SEGREGATES OF RHUS. 133 



both faces ; terminal leaflet with more gradually and lefis 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, Uolo., 0. 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. suBPiJTifATA. Shrub robust and tall, with straight sub- 

 erect branches red-brown and tomentulose the first season : 

 leaves dark green above but thinly soft-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 3-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 canon of the 

 Arkansas at Canon 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 villons-strigose above, beneath canescently vil- 

 lous-tomentulose ; terminal leaflet li 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 thyrsif orm cluster : fruits 

 small, little compressed, nearly or quite glabrous. 



Valley of the Eio Grande at Mesilla, New Mexico, E. 0, 

 Wooton, 1897, n. 48 as in U. S. Herb. 



S. Emoeti. Shrub low, very stout, the branches for two 

 seasons very densely clothed with a velvety yellowish tomentum j 



