ROBINSON AND GREENMAN. — MEXICAN PLANTS. 391 



diameter, covered with a light-colored cracked cortex ; branches slen- 

 der, flexuous, ascending, a span in length : leaves lanceolate in outline, 

 pinnatifid, plicate, prominently veined beneath, 4-6 lines long, cuneate 

 at the base ; the tooth-like segments short, obtuse : peduncles axil- 

 lary, 1-2 inches in length; spikes oblong, dense, G-10(-22) lines 

 long, 4 lines in diameter : bracts ovate-lanceolate, acute, ciliated, and 

 pubescent, 1£ lines long: calyx 2-parted, persistent ; segments entire 

 or minutely 2-toothed : corolla purplish, much exserted, 2^ lines long, 

 5-lobed ; the ventral lobe somewhat larger than the others : stamens 4, 

 in pairs ; the ventral ones with slender erect appendages springing 

 from the connective and exceeding the anthers in length : style short ; 

 stigma strictly simple, oblique. — Collected in wet alkaline soil, Mapimi 

 Desert, Durango, 25 November, 1893 (no. 4625). — An anomalous 

 species with the 5-parted corolla and appendaged anthers of Verbena, 

 but the 2-cleft calyx and entire oblique stigma of Lippia. 



Cunila pycnantha. Stems slender, branching, herbaceous, or 

 slightly ligneous, tomentulose : cortex light brown, peeling off. leaves 

 ovate-lanceolate, long-acuminate, 1^-2^ inches long, nearly half as 

 broad, rounded or subcordate at the base, short-petioled, serrate except 

 at the base and apex, smooth and dull green above, much paler and 

 glaucous beneath, somewhat tomentose upon the midrib and petiole : 

 flowers very numerous, small, not at all verticellate, but disposed in 

 dense terminal capitate cymes : corolla pubescent upon the outer sur- 

 face, 2 lines long, little exceeding the pubescent calyx. — Collected 

 on Nevado de Colima, Jalisco, 7,000 feet, 22 May, 1893 (no. 5511). 

 Well characterized by the dense terminal inflorescences, which give 

 the plant a Eupatorium-like habit. 



Salvia Pringlei. Shrub, 3-6 feet high, stems essentially smooth, 

 finely striate, branching : leaves ovate, shortly acuminate, rounded or 

 abrupt at the base, serrate, a little over 2 inches in length, 1^—2 inches 

 in breadth, glabrous upon both surfaces ; petioles 4-6 lines in length : 

 spikes dense, terminal on the branches, 2-3 inches long ; bracts ovate, 

 acuminate, ciliated, and somewhat pubescent, 6 lines long, rather per- 

 sistent : calyx tubular, 8 lines long, ciliated, pubescent within, 10- 

 ribbed, becoming corrugated and compressed at the throat ; the upper 

 lip ovate, acuminate, entire ; the lower lip bifid : corolla rose-purple, 

 1^ inches long; the upper segment very pubescent, £ mch in length , 

 the lower spreading, about equal in length. — Collected under cliffs of 

 the barranca of Tequila, 2 October, 1893 (no. 4564). 



Euphorbia delicatula, Boiss. This species was described from 

 a Mexican specimen in the herbarium of Pavou, but without exact 



