NATIVE WOODY PLANTS OF THE UNITED STATES 939 
Ribes wolfii Rothr. Rothrock currant. 
R. mogollonicum Greene. 
Range: 13, 14. 
Site: Well-drained, moist, sun. 
Fruit: Berry, available in August. 
A small to large shrub. Fairly good cattle browse in Utah. 
Ricinella vaseyi (Coult.) Coult. and Fish. 
Adelia vaseyi Coult. 
Range: 17. 
Site: Dry, sun. 
Fruit: Capsule. 
A small to large dioecious shrub; sometimes spiny; leaves few. 
Ricinophyllum horridum, see Oplopanag horridum. 
Ricinus communis L. Castor-bean. 
Range: 3. 5, 10; 1 20.30: 
Site: Well-drained, sun. 
Fruit: Capsule, available August-September. 
A large shrub or rarely a small tree; probably introduced from Africa, but 
more or less naturalized in the regions indicated; herbaceous, and not escaping 
northwards. 
tomach records: Bobwhite, mourning dove. 
Riddelia cooperi, see Psilostrophe cooperi. 
Robinia spp. Locusts. 
Stomach records (in addition to specific records): Seven species of birds 
including ruffed grouse, bobwhite, western quail, and mourning dove. 
Robinia boyntonii Ashe. 
R. hispida rosea Hort. 
Range: 27. 
Site: Well-drained, sun. 
Fruit: Legume. 
A large shrub or rarely a large tree; flowers May—June; probably does not 
produce fruit; very handsome when in flower. 
Robinia elliottii (Chapm.) Ashe. 
R. hispida elliottii Chapm. 
Range: 28, 29, 30. 
Site: Dry, well-drained, sun. 
Fruit: Legume. 
A large, spiny shrub; flowers May—June; occurs on sandy and other Soils. 
Robinia fertilis Ashe. 
Range: 27. 
Site: Well-drained, sun. 
Fruit: Legume. 
A small to large, stoloniferous shrub; fruit freely produced; spiny or unarmed. 
Robinia grandifiora Ashe. 
Range: 27. _ 
Site: Well-drained, sun. 
Fruit: Legume, available in July. 
A small to large shrub; flowers April-May; rarely spiny; easily propagated by 
root suckers which are extensively produced; occurs in sandy and other soils. 
Robinia hartwigii Koehne. 
R. viscosa hartwigii (Koehne) Ashe. 
Range: 27, 28, 
Site: Well-drained, sun. 
Fruit: Legume. 
A large, spiny shrub; flowers in June. 
Robinia hispida L. Rose-acacia. 
Range: 25, 27, 28. 
Site: Dry, well-drained, moist, sun, shade. 
Fruit: Legume, available in September. 
A small to large, stoloniferous shrub; spiny, or more commonly unarmed ; 
foliage not dense; tolerant of arid conditions; commonly produces little fruit; 
propagates extensively by suckering. 
ie 28 1G 
