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 4 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 barranca near Guadalajara, Jalisco, 1 May, 1894, no. 5889a. 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-nerved often oblique base to the slender 
petiole, puberulent above, glandular-puberulent beneath, both surfaces 
green, the lower scarcely paler; branches 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, brattless; involucre 1.2 em. 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 orang® 
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. hebecarp® 
Gray, but differs in its scarcely pubescent achenes and much longer 
outer involucral scales, as well as in other ways. 
Brickellia petrophila. Compact shrub, 3 to 6 dm. high; “ 
branched from near the base; branches curved-ascending, becoming 
erect, gray or lightish brown, covered with a fine spreading pubescence 
consisting 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, obtuse, broadly and shallowly cordate 
at the base, 7 to 10 (rarely 28) 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 subsessile, terminal on short 
or more elongated branchlets either forming a cylindric racemiform oF ® 
