Primus. 



ROSACEA. 35 



A small tree, 6 to 12 metres in height, with a trunk rarely exceeding 

 0.30 metre in diameter; rich woods, or along streams and the borders of 

 ponds and swamps, reaching its greatest development on the bottom-lands 

 of eastern Texas. 



Wood heavy, very hard, strong, very close-grained, compact, satiny, 

 susceptible of a beautiful polish ; medullary rays numerous, thin ; color 

 rich bright brown or often red, the sap-wood lighter ; used for the handles 

 of tools, etc. 



Often cultivated for the yellow, red, or rarely nearly black acid, or 

 rarely sweet fruit. 



104. Pruims angustifolia, Marsh. 

 Chickasaw Plum. Hog Plum. 



Probably native of the eastern slopes of the southern Rocky Moun- 

 tains, where it is found at an altitude of 7,000 feet, and of the high plateau 

 east and southeast of them ; now widely naturalized by early cultivation 

 throughout the Atlantic forests south of Pennsylvania and west of the 

 Alleghany Mountains, extending as far north as southern Michigan. 



A small tree, 6 to 8 metres in height, with a trunk 0.15 to 0.20 metre 

 in diameter, or often a low shrub, generally along streams or borders of 

 prairies, in rich soil. 



Wood heavy, soft, not strong, close-grained, compact ; medullary rays 

 numerous, thin ; color light brown or red, the sap-wood lighter. Often 

 cultivated for its globose red or yellow fruit. 



105. Prunus Pennsylvanica, L. f. 



Wild Red Cherry. Pin Cherry. Pigeon Cherry. 



Labrador, shores of Hudson's Bay, and west through the Saskatche- 

 wan region to the valley of the upper Fraser River; south through the 

 northern States to Pennsylvania, central Michigan, northern Illinois, 

 central Iowa, and along the high Alleghany Mountains of North Carolina 

 and Tennessee, and the Rocky Mountains of Colorado. 



A small tree, rarely exceeding 12 metres in height, with a trunk some- 

 times 0.00 metre in diameter, or in the Rocky Mountain region reduced 

 to a. low shrub ; common in all the northern forests, and taking posses- 

 sion of ground cleared by fire of forest growth. 



Wood light, soft, close-grained, compact ; medullary rays numerous, 

 thin ; color light brown, the sap-wood clear yellow. 



The small acid fruit used domestically and by herbalists in the prepa- 

 ration of cough mixtures, etc. 



106. Prunus umtaellata. Ell. 



Sloe. Black Sloe. 



South Carolina, south near the coast to Mosquito Inlet and Tampa 

 Bay, Florida, and through central Alabama to eastern Mississippi. 



