NATIVE WOODY PLANTS OF THE UNITED STATES 
207 
Prunus tenuifolia, see Primus mexicana. 
Prunus texana, see also Prunus rivularis. 
Prunus texana Dietr. Wild peach. 
P. glandulosa (Hook.) Torr. and Gray, P. Jiookeri Schneid., A^nygdalus 
glandulosa Hook., A. texana (Dietr.) Wight. 
Range : 17, 20, 29, 30. 
Site : Well-drained, sun. 
Fruit : Drupe, available April-May. 
A small to large almost evergreen shrub ; somewhat thorny ; found on sand 
or sandy loam; apparently does not occur on limestone; root system deep; 
drought resistant. Furnishes a small amount of forage for sheep and goats. 
Prunus umbellata Elliott. Black sloe. 
Range : 28, 29, 30. 
Site: Dry, well-drained, moist, sun. 
Fruit: Drupe, available July-September. 
A small tree ; occurs in sandy and other soils. 
Prunus valida (Woot. and Standi.) Rydb. 
Padus valida Woot. and Standi. 
Range: 9, 14. 
Site: Well-drained, sun. 
Fruit: Drupe. 
A small tree ; flowers in June. 
Prunus virens Shreve. Southwestern black cherry. 
Padus virens Woot. and Standi. 
Range : 10, 11, 14. 
Site : Moist, sun. 
Fruit : Drupe, available August-September. 
A large shrub to small or large tree ; more or less evergreen ; flowers in May ; 
fruit sometimes borne in great profusion ; attempts to use this as grafting stock 
have been unsuccessful. 
Var. rufula Sarg. (P. rufula Tidest., Padus rufula Woot. and Standi.) is more 
pubescent than the species. 
Observations: Eagerly eaten by bears and other wild animals. Fair to good 
winter browse for livestock. 
Prunus virginiana L. (pi. 28). Choke cherry. 
P. nana (Du Roi) Roem., Padus nana Du Roi, P. virginiana (L.) Mill. 
Range : 21, 22, 23, 24, 25, 26, 27, 28, 29, 30. 
Site; Dry, well-drained, moist, sun, shade. 
Fruit : Drupe, available July-September. 
A large shrub to small tree ; forms dense thickets by sending out long roots 
which sprout at intervals; fruit abundantly produced; 3,000-5,000 seeds per 
pound. 
Var. pumicea (Woot. and Standi.) Palmer, (Padus pumicea Woot. and 
Standi.) occurs in regions 11 and 14. 
Stomach records: 31 species of birds including ruffed grouse, bob-white, 
ring-necked pheasant, sharp-tailed grouse, and greater prairie chicken. Ob- 
servations: Fourteen species of birds including bob white, ring-necked pheasant, 
cottontail rabbit, black bear. 
Prunus watsonii, see Prunus angustifoUa. 
Psedera heptaphylla, see Parthenocissus heptaphylla. 
Psedera quinquefolia, see Parthenocissus quinquefoUa. 
Psedera Titacea, see Parthenocissus vitacea. 
Pseudotsuga spp. Douglas fir. 
Evergreen, monoecious trees of the greatest importance as timber. 
Stomach records (in addition to specific records) : Black-tailed deer. Ob- 
servations (in addition to specific records) : Spruce squirrel. 
130186°— 39 14 
