124 LBAFLHTS. 



of ovate circumscription above an abruptly tapering base, usu- 

 ally deeply and inciseiy 3-lobed, the lobes sinuate-lobed, the 

 pair of leaflets little smaller, inequilateral, mostly 2-lobed on 

 the broader side only, rarely 3-lobed, all of a rich deep green 

 above and sparsely strigulose, beneath pale and with an obscure 

 scattered less strigose superficial pubescence, but all the veins 

 distinctly hirtellous : inflorescence a well developed panicle in 

 each axil, much shorter than the leaves and standing out from 

 them almost divaricately : fruit unknown. 



Climbing or trailing our trees shrubs and volcanic rocks at 

 Nombre de Dios, 40 miles south of Durango, Mexico, as collect- 

 ed by Dr. Edw. Palmer, April, 1896 ; distr. n. 106. 



T. BITEKKATUM. Allied to the last, more slender, the bra,nch- 

 eis puberulent and striate ; leaves as large, somewhat biternate, 

 the terminal leaflets 3-parted and the divisions all deeply and 

 sinuately 3 to 5-lobed, even the pair nearly as much subdivided, 

 both faces minutely strigulose, the veins beneath minutely hir- 

 tellous : panicles very small, few-fruited the fruits small, de- 

 pressed-globose, only faintly striate. 



Eagle's Nest on the Eio Grande, western Texas, V. Havard, 

 in D. S. Herb., sheet 156,164; no date given. Very beautiful 

 almost twice-ternate and compound-looking foliage. 



T. VERR0COSUM. Rhus verrucosum, Scheele, Linnaea, xxi. 592. 

 A lobed-leaved species of western Texas, evidently good not- 

 withstanding that the warts on the leaves of some specimens, 

 which suggested the name, are accidental. 



T. PUMiLTJM. Dwarf, erect, simple or rarely with a short 

 branch or two, only 6 or 8 inches high, striate-angled, cinereous 

 and glabrous at maturity : leaflets ovate, coarsely toothed, acute 

 or abruptly acuminate, pubescent on both faces but only on the 

 primary veins and toward the margin: panicles numerous, small 

 and quite simple, not rarely reduced to a mere raceme, in fruit 

 not erect but decidedly nodding: fruits large for the plant, 

 exactly spherical, the epicarp greenish-white, scarcely polished, 

 not obviously either striate or wrinkled. 



In higher mountains of northern Arizona not far from Flag- 

 staff, June, 1898, D. T, MacDougal, n. 28 as in U. S. Herb,, 



