142 LBAflB'Tg. 



1-toothed on each side, the terminal tooth often larger and noW 

 and then tridentate ; laterals half as large, cuneate-obovate, 

 3-toothed : fruit small, globose, scantily and shortly hirsute. 



Baker, Earle & Tracy's 525 from Durango, Colo, 1898 ; Baker's 

 456 from Arboles, 1899, all as in U. S. Herb. ; said to be com- 

 mon in that part of southwestern Colorado; and there is a 

 fragment from Colorado Springs, by Knowlton 1896, that does 

 not differ essentially. 



S. EACEMULOSA. Dark brown branches obscurely puberulcnt 

 even to the third season, growing twigs minutely but densely 

 pubescent : foliage of a rich dark green above, whitish-veiny 

 and minutely granular, beneath glaucescent, the veins and 

 margins pubescent; terminal leaflet obovate-rhomboid, 1 to IJ 

 inches long, obtusely 3-lobed near the summit, or coarsely 2 or 

 3-crenate on either side and less obtuse : flowers clustered in 

 short racemes on slender twigs and appearing in late summer 

 after the maturity of the foliage, all on elongated and even pen- 

 dulous pedicels that are hispidulous toward the base, glabrous 

 under the flower, bracts transverse-rugulose on the back and 

 minutely setulose. 



Near Fort Huachuca, Ariz., Aug. 1394, Gen. T. E. Wilcox, 

 n. 378 as in U. S. Herb. Apparently the same is a shrub of 

 Chihuahua, by E. W. Nelson, from below Cacheco, 24 Aug., 

 1899, with immature fruit distinctly pedicellate and drooping. 

 It is Nelson's 6234 as in U. S. Herb. 



When Dr. Engelmann published Rhus micropylla he thought 

 " it a true Lobadium with pinnated leaves ; " and that is what 

 any other would be likely to say who might so intently regard 

 its amentaceous inflorescence and precocious flowering as to 

 overlook those several marked characters by which, over and 

 above the pinnate foliage, this differs from Lobadium, i. e. 

 Schmaltzia. Habitally it is a rigid, divaricately short-branched 

 naked looking shrub, a desert growth, of aspect in perfect keep- 

 ing with that of each of a considerable list of small-leaved half- 

 spinescent shrubs of several families and genera ; but Schmaltzia 

 proper, while also well represented in the deserts, is never so. 



