NEW CHORIPETALOUS EXOGENS. 21 
AMELANCHIER PRUNIFOLIA. Stems clustered and bushy, 
6 or 8 feet high, the branches stout and rigid, with an ashy 
bark: leaves small (the largest only an inch long), coria- 
ceous, pale and glaucescent, glabrous on both faces or nearly 
so, mostly oblong or elliptie and entire, some obovate- 
oblong and with a few teeth across the obtuse apex, all on 
slender petioles of 3 inch: fruits few, in a pendulous corym- 
bose raceme, the pedicels an inch long or more and very 
slender: segments of the calyx narrowly triangular-lanceo- 
late and elongated, in the reflexed fruiting condition reach- 
ing almost to the base of the fruit: flowers not seen. 
On sage plains and low foothills about Mancos, Colorado, 
July, 1898, Baker, Earle and Tracy (n. 665). Related to the 
far northwestern A. pallida, and equally xerophilous; but 
quite distinct by its narrow foliage of different outline, and 
by its long narrow calyx-teeth. 
AMELANCHIER VENULOSA. Habit of the preceding, and 
with similar pale bark, but leaves constantly broad-obovate, 
entire below the middle, sharply serrate at the obtuse apex, 
pale beneath, greener above, conspicuously feather-veined, 
the veins close, in about 8 pairs; pedicels and very short 
petioles white with a fine tomentum, this reappearing on 
the triangular-lanceolate segments of the calyx, but the full- 
grown fruit nearly glabrous; corymbs short, few-flowered. 
This is known to me only as collected long ago by Mr. 
S. B. Parish, at Cushenberry Springs, in southern California. 
I had referred it to A. pallida at first, notwithstanding that 
its foliage is very different, not being pale except beneath, 
and being of different outline. But the obvious fine and 
close venation of the leaves is in marked contrast with the 
approximate veinlessness of other eoriaceous-leaved desert 
species of this genus. 
