Photos of North American Plants
R—Z
©The
World Botanical Associates Web Page
A—C
D—K
L—Q
*Denotes species and State of origin for
sample(s) with
antitumor activity. Click on the genus name to view plant photos, or
click on the species name (epithet) to see historical data on
recollections of active plants for cancer research.
|
Rafinisquea |
neomexicana |
|
|
CA |
|
Ranunculus |
cymbalaria |
|
|
AK |
|
Ranunculus |
repens |
|
|
OR |
|
Rhexia |
mariana |
|
|
GA* |
|
Rhizophora |
mangle |
|
|
YUC* |
|
Rhododendron |
occidentale |
|
|
CA |
|
Rhus |
aromatica |
var. |
pilosissima |
NM |
|
Rhus |
glabra |
|
|
UT |
|
Rhus |
integrifolia |
|
|
BCN |
|
Rhus |
lentii |
|
|
BCS |
|
Rhus |
microphylla |
|
|
TX |
|
Rhus |
ovata |
|
|
CA |
|
Rhus |
trilobata |
|
|
CA NM |
|
Rhus |
virens |
|
|
TX |
|
Ribes |
aureum |
|
|
CA |
|
Ribes |
bracteosum |
|
|
WA* |
|
Ribes |
erythrocarpum |
|
|
OR* |
|
Ribes |
indecorum |
|
|
CA |
|
Ribes |
laucustre |
|
|
CA |
|
Ribes |
viscosissimum |
|
|
CA |
|
Ricinus |
communis |
|
|
CA |
|
Romneya |
trichocalyx |
|
|
CA |
|
Rorippa |
hispida |
|
|
AK |
|
Rosa |
californica |
|
|
CA* |
|
Rosa |
gymnocarpa |
|
|
CA |
|
Rosa |
minutifolia |
|
|
BCN |
|
Rosa |
pisocarpa |
|
|
CA |
|
Rosa |
woodsii |
var. |
ultramontana |
NV |
|
Rosa |
cv. 'Talisma' |
|
cultivar |
AZ* |
|
Rubus |
chamaemorus |
|
|
AK |
|
Rubus |
discolor |
|
|
CA |
|
Rubus |
neomexicanus |
|
|
AZ* |
|
Rubus |
parviflorus |
|
|
CA* OR |
|
Rubus |
procerus |
|
|
CA* |
|
Rubus |
spectabilis |
|
|
AK |
|
Rudbeckia |
hirta |
|
|
TX* |
|
Rumex |
hymenosepalus |
|
|
CA |
|
Salazaria |
mexicana |
|
|
AZ NV |
|
Salicornia |
subterminale |
|
|
BCN |
|
Salix |
alaxensis |
|
|
AK |
|
Salix |
barclayi |
|
|
AK |
|
Salix |
commutata |
|
|
AK |
|
Salix |
eastwoodiae |
|
|
CA |
|
Salix |
exigua |
|
|
CA* |
|
Salix |
hookeri |
|
|
OR |
|
Salix |
lasiandra |
|
|
NV |
|
Salix |
lasiolepis |
|
|
CA |
|
Salix |
longipes |
|
|
SC* |
|
Salix |
lucida |
|
|
CA |
|
Salix |
melanopsis |
|
|
CA |
|
Salix |
ovalifolia |
|
|
AK |
|
Salix |
reticulata |
|
|
AK |
|
Salix |
rotundifolia |
|
|
AK |
|
Salix |
sitchensis |
|
|
CA |
|
Salvia |
apiana |
|
|
BCN |
|
Salvia |
ballotiflora |
|
|
TX |
|
Salvia |
columbariae |
|
|
CA |
|
Salvia |
|