflora | Nelumbonaceae | |
| Nelumbo cv. Alba Striata | Nelumbonaceae | |
| Nelumbo cv. Maggie Bell Slocum | Nelumbonaceae | |
| Nelumbo cv. Mrs. Perry D. Slocum | Nelumbonaceae | |
| Nelumbo cv. Pekinensis Rubra | Nelumbonaceae | |
| Nelumbo cv. Rosea Plena | Nelumbonaceae | |
| Nelumbo cv. Russian Red | Nelumbonaceae | |
| Nelumbo lutea | Nelumbonaceae | E North America |
| Nelumbo nucifera | Nelumbonaceae | S Asia to Australia |
| Nelumbo nucifera cv. Gregg Gibson | Nelumbonaceae | |
| Nelumbo nucifera cv. Momo Botan | Nelumbonaceae | |
| Nelumbo nucifera cv. Mrs. Perry D. Slocum | Nelumbonaceae | |
| Nematanthus cv. Christmas Holly | Gesneriaceae | |
| Nematanthus hirtus cv. Tropicana | Gesneriaceae | |
| Neobuxbaumia euphorbioides | Cactaceae | Mexico |
| Neobuxbaumia macrocephala | Cactaceae | Mexico |
| Neobuxbaumia polylopha | Cactaceae | Mexico |
| Neomarica caerulea | Iridaceae | Brazil |
| Neomarica gracilis | Iridaceae | Brazil |
| Neoraimondia herzogiana | Cactaceae | Bolivia |
| Neoregelia ampullacea | Bromeliaceae | Brazil |
| Neoregelia ampullacea cv. Zebrina | Bromeliaceae | |
| Neoregelia burle-marxii | Bromeliaceae | Brazil |
| Neoregelia carcharodon | Bromeliaceae | Brazil |
| Neoregelia carolinae | Bromeliaceae | Brazil |
| Neoregelia carolinae cv. Meyendorffii | Bromeliaceae | |
| Neoregelia carolinae cv. Princeps | Bromeliaceae | |
| Neoregelia carolinae f. tricolor | Bromeliaceae | Brazil |
| Neoregelia compacta x olens cv. 696 | Bromeliaceae | Brazil |
| Neoregelia concentrica cv. Plutonis | Bromeliaceae | |
| Neoregelia concentrica hyb. | Bromeliaceae | |
| Neoregelia cruenta | Bromeliaceae | Brazil |
| Neoregelia cv. Carousel | Bromeliaceae | |
| Neoregelia cv. Dr. Oeser | Bromeliaceae | |
| Neoregelia cv. Fireball | Bromeliaceae | |
| Neoregelia cv. Macromarcon | Bromeliaceae | |
| Neoregelia cv. Marcon | Bromeliaceae | |
| Neoregelia cv. Oh! No! | Bromeliaceae | |
| Neoregelia cv. Pepper | Bromeliaceae | |
| Neoregelia cv. Perfection | Bromeliaceae | |
| Neoregelia cv. Polka Dot | Bromeliaceae | |
| Neoregelia cv. Royal Robe | Bromeliaceae | |
| Neoregelia cv. Strawberry | Bromeliaceae | |
| Neoregelia cv. Takemura Grande | Bromeliaceae | |
| Neoregelia cv. Verry Cherry | Bromeliaceae | |
| Neoregelia cv. Voodoo | Bromeliaceae | |
| Neoregelia leprosa | Bromeliaceae | Brazil |
| Neoregelia lilliputiana | Bromeliaceae | Brazil |
| Neoregelia marmorata | Bromeliaceae | Brazil |
| Neoregelia marmorata hybrid | Bromeliaceae | Brazil |
| Neoregelia pauciflora | Bromeliaceae | Brazil |
| Neoregelia punctatissima | Bromeliaceae | Brazil |
| Neoregelia sarmentosa | Bromeliaceae | Brazil |
| Neoregelia sarmentosa cv. Dexter’s Pride | Bromeliaceae | |
| Neoregelia sarmentosa v. chlorosticta | Bromeliaceae | Brazil |
| Neoregelia spectabilis | Bromeliaceae | Brazil |
| Neoregelia tigrina | Bromeliaceae | Brazil |
| Neotanthus cv. Firefoam | Bromeliaceae | |
| Nepeta x faassenii | Lamiaceae | Garden Origin |
| Nepeta x faassenii cv. Six Hills Giant | Lamiaceae | |
| Nephrolepis cordifolia cv. Pompom | Nephrolepidiaceae | |
| Nephrolepis cv. Compacta | Oleandraceae | |
| Nephrolepis exaltata | Oleandraceae | Tropics |
| Nephrolepis exaltata | Oleandraceae | Worldwide |
| Nephrolepis exaltata cv. Tessellata | Oleandraceae | |
| Nerium oleander | Apocynaceae | Mediterranean |
| Nicotiana sp. | Solanaceae | |
| Nidularium cv. Francois Spae | Bromeliaceae | |
| Nidularium cv. Souvenir de Casmir Morobe | Bromeliaceae | |
| Nidularium hybrid | Bromeliaceae | |
| Nidularium innocentii v. innocentii | Bromeliaceae | |
| Nidularium innocentii v. lineatum | Bromeliaceae | Brazil |
| Nidularium longiflorum | Bromeliaceae | |
| Nidularium rutilans | Bromeliaceae | Brazil |
| Nidularium sp. | Bromeliaceae | |
| Niphidium crassifolium | Polypodiaceae | Mexico to South America |
| Niphidium crassifolium | Polypodiaceae | Tropical America |
| Nolina aff. longifolia | Nolinaceae | |
| Nolina cf. beldingii | Nolinaceae | Baja California |
| Nolina matapensis | Nolinaceae | Mexico(Sonora) |
| Nolina nelsoni | Nolinaceae | Mexico(Tamaulipas) |
| Normanbya normanbyi | Arecaceae | NE Australia |
| Notocactus claviceps | Cactaceae | Brazil |
| Notocactus horstii | Cactaceae | Brazil |
| Notocactus leninghausii | Cactaceae | Brazil |
| Notocactus leninghausii x claviceps | Cactaceae | |
| Notocactus linkii | Cactaceae | Brazil |
| Notocactus magnificus | Cactaceae | Brazil |
| Notocactus megapotamicus | Cactaceae | South America |
| Notocactus ottonis | Cactaceae | South America |
| Notocactus schlosseri | Cactaceae | |
| Notocactus sp. | Cactaceae | |
| Nuphar sagittifolium | Nymphaeaceae | Florida, Mexico |
| Nymania capensis | Meliaceae | South Africa |
| Nymphaea candida | Nymphaeaceae | N Eurasia |
| Nymphaea cv. Albert Greenberg | Nymphaeaceae | |
| Nymphaea cv. Antares | Nymphaeaceae | |
| Nymphaea cv. Arc-en-Ciel | Nymphaeaceae | |
| Nymphaea cv. Attraction | Nymphaeaceae | |
| Nymphaea cv. Barbara Dobbins | Nymphaeaceae | |
| Nymphaea cv. Berit Strawn | Nymphaeaceae | |
| Nymphaea cv. Burgundy Princess | Nymphaeaceae | |
| Nymphaea cv. Charles de Meurville | Nymphaeaceae | |
| Nymphaea cv. Chromatella | Nymphaeaceae | |
| Nymphaea cv. Clyde Ikins | Nymphaeaceae | |
| Nymphaea cv. Comanche | Nymphaeaceae | |
| Nymphaea cv. Darwin | Nymphaeaceae | |
| Nymphaea cv. Eldorado | Nymphaeaceae | |
| Nymphaea cv. Emily Grant Hutchings | Nymphaeaceae | |
| Nymphaea cv. Gladstoniana | Nymphaeaceae | |
| Nymphaea cv. Gloire du Temple sur Lot | Nymphaeaceae | |
| Nymphaea cv. Gloriosa | Nymphaeaceae | |
| Nymphaea cv. Green Smoke | Nymphaeaceae | |
| Nymphaea cv. Hal Miller | Nymphaeaceae | |
| Nymphaea cv. Helvola | Nymphaeaceae | |
| Nymphaea cv. Hermine | Nymphaeaceae | |
| Nymphaea cv. Jack Wood | Nymphaeaceae | |
| Nymphaea cv. James Brydon | Nymphaeaceae | |
| Nymphaea cv. Joey Tomocik | Nymphaeaceae | |
| Nymphaea cv. King of Siam | Nymphaeaceae | |
| Nymphaea cv. Lemon Chiffon | Nymphaeaceae | |
| Nymphaea cv. Madam Ganna Walska | Nymphaeaceae | |
| Nymphaea cv. Madame Wilfron Gonnere | Nymphaeaceae | |
| Nymphaea cv. Marliac Carnea | Nymphaeaceae | |
| Nymphaea cv. Mary | Nymphaeaceae | |
| Nymphaea cv. Masaniello | Nymphaeaceae | |
| Nymphaea cv. Mayla | Nymphaeaceae | |
| Nymphaea cv. Panama Pacific | Nymphaeaceae | |
| Nymphaea cv. Pearl of the Pool | Nymphaeaceae | |
| Nymphaea cv. Perry’s Baby Red | Nymphaeaceae | |
| Nymphaea cv. Perry’s Crinkled Pink | Nymphaeaceae | |
| Nymphaea cv. Perry’s Pink Delight | Nymphaeaceae | |
| Nymphaea cv. Perry’s Red Beauty | Nymphaeaceae | |
| Nymphaea cv. Perry’s Red Dwarf | Nymphaeaceae | |
| Nymphaea cv. Perry’s Red Glow | Nymphaeaceae | |
| Nymphaea cv. Perry’s Strawberry Pink | Nymphaeaceae | |
| Nymphaea cv. Perry’s Super Red | Nymphaeaceae | |
| Nymphaea cv. Pink Beauty | Nymphaeaceae | |
| Nymphaea cv. Pink Pearl | Nymphaeaceae | |
| Nymphaea cv. Pink Pumpkin | Nymphaeaceae | |
| Nymphaea cv. Pink Sensation | Nymphaeaceae | |
| Nymphaea cv. Queen of Siam | Nymphaeaceae | |
| Nymphaea cv. Robinsoniana | Nymphaeaceae | |
| Nymphaea cv. Sir Gallahad | Nymphaeaceae | |
| Nymphaea cv. Star of Siam | Nymphaeaceae | |
| Nymphaea cv. Sultan | Nymphaeaceae | |
| Nymphaea cv. Texas Dawn | Nymphaeaceae | |
| Nymphaea cv. Virginalis | Nymphaeaceae | |
| Nymphaea cv. Woods Blue Goddess | Nymphaeaceae | |
| Nymphaea odorata cv. Sulphurea Grandiflora | Nymphaeaceae | |
| Nymphaea x laydekeri cv. Fulgens | Nymphaeaceae | |
| Nymphoides geminata | Menyanthaceae | Australia(New South Wales) |
