9209 MISC. PUBLICATION 303, U. 8. DEPT. OF AGRICULTURE 
Quercus platanoides, see Quercus bicolor. 
Quercus pricei Sudw. Coast live oak. 
Range: 5. 
Site: Dry, well-drained, sun. 
Fruit: Acorn, biennial. 
A small to large evergreen tree; occurs in gravelly and other soils. Hardly 
separable from Q. agrifolia. 
Quercus prinoides Willd. Dwarf chinquapin oak. 
Range: 21, 22, 23, 24, 25, 27, 28, 29, 30. 
Site: Dry, sun. 
Fruit: Acorn; annual, available September—October. 
A large shrub to small tree; thicket forming; occurs on sandy, limestone 
and other soils; 400 seeds per pound. 
Observations: Ruffed grouse, cottontail rabbit. 
Quercus prinus, see also Quercus montana. 
Quercus prinus L. Swamp chestnut oak. 
Q. michaucit Nutt. 
Range: 20, 25, 28, 29, 30. 
Site: Well-drained, moist, sun. 
Fruit: Acorn; annual, available September—October. 
A large tree; taproot and deep laterals well developed; long-lived; generaliy 
free from insects and diseases; easily fire-damaged when young; stump sprouts 
never large; Wood durable, much used commercially; a fertile-soil species; 
70-150 seeds per pound, germination 86 percent. 
Stomach records: Mourning dove; white-tailed deer. Observations: Cotton- 
tail rabbit. 
Quercus pumila, see also Quercus ilicifolia. 
Quercus pumila Walt. Running oak. 
Q. humilis Walt. 
Range: 29, 30. 
Site: Dry, well-drained, sun, shade. 
Fruit: Acorn, annual. 
A small evergreen shrub; often forms small sparse thickets by means of root 
stocks; not a pioneer species. 
Stomach records: Bobwhite. 
Quercus pungens, see Quercus undulata. 
Quercus reticulata, see Quercus diversicolor. 
Quercus rhombica, see Quercus laurifolia. 
Quercus rubra, see also Quercus borealis. 
Quercus rubra L. Southern red oak. 
Q. falcata (Michx.) of Amer. auths., Q. digitata (Marsh.) Sudw. 
Range: 20, 25, 27, 28, 29, 30. 
Site: Dry, well-drained, sun. 
Fruit: Acorn; biennial, available September—October. 
A large tree; root system deep as well as Shallow on the same tree; occurs on 
sandy or heavy soils; rapid growing, rather short-lived; very sensitive to late 
frosts; much attacked by heart rot; coppices freely, especially when young; 
much cultivated; wood not durable, somewhat used commercially. 
Var. pogodaefolia (Ell.) Ashe, (Q. pogedacfolia (Ell.) Ashe, QG. pagoda Raf.), 
and var. leuwcophylla Ashe, both occur within the range of the species. 
Quercus rydbergiana Cockerell. Rydberg oak. 
Q. undulata rydbergiane Cockerell. 
Range: 18, 14. 
Site: Dry, sun. 
Fruit: Acorn, annual, 
A small evergreen shrub. 
Quercus sadleriana Brown. Sadler oak. 
Range: 4. 
Site: Dry, well-drained, sun, shade. 
Fruit: Acorn, annual. 
A small to large evergreen shrub; forms dense thickets; occurs at altitudes 
of from 5,000-7,000 feet. 
