
56 ROBINSON. 
beneath; petiole 14 mm. long; heads in terminal corymbs, 10-12- 
flowered, about 1 cm. high; involucre narrowly campanulate; scales 
about 20, dusky-stramineous, scarious, obtuse, slightly lacerate-ciliate 
toward the tip, the outer gradually shorter, about 5-nerved; corollas 
gradually enlarged toward the summit, scarcely 5 mm. long, glabrous, 
pale-blue or pale-purple; achenes dark, hispidulous on the angles and — 
slightly so on the upper part of the faces; pappus-bristles 30-35, yellow- 
ish-white.— Hieron. in Engl. Bot. Jahrb. xl. 370 (1908).— Cuzco: on 
the hill Sacsahuamén, near Cuzco, alt. 3500-3600 m., Weberbauer, no. 
4850; Ollantaytambo, alt. about 3000 m., Cook & Gilbert, nos. 369 
(U. S.) and 589 (U. S.). : 
This species in habit and many essential characters is exceedingly 
close to E. salicinum Lam., of which it may ultimately prove a variety. 
However, the leaves are less thick and not so firm nor so deeply wrinkled; 
their margins are less strongly revolute, and the upper surface perma- 
nently hirtellous — the hairs (not readily visible except with a lens) 
being white, subappressed, and slightly tuberculate-thickened at the 
base. In E. salicinum, on the other hand, the leaves, even when young, 
are quite glabrous on the upper surface, which is strongly bullate-rugose 
and somewhat lucid. F urthermore, the achenes (at least in the form 
occurring in Colombia) are sparsely covered with short-stiped capitate 
glands. The flower-color in E. Volkensii was noted by Dr. Weberbauer = 
as bluish, a statement questioned by Hieronymus. Cook & Serer 
give the flower-color of their no. 369 as “ pale wistaria violet and 
their no. 589 as “pale blue.” In the dried material of both of ro 
numbers the limb and upper part of the throat of the corollas still sh 
in the dried material a pale purple coloration. 
In regard to the recorded Peruvian occurrence of 
below (p. 87). 
24, KE. Glomeratum DC. Suffruticose, shortly but rather boonies 
ee eee branches terete, leafy to the inflorescence, ™ ; 
2 ‘ ) ; ite, ovate-lanceolate, acum 
6 cm. or more long; leaves opposite par 
densely sordid- 
E. salicinum, see 
to scarcely acute, crenate-dentate except at base, where 
open sinus, slightly pubescent above, softly but not very wide; 
tomentose and somewhat veiny beneath, 4-6 cm. long, 2-3 yer 0 
petiole slender, 8-14 mm. long; globose glomerules 1-3 cm. m @a" : 
terminal on the divaricate branches of a leafy-bracted open sabes : 
subpyramidal panicle; heads sessile, 7-8-flowered; involuere * 
indric-campanulate, the scales brownish-stramineous, $ ; of shorter, 
oblong, obtuse, essentially glabrous, the outer Pp ae zs oe 
ovate, somewhat hairy dorsally near the blunt or rounded tip: 

