228 ^nsc. PUBLICATION 303, U. S. DEPT. OF AGRICULTURE 
Rhododendron viscosum (L.) Torr. Swamp azalea. 
Azalea viscosa L. 
Range: ^, 26, 27, 28. 29, 30. 
Site: Moist, sun, shade. 
Fruit: Capsule. 
A large shrub ; flowers June-July ; stolonif erous forms are often found. 
Rliodora canadensis, see Rliododendron canadense. 
Ehoeidiiim cinereum, see RJius micropliyUa. 
Rhoeidium microphyllum, see Rhus micropTiyUa. 
Rhoeidinm potosinum, see Rhus micrGphylla. 
Rhus spp. 
This genus has been variously divided. One section in particular, {Lo'badium 
(Raf.) DC), has been much separated as SchmaUzia. The group Venetiatae 
Engelm. has been much separated as Toxicodendron. 
Most species grow on neutral soil: nearly all species are comparatively free 
from insects and diseases ; propagation is by stem or root cuttings, or by seed 
sown as soon as ripe or stratified and sown in spring. 
Stomach records (in addition to specific records) : Seventy-one species of birds 
including ruffed grouse, sharp-tailed grouse, lesser prairie chickens, bobwhite, 
California quail, plumed quail, wild turkey, and mourning dove; composed 3.17 
percent of winter food of ruffed grouse in New York, and 3.8 percent of winter 
food or the same bird for the northeastern United States; opossum. Ooserva- 
Hons (in addition to specific records) : Thirty-three species of birds, including 
ruffed grouse. An important food of bobwhite in Oklahoma ; ranks tenth in the 
list of quail food plants in the Southeast; Mearn's quail; rock squirrel, cedar- 
belt cottontail ; preferred food of cottontail rabbit. 
Rhus albida, see Rlius gJalra. 
Rhus angnstiarum, see Rhus glalra. 
Rhus arbuscula, see Rhus gialra. 
Rhus arguta, see Rhus gJalra. 
Rhus aromatica Ait. (pis. 32 A, 5.' 33). Fragrant sumac. 
R. canadensis lsl?.vs'n.., R. crenata (Mill.) Rjhd. , R. nortonii (Greene) Rydb., 
Schtnaltzia aromatica Desv.. S. arenaria Greene, 8. iUinoensis Greene. 
Range : 20, 22. 23. 24, 25, 26, 27, 28, 29. 
Site : Dry, well-drained, sun, shade. 
Fruit : Drupe ; available July-August, persistent the year round. 
A small to large shrub ; adapted to many kinds of soil including limestone ; 
thicket forming. 
Stomach, records: Western flicker, ruffed grouse. Observations: Preferred 
food of wild turkey ; white-tailed deer. 
Rhus ashei (Small) Greene. 
R. caroUniana Ashe, not Mill., Schnialtzia ashei Small. 
Range: 28. 
Site: TTell-drained, sun. 
Fruit: Drupe. 
A small shrub ; commonly occurs in sandy soil. 
Rhus asplenifolia, see Rhus glabra. 
Rhus canadensis, see Rhus aromatica. 
Rhus choriophylla Woot. and Standi. 
Range : 11, 14. 
Site : Dry, well-drained, sun. 
Fruit : Drupe, available through winter. 
A small to large evergreen shrub. 
Rhus cismontana, see Rhus glabra. 
Rhus copallina L. Dwarf sumac. 
Schmaltzia copallina (L.) Small. 
Range : 20, 21. 22. 23, 24, 25, 27, 28, 29, 30, 32. 
Site : Dry, well-drained, sun, shade. 
Fruit: Drupe; available September-October, persistent the year round. 
