142 LEAFLETS. 
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. RAcEMULOSA. Dark brown branches obscurely puberulent 
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 12 
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 micropylia 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. 
Schmaltsia, 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 Schmaltsia 
proper, while also well represented in the deserts, is never 80. 
