Plant Gallery

Oenothera albicaulis

eveningprimrose

Oenothera biennis

eveningprimrose

Oenothera contorta

contorted-pod evening-primrose

Oenothera curtiflora

small-flowered gaura

Oenothera elata

eveningprimrose

Oenothera erythrosepala

Oenothera filiformis

gaura

Oenothera laciniata

eveningprimrose

Oenothera pallida

pale evening-primrose

Oenothera parviflora

eveningprimrose

Oenothera perennis

Oenothera speciosa

eveningprimrose

Oenothera strigosa

hairy evening-primrose = oenothera villosa ssp. strigosa

Oenothera tanacetifolia

tansyleaf evening-primrose

Oenothera villosa

eveningprimrose

Oldenlandia corymbosa

flat-top mille graines

Oligoneuron rigidum

Onobrychis viciifolia

sainfoin

Onopordum acanthium

scotch thistle

Oplismenus hirtellus

Opuntia humifusa

pricklypear

Opuntia polyacantha

plains prickly-pear

Opuntia stricta

common prickly-pear

Oreocarya celosioides

buttecandle

Origanum vulgare

oregano

Ornithogalum umbellatum

common star-of-bethlehem

Orobanche minor

little broomrape

Orobanche ramosa

broomrape

Orobanche uniflora

one-flowered broomrape

Orontium aquaticum

goldenclub

Orthocarpus hispidus

hairy owl-clover

Oryzopsis hymenoides

indian ricegrass

Osmorhiza berteroi

mountain sweet-cicely = osmorhiza chilensis

Osmorhiza occidentalis

western sweet-cicely

Osteospermum ecklonis

african daisy

Oxalis articulata

bent wood-sorrel

Oxalis corniculata

reeping woodsorrel

Oxalis debilis

large flowered pink woodsorrel

Oxalis pes-caprae

bermuda buttercup

Oxalis stricta

woodsorrel

Oxalis violacea

woodsorrel

Oxytropis lambertii

crazyweed

Oxytropis sericea

crazyweed