NATIVE WOODY PLANTS OF THE UNITED STATHS 111 
Corylus americana Walt. American hazelnut. 
Range: 15, 18, 21, 22, 28, 24, 25, 26, 27, 28, 29. 
Site: Dry, well-drained, sun, shade. 
Fruit. Nut, available July-September, occasionally persistent until 
December—February. 
A large, thicket-forming shrub; coppices very freely after cutting; seldom 
bears fruit in the shade; easily transplanted; foliage generally dense; 250 
seeds per pound, germination 80 percent, about 60 usable plants per pound 
of seed. 
Stomach records: Ruffed grouse, bobwhite. Ovservations: Ring-necked phea- 
sant; blue jay; squirrels, white-tailed deer. Somewhat grazed by sheep. 
Corylus californica (DC.) Rose. California hazelnut. 
C. rostrata californica DC. 
Range: 1, 2, 3, 4. 
Site: Well-drained, moist, sun, shade. 
Fruit: Nut, available September—November. 
A large shrub to small tree; thicket forming; foliage more or less dense. 
Observations: Staple winter food of Steller’s jay; Douglas’ squirrel, Town- 
send’s chipmunk, Allen’s chipmunk, golden-mantled ground squirrel, digger 
squirrel; of slight importance as browse for mule deer. Extensively or not at 
all browsed by livestock. 
Corylus cornuta, see Corylus rostrata. 
Corylus rostrata Ait. Beaked hazelnut. 
C. cornuta Marsh. 
Ranges) 15, 18.20 22, 23, 24, 25, 26, 27, 28, 29: 
Site: Dry, well-drained, sun. 
Fruit: Nut, available August-September. 
A small to large, thicket-forming shrub, often occurs on acid soil. 
Stomach records: Ruffed grouse, bobwhite; sharp-tailed grouse, prairie 
chicken ; composed 2.7 percent of winter food of the northern sharp-tailed grouse 
in Quebec and Ontario. Observation: Blue jay; moose, southwestern chip- 
munk, eastern chipmunk, squirrels; eighth most important preferred winter 
food of white-tailed deer. 
Corypha hystrix, see Rhapidophyllum hystriz. 
Corypha minor, see Sabal minor. 
Corypha palmetto, see Sabal palmetto. 
Corypha pumila, see Sabal minor. 
Corypha repens, see Serenoa repens. 
Cotinus americanus Nutt. Smoketree. 
C. cotinoides (Nutt.) Britt., Rhws cotinoides Nutt. 
Range: 16, 17, 20, 25, 29. 
Site: Dry, well-drained, sun. 
Fruit: Drupe, available August-September. 
A large shrub to small or large tree; flowers April-May; ordinarily occurs 
on calcareous soil; fruit produced very sparingly; wood very durable as fence 
posts; very brilliant scarlet in autumn. 
Cotinus cotinoides, see Cotinus americanus. 
Cotoneaster pyracantha (L.) Spach. Firethorn. 
Pyracantha coccinea Roem., Crataegus pyracantha Medic. 
Range: 27, 28, 29. 
Site: Dry, well-drained, sun. 
Fruit: Pome; available October, persistent through winter. 
A small to large evergreen shrub with dense foliage; flowers in May; very 
spiny ; difficult to transplant except when small. 
Observations: Robin; generally attractive to birds. 
Coursetia axillaris Coult. and Rose. 
Range: 17. 
Site: Dry, sun. 
Fruit: Legume. 
A large shrub to small tree; densely branched. 
33772°—38——8 
