Plant Gallery

Rafinesquia neomexicana

desert chicory

Ranunculus abortivus

buttercup

Ranunculus acriformis

sharp-leaf buttercup

Ranunculus acris

buttercup

Ranunculus aquatilis

white water-buttercup

Ranunculus arvensis

corn buttercup

Ranunculus californicus

buttercup

Ranunculus cymbalaria

alkali buttercup

Ranunculus ficaria

fig buttercup

Ranunculus flabellaris

yellow water-buttercup

Ranunculus muricatus

buttercup

Ranunculus parviflorus

buttercup

Ranunculus repens

creeping buttercup

Ranunculus sardous

buttercup

Ranunculus sceleratus

cursed buttercup

Ranunculus uncinatus

woodland buttercup

Raphanus raphanistrum

wild radish

Raphanus sativus

cultivated radish

Ratibida columnifera

long-headed coneflower

Ratibida pinnata

coneflower

Reseda luteola

Reynoutria X bohemica

knotweed

Reynoutria japonica

Reynoutria sachalinensis

knotweed

Rhamnus cathartica

buckthorn

Rhamnus lanceolata

buckthorn

Rhamnus purshiana

Rhaponticum repens

russian knapweed = centaurea repens

Rheum rhabarbarum

rhubarb

Rhexia mariana

maryland meadow-beauty

Rhinanthus minor

yellow-rattle

Rhus aromatica

fragrant sumac

Rhus copallinum

winged sumac

Rhus glabra

smooth sumac

Rhus typhina

staghorn sumac

Ribes aureum

golden currant

Ribes sanguineum

blood currant

Richardia brasiliensis

tropical mexican clover

Richardia grandiflora

largeflower mexican-clover

Richardia scabra

florida pusley. rough mexican clover

Ricinus communis

castor-bean

Robinia hispida

Robinia pseudoacacia

black locust

Romneya coulteri

coulter's matilija poppy

Rorippa austriaca

austrian yellowcress

Rorippa curvisiliqua

yellowcress

Rorippa palustris

yellowcress

Rorippa sinuata

yellowcress

Rorippa sylvestris

fieldcress

Rosa arkansana

rose