68 ROBINSON. 



49. E. CooKii Robinson (p. 9). Shrubby, densely spreading- 

 villous, the hairs at first long, soft, and under a lens beautifully purple- 

 jointed; stems round, purple, the internodes elongated, sometimes 

 13 cm. or more in length; branches spreading, usually curved upward, 

 bearing about 2 pairs of leaves and terminating in a mostly dense 

 trifid corymb; leaves ovate, acuminate, crenate-serrate except at the 

 rounded, or subcordate base, dull-green and sparingly pubescent 

 above, slightly paler, sordid-villous and somewhat glandular-atomif- 

 erous beneath, about 5 cm. long and 3-3.4 cm. wide; petioles 1.2-2 

 cm. long; corymbs trifid, dense; pedicels short, woolly, with long soft 

 brown and jointed hairs; heads crowded, about 20-flowered, about 

 7 mm. high, 4 mm. in diameter; involucres campanulate, about 3- 

 seriate, substramineous, the scales about 19, lance-oblong, acute, 

 mostly 2-ribbed and 3-veined, dorsally pubescent, the innermost 

 narrower, less pubescent, obtusish or rounded at the more or less 

 scarious summit; corollas apparently white, hispidulous on the limb, 

 otherwise essentially glabrous, about 3.8 mm. long, the proper tube 

 only 0.7-0.8 mm. long, much exceeded by the cylindrical throat; 

 achenes dark brown, nearly black, 1.5 mm. long, glabrous; pappus- 

 bristles about 40, clear white, scarcely roughened. — ^Cuzco: in the 

 Lucumayo Valley, alt. 1800-3600 m.. Cook & Gilbert, no. 1352 (U. S., 

 phot. Gr.). Junin: Andamarca, Mathews, no. 1126 (K., phot, and 

 fragm. Gr.), a doubtful form with shorter pubescence and more dis- 

 tinctly cordate leaves, with crenate rather than serrate margins. 



50. E. MARGINATUM Poepp. Climbing shrub; branches round, 

 slender, divaricate as thej^ leave the stem, but curved-ascending, very 

 finely puberulent; internodes 4-7 cm. long; leaves opposite, lance- 

 ovate, acuminate, serrate, except at the rounded base, 3-4.5 cm. long, 

 1-2.4 cm. wide, membranaceous, 3-nerved essentially from the base, 

 glabrous except for a delicate puberulence on the nerves beneath; 

 the margin narrowly revolute and slightly indurated; petiole slender, 

 5-10 mm. long; panicle opposite-branched, leafy-bracted, ovoid, 

 open, about 4 dm. long; heads small, about 15-flowered, slender- 

 pedicelled, in convex fairly dense terminal corymbs on the branchlets 

 of the finely puberulent composite inflorescence; involucral scales 

 about 3-seriate, narrowly oblong, stramineous, the inner glabrous, 

 obtuse, the outer pubescent: corollas white; achenes glabrous. — 

 Poepp. in Poepp. & Endl. Nov. Gen. ac Spec. iii. 54 (1845). — Huan- 

 uco: in bushy places at Cassapi, August, Poeppig, no 1254 (Hofmus. 

 Vienna, phot. Gr.). This species has somewhat the habit of an 

 Ophryosponis, into which genus it would fall should the anther-tips 



