Plant Database (by name)

Nuttall's Townsend daisy - Townsendia nuttallii Dorn

Nuttall's violet - Viola nuttallii Pursh

Nye gilia - Aliciella nyensis (Reveal) J.M. Porter

nylon hedgehog cactus - Echinocereus viridiflorus Engelm.

nylon hedgehog cactus - Echinocereus viridiflorus Engelm. var. viridiflorus

Oahu riverhemp - Sesbania tomentosa Hook. & Arn.

oak - Quercus L.

oak mistletoe - Phoradendron leucarpum (Raf.) Reveal & M.C. Johnston

Oak Ridge lupine - Lupinus diffusus Nutt.

Oakes' evening-primrose - Oenothera oakesiana (Gray) J.W. Robbins ex S. Wats. & Coult.

Oakes' eyebright - Euphrasia oakesii Wettst.

Oakes' pondweed - Potamogeton oakesianus J.W. Robbins

oakforest woodrush - Luzula luzuloides (Lam.) Dandy & Wilmott

Oakland mariposa lily - Calochortus umbellatus Wood

oakleaf fleabane - Erigeron quercifolius Lam.

oakleaf goosefoot - Chenopodium glaucum L.

oakleaf hydrangea - Hydrangea quercifolia Bartr.

oat - Avena L.

oatgrass - Arrhenatherum Beauv.

obedient plant - Physostegia virginiana (L.) Benth.

obedient plant - Physostegia virginiana (L.) Benth. ssp. virginiana

oblongfruit serviceberry - Amelanchier bartramiana (Tausch) M. Roemer

oblongleaf bluebells - Mertensia oblongifolia (Nutt.) G. Don

oblongleaf snakeherb - Dyschoriste oblongifolia (Michx.) Kuntze

obtuse sedge - Carex obtusata Lilj.

obtuseleaf aspen moss - Orthotrichum obtusifolium Brid.

obtuseleaf desmatodon moss - Desmatodon obtusifolius (Schwaegr.) Schimp.

obtuseleaf pohlia moss - Pohlia obtusifolia (Brid.) L. Koch

oceanblue morning-glory - Ipomoea indica (Burm. f.) Merr.

oceanblue phacelia - Phacelia ranunculacea (Nutt.) Constance

oceanspray - Holodiscus discolor (Pursh) Maxim.

oceanspray - Holodiscus (K. Koch) Maxim.

Oconee bells - Shortia galacifolia Torr. & Gray

ocotillo - Fouquieria splendens Engelm.

October flower - Polygonella polygama (Vent.) Engelm. & Gray

October ladies'-tresses - Spiranthes ovalis Lindl.

October ladies'-tresses - Spiranthes ovalis Lindl. var. ovalis

octopus tree - Schefflera actinophylla (Endl.) H.A.T. Harms

Oeder's lousewort - Pedicularis oederi Vahl ex Hornem.

Oeder's plagiopus moss - Plagiopus oederiana (Sw.) Crum & Anderson

oemleria - Oemleria Reichenb.

Oersted's campylopus moss - Campylopus oerstedianus (C. Müll.) Mitt.

official burnet - Sanguisorba officinalis L.

Ogeechee tupelo - Nyssa ogeche Bartr. ex Marsh.

ohelo 'ai - Vaccinium reticulatum Sm.

Ohio buckeye - Aesculus glabra Willd.

Ohio buckeye - Aesculus glabra Willd. var. arguta (Buckl.) B.L. Robins.

Ohio goldenrod - Oligoneuron ohioense (Frank ex Riddell) G.N. Jones

oil shale columbine - Aquilegia barnebyi Munz

oil shale fescue - Festuca dasyclada Hack. ex Beal