650 AMYGDALACEAE 
times a green above, pale be neath, cuneate or gradually narrowed to 
the base: flowers usually 3 together: sepals ue obtuse, glabrous, minutely 
endum. on the Bas gins: dis about 6 ong: drupe globose or sub- 
globose, 10-15 mm. in diameter, black, eN Loo. stone acute.—(DwanRr- 
Y:)— Mist o or m woods, various provinees N of Co tal Plain, N. C. 
to > Minn. and N. H.—Fr. ripe 
. P. Cerasus L. Small tree: leaf-blades m oval-ovate, or ovate-lanceo- 
iie, 4-11 em. long, abruptly acute or acum , finely serrate-dentate, gla- 
brous, resinous when young: corolla 1.5-2.5 e om poor drupe nearly d 
—10 mm. in di r bl 
stone 
g .— (SOUR-CHERRY. ORELLO-CHERRY.)—Woods and e -TOWS, Sou 
provinces, N Fla. to Colo. and N. H. Nat. of Eu.—Fr. ripe sum 
13. P. Avium L. Large tree leaf-blades ovate to oval or oval-ovate, 5-10 
em. long, a short- -acuminate, coarsely te) serrate, pubescent beneat 
sometimes only on the veins: corolla 2.5-3 em. broad: drupe ovoid-globose, 8-10 
mm. in diameter, not acid, usually ees. SS globul WEET-CHERR 
"prem )—Thiekets, fence- -rows, and edge is of code) REN provinces, N 
Fla. to Mo. and Ont. Nat. of Eurasia.—Fr. ripe su 
5. PADUS Borckh. Shrubs or trees. Md deciduous, manifestly im- 
pregnated with prussie acid. ers in terminal racemes, white. Hypan- 
thium green. Sepals relatively large fes rounded. Drupe with a juicy 
'exocarp.—About 15 1d natives of the north temperate regions.— WILD 
CHERRIES. CHOKE CHERRIES. 
Sepals deciduous: leaf-blades mostly serrulate with very dci s 
nana. 
Sepals. Bo leaf-blades mostly serrulate with relatively 
coarse t 
Young shoots, raceme-rachis, and pedicels glabrous. 2. P. virginiana. 
Young shoots, raceme-rachis, and pedicels pubesce nt. 
Leaf- blades finely and rather sparingly pubescent be- 
rate and eL with a . P. Cuthbertii. 
Drupe red: leaf-blades D ay obovate, blunt. 
Du purple: leaf-blades ovate or elliptic, acute or 
cuminate. . P. alabamensis. 
Leaf-blades densely and dr OMEN with 
tawny or rufous tomentum, not eau 9. P. australis. 
TP. nana (Du Roi) Roem. ae 
raceme rather lax, 8-15 g 
flexed, often ovate, glandular-margined 
tals 3—4 ong: drupe globose, 8—10 
m 
ock woods, nd- 
dunes, and river-banks, various provinces, 
Ga. to Tex., Man., and Newf.—Spr 
2. P. virginiana (L.) Be Tree with 
ascending branches, beco ing 35 m. tall: 
leaf-blades firm, elliptie, varying to obovate, 
or elliptic- -lanceol ate, 5-15 em. long (coria- 
ceous, often lanceolate, whitish beneath, coarsely serrate, and with the racemes 
few- flower ed and div vergent in P. virginiana montana—on mtn. tops), acumi- 
