piaiiitien 3 AMYGDALACE. - 161. 
CERASDS. 
1. St ea Flowers perfect: carpel solitary: leaves convolute in the 
ud. y 
2. Cerasus. Flowers perfect: carpel solitary: leaves conduplicate in 
the bud. 
3. Osmaronia. Flowers polygamo-dicecious: carpels 5, becoming 5 
drupes, or by abortion fewer or none. 
1 PRUNUS Juss. Gen. 341. (Pitom. Prune). 
Leaves convolute in the bud. Flowers in umbellate clusters 
from lateral buds, appearing before or with the leaves. Drupe 
ovoid, glabrous and glaucous; the thick sarcocarp pulpy. Put- 
amen (stone) bony, +mooth, compressed, acutely edged on one 
margin, grooved on the other. 
P. subcordata Benth. Pl. Hartw. 308 (?). A much branched shrub, 3- 
12 feet high, with ashy-gray bark: young branches and leaves finely pu- 
bescent, becoming glabrous: stipules narrowly-lanceolate, laciniate-den- 
tate, 1-2 lines long; leaves elliptical to ovate, cordate to cuneate at base, 
obtuse or acute, sharply and finely serrulate, about an inch long, short- 
petioled: umbel 2-4-flowered; pedicels 3-6 lines long; calyx campanulate, 
the oblong obtuse minutely dentate lobes about as long as the tube; petals 
white, obovate, rounded at the apex, 4-5 lines long by 2-3 lines broad: 
fruit 8-10 lines long, oblong, subacid. On dry rocky hills and open woods, 
Umpqua valley, Oregon, to California. 
P. Oregana Greene Pitt. iii, 21. ‘‘Evidently allied to P. subcord- 
ata, but leaves little more than an inch long, subcoriaceous, pubescent on 
both faces, in outline oval or broadly elliptic, never subcordate, commonly 
acutish at both ends, serrulate: flowers unknown: fruits in pairs or 
threes, on pedicels 6 lines long or more, densely tomentose when very 
young, more thinly so, yet distinctly tomentulose when half-grown. 
Known only from specimens collected on the Yainax Indian reservation 
in southeastern Oregon, by Mrs. Austin, in 1893. * * * ” 
2 CERASUS Juss. gen. 340. (CHERRY.) 
Trees or shrubs with alternate simple leaves that are condupli- 
cate in the bud and corymbose or racemose flowers from lateral 
buds, appearing before or with the leaves. Calyx campanulate, 
deciduous, the limb 5-parted, regular. Petals 5, spreading. 
Stamens 15-30. Ovary solitary, 1-celled, with two collateral 
pendulous ovules. Drupe globose, fleshy, destitute of bloom ; 
stone mostly globose, smooth, not prominently margined. 
§ 1. Evucrrasus T. & G. Fl. i, 409. Flowers from lateral leaf- 
less buds, appearing before or with the leaves; pedicels umbel- 
late-fascicled, corymbose, or racemose. 
C. emarginata Dougl. Hook. Fl.i, 169. Prunus emarginata Walp. 
Shrub 3-12 feet high, diffusely branched from the base and clothed throu at. 
out with a smooth shining bark: leaves oblong-obovate to oblanceolate, 
mostly obtuse, rarely emarginate, crenately serrulate, 1-3 inches long, 
with a single or a pair of glands at or above the junction of the petiole 
and blade, pubescent beneath, nearly smooth or puberulent above: inflor- 
escence pubescent; racemes few-flowered: calyx campanulate, the oblong 
obtuse lobes soon reflexed, scarcely equalling the tube, about a line long; 
tals orbicular-ovate, 2 lines long, minutely pubescent outside: drupe 3-4 
ines in diameter, dark-red, intensely bitter and astringent. Common in 
mountainous districts, Brit. Columbia to California, east of the Cascade 
Mountains. 
