ROBINSON. — SPERMATOCYTES OF MEXICO. 4S5 



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. — E. pycnocephalum, Coult. in J. Don- 

 nell Smith, Enum. PI. Guat. iv. 75 (1895), as to no. 3397, not Less. — 

 Collected by Heyde & Lux at Chicaman, Department Quiche, 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 E. 

 pycnocephalum, 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, etc. 



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 cuueate 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 cm. long, half as 

 broad; petioles 1.3 to 3.4 cm. 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 toinentulose 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. Priugle 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 ovate-triangular, 

 acute or obtusish, entire or nearly so, broadly cordate at the base, mem- 

 branaceous, 3-nerved, minutely glanduhir-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 subumbellate near the ends of the 

 branches, campanulate, 1 to 1.5 cm. in diameter; pedicels filiform, gland- 



