486 PROCEEDINGS OF THE AMERICAN ACADEMY. 



ular-puberulent, 2 to 3 cm. long, naked or bearing a single minute lance- 

 olate bract; involucral scales appressed, imbricated in about 5 series, 

 from ovate to linear obtusish, striate, the outer herbaceous-tipped, the 

 inner often purplish ; achenes columnar, 2.5 mm. long, minutely rough- 

 ened or hispid ; pappus bright white, not copious, 7 mm. in length : 

 corollas in a dried state cream-colored. — Collected by C G. Pringle in 

 a harranca near Guadalajara, Jalisco, 1 May, 1894, no. 5885a. Type 

 in herb. Gray. Near B. floribunda, Gray, but heads fewer and consid- 

 erably larger: leaves subentire and of different contour. 



Brickellia hebecarpoides. Erect herb, seemingly perennial but 

 root not seen ; stem straight, terete, striate, glandular-pubescent, copiously 

 branched above : leaves opposite (the upper with a slight tendency to be 

 alternate), ovate to ovate-oblong, acute or obtuse, membranaceous, finely 

 and regularly serrate (the rameal entire or nearly so), rounded or ab- 

 ruptly acuminate at the 3-5-uerved often oblique base to the slender 

 petiole, puberulent above, glandular-puberulent beneath, both surfaces 

 green, the lower scarcely paler; blanches slender, spreading, leafy: 

 peduncles solitary in or usually a little above the forks of the 

 branches, 1 to 2.5 cm. long, filiform, ascending or erect, glandular-pubes- 

 cent, bractless; involucre 1.2 cm. long, campanulate, its outer bracts 

 lance-oblong, acute, glandular-puberulent, herbaceous or at least herba- 

 ceous-tipped, half to two thirds the length of the lance-linear attenuate 

 striate often purplish inner bracts ; flowers about 30: corolla 1.3 cm. 

 long, slender, glabrous, purple-tinged at least near the limb : achenes 

 short, only 2 mm. in length, minutely pubescent; style-branches orange, 

 strongly clavate. — Collected by C. G. Pringle in a barranca near 

 Cuernavaca, State of Morelos, Mexico, altitude 1,540 m., 24 June, 1896, 

 no. 7332. Type in herb. Gray. This species is related to B. hebecarpa, 

 Gray, but differs in its scarcely pubescent achenes aud much longer 

 Outer involucral scales, as well as in other ways. 



Brickellia petrophila. Compact shrub, 3 to G dm. high ; stems 

 branched from near the base; branches curved-ascending, becoming 

 erect, gray or lightish brown, covered with a fine spreading pubescence 

 i^ting of minute gland-tipped hairs and longer non-glandular hairs, 

 the latter readily distinguishable to the unassisted vision: leaves oppo- 

 site, small, reniform, ovate, crenate, obtw-c broadly and shallowly cordate 

 at tie- base, 7 to 10 (rarely 2.S) mm. long, 1 to 3 cm. broad, somewhat 

 rugose above, finely pubescent or even tomentulose upon both surfaces, 

 but scarcely or not at all canescent: heads Bubsessile, terminal on short 

 or more elongated branchlets either forming a cylindric racemiform or a 



