54 ROBINSON 
base, about 1 dm. long, half as wide, sharply serrate (teeth 1-1.8 mm. 
high, 2-4 mm. broad at the base), glabrous on both surfaces, firmly 
membranaceous, paler beneath, not punctate, reticulate-veiny but 
the veins immersed or scarcely prominulent; a pair of intramarginal 
nerves leaving the midnerve close to the base, these followed by a 
more prominent pair arising from the midnerve 2-4 mm. above the 
base; petiole about 2 cm. long, dark-purple, flexuous; corymbs ter- 
minal, strongly convex, compound, about 1 dm. in diameter; heads 
essentially as in the preceding. 
Tarisa: Prov. Arce: Padeaya, alt. 2300 m., 12 Nov. 1903, Fiebrig, no. 
2572 (Gr.), distrib. as E. lasiophthalmum, but differing in its greater smooth- 
ness, absence of punctation on the leaves, thinner and somewhat striate 
involucral scales, ete. 
28. E. vitalbae DC. Prod. v. 163 (1836); Rusby, Bull. N. Y. Bot. 
Gard. iv. 378 (1907); Buchtien, Contrib. Fl. Boliv. i. 189 (1910); 
Robinson, Proc. Am. Acad. liv. 299, 339, 355 (1918), lv. 69 (1919). 
Paz: Prov. Yungas: Coroico, Bang, no. 2389 (Gr., N. Y., U. 
; U. S., Mo.); 
Prov. Larecaja: Charopampa, alt. 488 m., Williams, no. 772 (N. Y.); Charo- 
pampa and San Carlos, acc. to Buchtien, 1. ec. 
DEPT. NOT ASCERTAINED: Machichoirisa, alt. 1068 m., Williams, no. 1610 
pe 
[Cent. Am. to Peru and Braz.] 
29. E. didymum Klatt. Suffruticose; probably 1 m. or more 
_ in height (base unknown); stem terete, when young grayish-puberu- 
lent or tomentellous, in age nearly glabrate, olivaceous or purplish- 
brown, with a few scattered lenticels; leaves opposite, petiolate, 
rhombic-lanceolate to lance-oblong, serrate except near the acute to 
acuminate tip and cuneate or rarely rounded base, somewhat coria- 
ceous, 5-9 em. long, 1.8-4 cm. wide, 3—5-nerved from above the base, 
green and crisped-puberulent on both surfaces though slightly paler 
beneath, at full maturity sometimes nearly glabrate; petiole 1-3 cm. 
long; corymbs 8-15-headed, rather dense, terminal on mostly curved- 
ascending branches; pedicels grayish-tomentellous, 4-25 mm. long; 
heads about 130-flowered, 12 mm. high, 15 mm. in diameter; invol- 
ucre broadly campanulate, the scales multiseriate, narrowly lanceo- 
late to linear, acute to attenuate, mostly 3-nerved and 2—4-costulate, 
dorsally grayish-puberulent to -tomentellous, the inner purple- 
tinged and somewhat glandular-atomiferous toward the tip or even 
slightly viscid; corollas yellowish-white, 5 mm. long; slenderly 
tubular, without distinction of tube and throat; achenes black, 2 mm. 
long, upwardly hispidulous on the angles; pappus-bristles white, 
about 14, nearly equalling the corolla, slightly thickened near the 
