GREENMAN,— MEXICAN PHANEROGAMS, 575 
Dr. Rose in the Sierra Madre, State of Tepic, nos. 1984, 3418. The 
following supplementary characters may be appended: stems herbaceous 
from a thick perennial base, 5 to 6 dm. high, simple or sparingly branched : 
leaves usually alternate, not unfrequently opposite or at least subopposite. 
E. leptodictyon closely resembles #. strictum, Gray, but may be distin- 
guished readily from it by the fewer broader and more blunt bracts of the 
involucre, and by the larger flowers. 
Grindelia glandulosa. Apparently biennial: root somewhat ob- 
conical : stems subcespitose, erect, simple or sparingly branched, 2 to 3 dm. 
high, glandular-pubescent with spreading hairs intermixed: basal leaves 
spatulate, attenuate at the base, including the petiole 6 to 10 em. long, 
1 cm. or less in breadth; stem leaves narrowly oblong or oblong-lance-- 
olate, slightly broadened at the sessile subclasping base, acute, regularly 
and rather closely serrate, glandular-pubescent upon either surface, 2.5 to 
5 em. long, 6 to 10 mm. wide; the uppermost leaves gradually reduced 
and more or less acuminate: heads terminating the stems, solitary, ex- 
cluding the rays 1.5 to 2 cm. in diameter; involucral scales strongly 
imbricated, purplish, lanceolate, acuminate, terminated by an acutish 
glandular-viscid tip; margins thin, purplish, suberose, glandular-ciliate, 
the outer somewhat narrower: ray-flowers 20 to 85; ligules oblong- 
Spatulate, including the tubular portion nearly 2 cm. long: pappus usu- 
ally bisetose, rarely trisetose or sometimes with a single awn, fugaceous : 
achenes smooth. — Collected by C. G. Pringle in wet meadows of the 
Sierra de Pachuca, State of Hidalgo, altitude 3,000 m., 13 August, 1898, 
no. 6962, Seemingly a very distinct species, readily recognized by the 
glandular character of the pubescence throughout the entire plant. 
Baccharis macrocephala, Scu. Bre. in herb. Gray. Perennial, 
glabrous throughout: stems somewhat striated, covered with a grayish 
bark: leaves scattered, sessile, spatulate-lanceolate, 2 to 3 cm. long, 3 to 
6 mm. broad, acute, often with a sharply recurved apex, entire and usually 
hispidulous on the margins or with a few remote horizontally spreading 
teeth near the apex, glandular-dotted on either surface and more or less 
viscid, 1-3-nerved, the leaves of the flowering branches much smaller and 
more or less squarrose-imbricated: inflorescence paniculate-virgate, leafy: 
heads terminating the branches of the inflorescence, those of the fertile 
plant nearly or quite 1.5 cm. high, many (90-100)-flowered : involucral 
scales unequal, 6-7-seriate, imbricated, lance-linear with a dark green 
midnerve, acute, glabrous, margins scarious and often slightly erose, the 
inner about 7 mm. long, the outer shorter : pappus white or slightly tawny, 
nearly or quite 1 cm. in length; achenes glabrous: heads of the staminate 
