36 ROSACEA. Prunus. 



A small tree, 5 to 6 metres in height, with a trunk 0.25 to 0.38 metre- 

 in diameter ; dry, sandy soil. 



Wood heavy, hard, close-grained, compact ; medullary rays numerous, 

 thin ; color dark reddish brown, the sap-wood much lighter. 



107. Prunus emarginata, Walp. 



Vancouver's Island and the valley of the lower Fraser River, south 

 through western Washington and Oregon, and along the western slopes 

 of the Sierra Nevada and in the Coast Ranges, from San Francisco Bay 

 to the Santa Lucia Mountains, California; east to the western slopes of 

 the Bitter Root Mountains, Idaho, and the valley of the Jocko River, 

 Montana. 



A tree often 12 to 15 metres in height, with a trunk sometimes ex- 

 ceeding 0.30 metre in diameter ; at high elevations and throughout cen- 

 tral California reduced to a shrub 2 to 3 metres in height, or, in the Santa 

 Lucia Mountains, 15 to 1^ metres in height, with a trunk 0.G0 to 0.90 

 metre in diameter ; generally along streams or in low, rich woods. The 

 common northern and Idaho form, more or less woolly pubescent, espe- 

 cially on the under side of the leaves, is var. mollis, Brewer. 



Wood light, soft, not strong, brittle, close-grained, compact ; medullary 

 rays numerous, thin ; color brown streaked with green. 



108. Prunus serotina, Ehrh. 



Wi/il B/ark Cherry. Rum Cherry. 



Southern Ontario, southward through the Atlantic forests to Matan- 

 zas Inlet and Tampa Bay. Florida; west to the valley of the Missouri 

 River, Dakota, eastern Kansas, the Indian Territory, and the valley of 

 the upper San Antonio River. Texas. 



A tree 18 to 30 metres in height, with a trunk 0.00 to 1.20 metres, or 

 exceptionally 1.50 metres, in diameter; rich, generally upland woods; 

 common and reaching its greatest development on the western slopes of 

 the Alleghany Mountains from West Virginia southward; not common 

 and of .small size in the Gulf region and Tevis. 



Wood light, hard, strong, close, straight -grained, compact, easily 

 worked; medullary rays numerous, thin; color light brown or red, 

 growing darker with exposure, the thin sap-wood yellow; largely used 

 and esteemed in cabinet work, interior finish, etc., and now becoming 

 scarce. 



The bark contains a bitter tonic principle, and infused witli cold water 

 generates a small percentage of hydrocyanic acid, and is employed as a 

 tonic and sedative in cases of pulmonary consumption in the form of cold 

 infusions, syrups, and fluid extracts : the bitter fruit used domestically in 

 the preparation of cherry brandy. 



