202 MISC. PUBLICATION 303, U. S. DEPT. OF AGRICULTURE 



Prunus caroliniana Ait. Laurel cherry. 



P. sempervirens Willd., Laurocerasus caroliniana (Mill.) Roem., Padus 

 caroliniana Mill., Cerasus caroliniana Michx. 

 Range : 20, 29, 30. 

 Site : Well-drained, moist, sun. 

 Fruit: Drupe, persistent the year round. 



A large shrub to small or large tree ; evergreen ; flowers February- April ; 

 rapid growing ; thicket forming. 



Observations: Three species of birds. Leaves poisonous to livestock. 



Prunus cerasus L. Sour cherry. 



Range : 22, 25, 27. 

 Site: Dry, well-drained, sun. 

 Fruit : Drupe, available June-July. 



A small to large tree ; flowers April-May ; introduced from southern Europe 

 and more or less naturalized in the regions indicated. 



Stomach records: Three species of birds, including bobwhite. Observations: 

 Seven species of birds. 



Prunus chicasa, see Prunus angustifolia. 



Prunus corymbulosa Rydb. Rocky Mountain red cherry. 



P. pennsylvanica corymbulosa (Rydb.) Wight, Cerasus trichopetala Greene. 

 Range: 12. 

 Site: Dry, sun. 

 Fruit: Drupe. 

 A small to large shrub ; flowers May-June ; commonly occurs in stony places. 



Prunus cuneata, see Prunus susquehanae. 



Prunus cuthbertii Small. Cuthbert cherry. 



Padus cuthbertii Small. 

 Range: 28. 



Site : Well-drained, moist, sun. 

 Fruit: Drupe, available July-August. 

 A large shrub to small tree. 



Prunus demissa (Nutt.) Walp. (pi. 26, B). Western chokecherry. 



P. virginiana demissa Sarg., Cerasus demissa Nutt., Padus demissa Roem. 

 Range : 1, 2, 4, 6, 7, 9, 12, 13, 14, 15, 16, 18, 21. 

 Site : Dry. well-drained, moist, sun. 

 Fruit: Drupe, available July-October. 



A large shrub to small tree ; flowers April-May ; thicket forming. 

 Var. melanocarpa Nels. (Padus melanocarpa (Nels.) Shaf., Prunus mclano- 

 carpa (Nels.) Rydb.), the black western chokecherry, occurs with the species; 

 thicket forming ; spreads by rhizomes ; root system shallow with occasional 

 deep-feeding roots ; 3,000-5,000 seeds per pound. 



Stomach records: Six species of birds; black-tailed deer, plains white-tailed 

 deer. Observations: Three species of birds, including ring-necked pheasant, 

 sharp-tailed grouse ; of outstanding importance as browse for mule deer ; pica ; 

 eaten avidly by many birds. Commonly lightly to moderately browsed by 

 stock ; overgrazing of this species commonly leads to poisoning, notably in the 

 spring; not harmful in the fall. 



Prunus depressa, see Prunus pumila. 



Prunus emarginata (Dougl.) Walp. Bitter cherry. 



Cerasus emarginata Dougl., C. glandulosa Kellogg., C. californica Greene, 

 C. crenulata Greene, C. arida Greene, C. rhamnoides Greene, C. Jcellog- 

 giana Greene, C. padifolia Greene, C. obliqua Greene, C. parvifolia 

 Greene, C. obtusata Greene. 

 Range : 1, 2, 4, 6, 8, 9, 10, 11, 12, 13, 14. 

 Site : Dry, well-drained, moist, sun. 

 Fruit: Drupe, available May-September. 



A large shrub to small or large tree; flowers April-May; densely thicket 

 forming ; flowers and fruit appear earliest near the Coast. 



Var. villosa Sudw., (P. mollis Walp., P. emarginata mollis Brew., Cerasus 

 prunifolia Greene, P. prunifolia (Greene) Shaf.), the plumleaf cherry, occurs 

 within the range of the species. 



