Bulletin University of New Mexico—No. 49 
S. Amyepatores, Anders. (Peach-leaved Willow.) 
Leaves lanceolate, 2 to 4 inches long; with a long 
slender point, pale beneath, on slender petioles closely 
serrate with teeth bent in. Stipules deciduous early. 
Sand dunes t oward Isleta. 
S. nigra, Marsh. (Black W. ). Leaves narrowly 
lanceolate with very long curved tip; stipules large and 
persistent. Near streams of water in the Sandia Mts. 
S. tonerrot1a, Long-leaved W.) 
Leaves linear-lanceolate, 3 to 4 in. long and 1-12 to 
1-2 in. broad, tapering at each end, (as neither of the 
preceding species do.) Stipules small, decidious. The 
leaves have only a few teeth which project. Along the 
Rio Grande among the cotton woods. 
Porvutus, L. (Poplar, Aspen.) 
Besides our three native species the following are 
planted in the valley; the tall-tapering (conical-shaped ) 
Lombarda Poplar from Europe is often planted along 
drives and the Silver Poplar with leaves very bright 
green but silvery beneath. S. E. of the Dining Hall, 
on the Campus and places in the valley. Spreads from 
roots. 
P. BatsaAmIFeRA, L., and its var canpicans. (Bal- 
sam P. Balm of Gilead), with very large sticky buds, 
heart shaped leaves, serrate, whitish beneath, 1-2 to 2 
in. long. A fine tree of this species overhangs the east 
end of the viaduct over the railroad on Iron Ave. 
P.moniuirera, Art. The Cototn-wood of the East 
with broadly deltoid le aves is occasionally planted. 
Leaves broad, cordate. 
Pod large, Toate alone the Rio Grande,, 
P. FREMONTI. 
Pod small, grows high up in ‘the Canons of Mts. 
- - P. TREMULOIDES. 
Leaves ade iaaccoliite: grows low down in the Canons, 
: - . : P. ANGUSTIFOLIA. 
P. rremonti Watson, Var (?) Wistizent. (Val- 
ley Cotton-wood.) A good sized tree with cracked 
bark; leaves broadly deltoid or somewhat kidney 
shaped, broader than long with acuminate apex, 4 to 
12 teeth on each side, petioles 1 to 3 in. long. Pod 1-3 
to 1-2 in. long. Composes the forests along the Rio 
Grande and is common along the acequias and other 
places in the valley, and commonly planted. 
P. TREMULOIDES, Mx. (American Aspen, Quaking 
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