Robinson and Greenman—Mexican Plants. 155 
the uppermost, ovate, acute or somewhat acuminate, cordate, obso- 
entire, near glabrous, but slig papillose-scabrous, and 
almost lucid above, pubescent and not paler beneath, obtusish or 
Scarcely acute at the bas to 4 inches long, 15 to 16 lines 
| broad ; petioles densely pubescent, 3 lines in length: inflores- 
tow 
| prenensits, and silky-ciliate.—Collected by C. G. Pringle, in La 
| 6024) Cafion, Oaxaca, altitude 4,000 feet, 2 November, 1894 (No. 
Encerta (§ GER#ZA) RHOMBIFOLIA. Decumbent, densely pilose- 
_ (except the reduced uppermost) opposite, rhombic-ovate, acutish, 
harsh in texture, scabrous and tuberculate-hispidulous above, 
_ Middle, 3-nerved from above the base, 2 inches long, 12 to 15 
p lines broad, narrowed in the upper leaves to a sessile somewhat 
_ amplexicaul base, the lower short-petioled: inflorescence loose 
a eads half inch in diameter, short-peduncled, borne 
mose groups, 2 to 5 together at the ends of the 
i) hes: scales of the involucre 2—8-seriate, oblong- 
_ ‘anceolate, attenuate, grayish hirsute, the outer shorter: rays 8, 
_ Yellow, 3} lines long: achenes flattened, appressed-pubescent, cil- 
_ jate on the edges; awns 2, with intermediate scales.—Collected 
| sby _C. G. Pringle, on dry calcareous hills, Las Sedas, Oaxaca, 
_ altitude 6,000 feet, August, 1894 (No. 4813). 
EPTOSYNE Prineter. Rootstock short-oblong, thickish and 
_ Woody ; stems several, decumbent, simple and leafy nearly to the 
Middle, a foot or more high, striate-angulate, puberulent below: 
