176 MISC. PUBLICATION 303, U. 8. DEPT. OF AGRICULTURE 
Ostrya baileyi Rose. Bailey hophornbeam. 
Range: 11, 16, 19. 
Site: Dry, well-drained, sun. 
Fruit: Nutlet. 
A small tree. 
Ostrya knowltonii Coy. Western hophornbeam. 
Range: 9, 11. 
Site: Dry, well-drained, sun. 
Fruit: Nutlet. 
A large shrub to small tree. 
Ostrya virginiana (Mill.) Koch. Hophornbeam. 
Range: 15, 18; 20, 200.22, 23,24, 25526 28:529.-30: 
Site: Dry, well-drained, moist, sun, shade. 
Fruit: Nutlet, available August—October. 
A small, very slow-growing tree. Var. glandulosa (Spach) Sarg., the more 
northern form, has been noted to be possibly the same as O. baileyi. 
Stomach records: Five species of birds including ruffed grouse, bobwhite, 
ptarmigan; white-tailed deer; composed 14.73 percent of winter food of ruffed 
grouse in New York. Observations: Five species of birds, including ruffed 
grouse, ring-necked pheasant; staple food of northern Sharp-tailed grouse in 
Quebec; white-tailed deer, cottontail rabbit. 
Oxycoccus erythrocarpus, see Hugeria erythrocarpa. 
Oxycoccus macrocarpus, see Vaccinium macrocarpon. | 
Oxycoccus oxycoccus, see Vaccinium oxycoccus. 
Oxycoccus palustris, see Vaccinium oxrycoccus. 
Oxydendrum arboreum (L.) DC. (pl. 22, B). Sourwood. 
Andromeda arboreum L. 
Range: 25, 27, 28, 29, 30. 
Site: Dry, well-drained, sun, shade. 
Fruit: Capsule, available September—October. 
A large tree; flowers June-August; rarely attacked by insects or diseases; 
wood sometimes used locally. 
Stomach records: White-tailed deer. A good bee plant. 
Oxytenia acerosa Nutt. 
Range: 9, 10. 
Site: Dry, sun. 
Fruit: Achene. 
A large shrub, leafiess and rushlike, or with leaves; often occurs on alkaline 
soil. Not eaten by livestock and considered poisonous to cattle by stockmen. 
Pachistima canbyi Gray. Cliffgreen, 
Range: 27. 
Site: Dry, well-drained, sun, shade. 
Fruit: Capsule, available August-September. 
A small evergreen shrub; flowers April-May; occurs on limestone and other 
soils; creeping branches root. 
Stomach records: White-tailed deer. 
Pachistima myrsinites (Pursh) Raf. Myrtle boxleaf. 
Range: 1, 2, 4, 9, 12, 13, 14. 
Site: Dry, well-drained, moist, sun, shade. 
Fruit: Capsule, available July—September. 
A small evergreen shrub; flowers May—July; densely branched, very leafy; 
sometimes nearly prostrate. 
Stomach records: Richardson’s grouse; mountain sheep, black-tailed deer, 
plains white-tailed deer. Occasionally browsed by livestock; rarely causes live- 
stock poisoning. 
Pachysandra procumbens Michx. Pachysandra. 
Range: 25, 27, 28, 29, 30. 
Site: Well-drained, sun, shade. 
Fruit: Capsule. 
A small evergreen shrub; flowers April-May; often occurs on calcareous 
soil; forms large clumps by means of rootstocks. 
