ROBINSON, —- SPERMATOPHYTES OF MEXICO, 485 
13 mm. long, glandular and very viscid, covered with extraneous particles ; 
involucre turbinate-campanulate; the scales very unequal, much imbri- 
cated, pluriseriate, the outer ovate-oblong, the inner oblong, subscarious, 
striate, all obtuse or rounded at the apex, glabrous or slightly glandular, 
viscid: corolla glabrous, white, 2.3 mm. long; the proper tube short, much 
exceeded by the scarcely enlarged cylindric throat: achenes nearly black, 
columnar, hispidulous on and between the angles; pappus bright white, 
a little shorter than the corolla. — Z. pycnocephalum, Coult. in J. Don- 
nell Smith, Enum. Pl. Guat. iv. 75 (1895), as to no. 3397, not Less. — 
Collected by Heyde & Lux at Chicamdn, Department Quiché, Guate- 
mala, altitude 1,230 m., April, 1892, no. 3397 of Mr. J. Donnell Smith’s 
Guatemalan sets. Type in herb. Gray. To be distinguished from Z. 
pyenocephalum, Less. by its viscidity, quite different and much more 
imbricated involucre, etc., and from E. anisopodum, described above, by 
its viscidity, different leaf-form, rounded instead of.acute or acuminate 
involucral scales, ete. 
Brickellia amblyolepis. Stem large, fistulose, 2 to 2.5 m. high, 
glabrous, purple mottled with green: leaves whorled below, opposite 
above, alternate in the upper parts of the open inflorescence, ovate, acu- 
minate, 3-ribbed from the cuneate entire base, coarsely serrate from 
below the middle to the acuminate apex, green and glabrous above, paler 
and finely pubescent upon the veins beneath, 7 to 13 em. long, half as 
broad ; petioles 1.3 to 3.4 em. long: heads rather large, broader than 
high, nodding in an open leafy panicle; pedicels bearing a few linear to 
Spatulate bractlets ; scales of the involucre in 3 to 4 series, spatulate- 
oblong, rounded at the apex, green and nearly glabrous except upon the 
deep purple tomentulose margin: corollas greenish, 5 mm. long, glabrous, 
nearly equalled by the rather copious purple-tinged pappus: achenes 
(immature) 5 mm. long, minutely pubescent; styles strongly clavate, 
bright orange turning to brown. — Collected by C. G. Pringle on moun- 
tains above Iguala, Guerrero, Mexico, 4 October, 1900, no. 8415. A 
stately species 2 to 3 metres high, not very closely related to any hitherto 
described. Type in herb. Gray. 
Brickellia cardiophylla. Herbaceous; stem terete, glandular- 
pubescent; branches opposite, widely spreading: leaves sie ap 
acute or obtusish, entire or nearly so, broadly cordate at the base, m 
branaceous, 3-nerved, minutely glandular-puberulent, green upon both 
surfaces, scarcely paler beneath, 5 to 6 cm. long, nearly as broad ; peti- 
oles slender, 2 to 3 cm. long: heads wishulen near the ends of the~ 
branches, campanulate, 1 to 1.5 cm. in diameter; pedicels filiform, gland- 
