Vascular Plants

Browse by genus:

A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z
Genus names beginning with O:
25 genera
49 species
16 subspecies and varieties
Show only taxa with photos
Odontites (1 species)
Oemleria (1 species)
Oenanthe (1 species)
Oenothera (8 species)
Olsynium (1 species)
Onobrychis (1 species)
Ononis (1 species)
Onopordum (1 species)
Ophioglossum (1 species)
Oplopanax (1 species)
Opuntia (2 species)
Oreostemma (1 species)
Origanum (1 species)
Ornithogalum (1 species)
Orobanche (1 species)
Orogenia (1 species)
Orthilia (1 species)
Orthocarpus (5 species)
Oryzopsis (1 species)
Osmorhiza (4 species)
Oxalis (6 species)
Oxyria (1 species)
Oxytheca (1 species)
Oxytropis (3 species)
Ozomelis (3 species)