THE PLUMS OF NEW YORK.. 49 



7, PRUNUS MONTICOLA K. Koch 

 I, Koch, K. Ind. Sent. Hort. Berol. App. 1854. 2. Schneider Handb. Laubh. 1:632. 1906. 



Plant shrub-like, slender, upright, scarcely thorny, new wood more or less olive- 

 brown. Buds short, ovate; leaves roundish or cuneiform, base oblong-ovate, point 

 drawn out, main nerves over six on both sides, the serrations coarse and uniform in 

 size, always glabrous. Flowers mostly in twos; borne on long, slender peduncles; 

 calyx usually glabrous; petals white, odor slight; stamens thirty or more. Fruit 

 small, roundish-oblong, red; stone ovoid, pointed at one end, somewhat turgid. 



Prunus monticola is described by the above authors as a shrub-like 

 pltim from Asia Minor and Armenia having, so far as can be learned from 

 European texts, little or no hortictiltural value. The herbarium specimens 

 seen by the writer indicate that this species is closely related to Prunus 

 cerasifera. The description of the species is abbreviated from Schneider. 



8. PRUNUS TRIFLORA Roxburgh 

 I. Roxburgh Hort. Bengal 38. 1814. 2. Ibid. Fl. Indica 2:501. 1824. 3. Schneider Handb. 

 Laubh. 1:627. 1892. 4. Bailey Cornell Sta. Bui. 62. 1894. 5. Waugh Plum Cult. 42. 1901. 

 P. domestica. 6. Maximowicz Mel. Biol. 11:678. 1883. 

 P. hattan Tamari. 7. Bailey An. Hort. 30. 1889. 



P. communis. 8. Forbes and Hemsley Jour. Linn. Soc. 23:219. 1886—88. 

 P. japonica of horticulturists (not P. japonica of Thunberg). 



Tree twenty to thirty feet in height, vigorous; trunk six to twelve inches in diam- 

 eter, straight ; bark thick, rough, numerous corky elevations especially on the branches, 

 reddish or cinnamon -brown, peach-like; branches long, upright-spreading, much forked, 

 brash and often splitting at the forks; branchlets thick, straight, glaucous and glabrous, 

 at first light red, growing darker the second year; lenticels few or many, usually small 

 but conspicuous, light in color. 



Winter-buds small and obtuse, free or appressed; leaves borne abundantly, small 

 or of but medium size, oblong-obovate, point acuminate or abrupt, prominent, base 

 rounded, firm, thin, membranaceous, margins finely and closely serrated, sometimes 

 in two series, teeth usually glandular; upper surface bright green, glabrous, lower sur- 

 face dull, whitish, glabrous or slightly pubescent on the veins; veins pronounced; 

 petioles one-half inch in length, stoutish, tinged with red; glands few or several, usually 

 globose, greenish; stipules lanceolate, very narrow, one-half inch long, caducous. 



Flowers expanding early, before, with or sometimes after the leaves, first of the 

 plum blossoms to appear, very abundant, three-quarters of an inch in diameter; usually 

 three springing from each flower-bud, often in dense clusters on lateral spurs and lateral 

 buds on one-year-old wood; calyx-tube green, glabrous, campanulate or obconic; calyx- 

 lobes acute to obtuse glandular-serrate, erect, glabrous or pubescent; petals white, 

 oval, entire or crenate, with a short claw or tip; stamens about twenty-five, shorter 

 than the petals; anthers yellow, sometimes tinged with red; pistils glabrous, longer 

 than the stamens; pedicels one-half inch long, slender. 



