ROSACEiE 



515 



buds minute, obtuse, with chestnut-brown scales slightly ciliate on the margins, 

 those of the inner ranks becoming oblong-lanceolate, acute, glandular- serrate, some- 

 times ^' long. Bark thin, dark brown, separating into large thin persistent plates, 

 and displaying the light brown inner layers. 



Distribution. Low banks of streams in rich moist soil; Maryland and Virginia 

 to southeastern Kansas and Texas; sometimes considered a natural hybrid between 

 Prunus Americana and Prunus angustifolia. 



Prunus hortidana, var. Miyieri, Bailey (f. 425), with thicker rather duller some- 

 what obovate and more coarsely serrate leaves, is an Illinois and Missouri form or 

 perhaps a distinct species related to Prunus Americana. 



Often cultivated by pomologists in many forms of garden origin. 



4. Prunus angustifolia. Marsh. Chickasa-w Plum. 



Leaves lanceolate to oblong-lanceolate, pointed at the ends, apiculate at the apex, 

 and sharply serrate, with minute glandular teeth, glabrous or at first sometimes 

 furnished with axillary tufts of long pale hairs, bright green and lustrous on the 



upper, paler and rather dull on the lower surface, l'-2' long and ^-f wide; their 

 petioles slender, glabrous or puberulous, biglandular near the apex, with 2 conspic- 

 uous red glands, bright red, \'\' long; stipules linear or lobed, glandular-serrate, 

 y long. Flo^wers appearing before the leaves from the beginning of March at the 

 south to the middle of April at the north, \' across, on slender glabrous pedicels \'-\' 

 long, in 2 4-flowered umbels; calyx-tube carapanulate, glabrous, the lobes oblong, 

 obtuse, ciliate on the margins, with slender hairs, pale-pubescent on the inner sur- 

 face, reflexed at maturity; petals obovate, rounded at the apex, contracted at the 

 base into short broad claws, white or creamy white. Fruit ripening between the 

 end of May and the end of July, globose or subglobose, about \' in diameter, bright 

 red, rather lustrous, nearly destitute of bloom, with a thin skin, juicy subacid flesh, 

 and a turgid rugose stone compressed at the ends, nearly 1' long, more or less thick- 

 margined on the ventral and grooved on the dorsal suture. 



A tree, 15-25 high, with a trunk rarely exceeding 8' in diameter, slender spread- 

 ing branches, and bright red and lustrous branchlets glabrous or covered at first 

 with short caducous hairs, becoming in their second year dull, darker and often brown, 

 marked with occasional horizontal orange-colored lenticels, and frequently armed 



