134 LEAFLETS. 



foliage less densely velvety on both faces ; terminal leaflet 3-lobed, 

 the broad obtuse lobes coarsely crenate or dentate : bracts of 

 the short spikes not more tomentose than in other species, even 

 partly glabrous : fruits large, not strongly hirsute. 



Hills and low mountains of eastern and southern New Mexico, 

 thence across to northeastern Arizona ; first collected on Emory's 

 expedition. Mr. Wooton has distributed specimens as " Rhus 

 Emoryi n. sp.," but I do not find any printed character, though 

 such may possibly exist. 



S. OXTACAKTHOIDES. Low, intricately compact with many 

 slender recurved branches, the older pale ash-gray and glabrous, 

 the growing ones minutely puberulent : leaves small, sub-coria- 

 ceous, glabrous except a few hairs along the veins on both faces ; 

 terminal leaflet 1 inch long, broadly cuneate-obovate in outline, 

 often subtruncate at summit and there deeply 3-lobed, the lobes 

 entire and subequal, or else the middle one exceeding the other 

 two and 3 to 5-crenate, lateral leaflets not much smaller, usually 

 3-lobed, sometimes entire, the whole margin in all narrowly 

 revolute : spikes 1 or 2, small, both in the axil of the upper- 

 most leaf. 



Known only in one specimen, in my own herbarium, collected 

 by myself on some desert hillside back of Grand Junction, 

 Colorado, 27 Aug. 1896. The leaflets imitate the leaves of a 

 common form of Crataegus Oxyacantha. 



S. PULCHELLA. Branches rigid, straight, Hoary for several 

 seasons with dense minute downiness ; foliage small, soft-pubes- 

 cent on both faces, dark green above, light beneath ; terminal 

 leaflet seldom an inch long, abruptly cuneate from below the 

 middle, otherwise deeply 5-lobed, the lobes rarely entire, usually 

 with 2 to 5 secondary rounded lobes ; laterals half as large, 

 mostly with 5 obtuse lobes : spikes small, sessile near ends of 

 branches: bracts more or less tomentulose on the back: fruit 

 small, setulose. 



Toward the Kio Limpio, western Texas, C. Wright, 1852, 

 n. 1342 as in U. S. Herb.; also later from the same general 

 region by Reverchon, Heller, Earle & Tracy. 



