ROSACE^E 531 



Distribution. Borders of streams and moist sandy soil in the bottoms of canons, 

 and as a low shrub on dry hillsides and mesas from the shores of the Bay of San 

 Francisco southward through the coast ranges of California to the foothills of the 

 San Bernardino Mountains, and on Santa Cruz and Santa Rosa islands. 



Occasionally cultivated as an ornamental plant in western and southern Europe. 



18. Prunus integrifolia, Sarg., nov. nom. 

 (Prunus ilicifolia, var. integrifolia, Silva N. Am. iv. 54.) 



Leaves ovate to lanceolate, acuminate or abruptly narrowed into short points at 

 the apex, wedge-shaped, truncate or rounded at the base, with thickened revolute 



undulate entire or occasionally, especially on vigorous shoots, remotely and minutely 

 spinulose-dentate margins, glabrous, coriaceous, dark green and lustrous above, paler 

 below, reticulate-venulose, 2'-3' long, and \'-ty' wide, with stout midribs and ob- 

 scure veins, persistent; their petioles stout, yellow, ^'-^' long. Flowers appearing 

 from March to June, about \' in diameter, on slender pedicels from the axils of 

 acuminate caducous bracts, in crowded many-flowered glabrous racemes 3'-4' long; 

 calyx-tube cup-shaped, orange-brown, the lobes acute, apiculate, reflexed after the 

 flowers open, deciduous, about one third as long as the obovate petals rounded and 

 undulate above and narrowed below into short claws; stamens slightly exserted, with 

 incurved filaments and small yellow anthers; ovary raised on a short stipe, the style 

 bent near the apex and terminating in a large orbicular stigma. Fruit ripening late 

 in the autumn, on stout pedicels, in drooping few-fruited racemes, subglobose to short- 

 oblong, dark purple or nearly black at maturity, 1'- 1^' in diameter, with thick lus- 

 cious flesh sometimes \' thick, and easily separable from the ovate to obovate slightly 

 compressed thin-walled stone about f ' long, pointed at the apex, pale yellow-brown, 

 conspicuously marked by reticulate orange-colored lines, and by 3 dark bands radi- 

 ating from the base to the apex along one suture, and by a single narrow line on the 

 other suture. 



A bushy tree, sometimes 25-30 high, with one or several stout erect or spread- 

 ing stems l-3 in diameter, spreading branches forming a broad compact head, 

 and stout branchlets light yellow-green when they first appear, becoming light and 

 ultimately dark reddish brown, and much roughened by the large elevated leaf-scars. 



