SEGREGATES OF RHUS. 133 
both faces ; terminal leaflet with more gradually and less nar- 
rowly cuneate base, often 3-lobed, but lobes entire, or those on 
vigorous shoots with some secondary lobes, lateral leaflets round- 
oval, equal sided, with lateral rounded entire lobes: bracts 
tomentose: pedicels glabrous. 
From near Fort Collins, Colo., C. F. Baker, 1896, southward 
to northern New Mexico, where collected by Heller, 1897; unless 
I confuse two species, of which Mr. Baker’s fine specimens in 
my herbarium are to stand for S. Bakeri. 
S. SUBPINNATA. Shrub robust and tall, with straight sub- 
erect branches red-brown and tomentulose the first season: 
leaves dark green above but thinly sott-strigulose, paler and 
more densely pubescent beneath, with the veins hirsutulous ; 
the leaf as a whole appearing as if 5-foliolate, the terminal 
leaflet, 2 inches long, being completely divided in the middle 
into 3 segments or divisions, the leaflet as a whole deltoid, the 
terminal segment rhomboid, acute, with 2 or 3 coarse teeth on 
either margin, the lateral segments entire on the inner margin 
1 or 2-toothed on the outer; lateral leaflets broadly ovate, 1 inch 
long, equal-sided, both margins lightly sinuate-lobed: spikes 
with bracts wholly tomentose: flower and fruit not seen. 
Known only as collected by the writer, in the cafion of the 
Arkansas at Cafion City, Colo., 7 Sept. 1896; the collecting 
done hastily, the remarkable quinate character of the foliage 
not noted at that time. 
S. LEIOCARPA. Branches not slender, long and straight, 
obsoletely pubescent; twigs of the season tomentulose : foliage 
small, pale and villous-strigose above, beneath canescently vil- 
lous-tomentulose; terminal leaflet 1} inches long, abruptly 
cuneate much below the middle, incisely and deeply 3 to 5-lobed, 
the lobes obtuse, often crenate-toothed: spikes many, small, 
subsessile, forming collectively a long thyrsiform cluster: fruits 
small, little compressed, nearly or quite glabrous. 
Valley of the Rio Grande at Mesilla, New Mexico, E. O. 
Wooton, 1897, n. 48 as in U. S. Herb. 
S. Emoryr. Shrub low, very stout, the branches for two 
seasons very densely clothed with a velvety yellowish tomentum ; 
