332 ROBINSON. 
described by J. R. Johnston, and portions of the delta region of the 
Orinoco Valley, traversed by Rusby & Squires in their journey of 
1896. 
Of the species here enumerated, nearly all rest, as to their Vene- 
zuelan occurrence, upon specimens from definitely located places 
within the present limits of the country. However, a few (nos. 1, 7, 
21, and 30), although examiried in specimens said to have come from 
Venezuela, have either been unaccompanied by more definite locality, 
or have had place-names not capable of location by any of the maps 
or atlases available. Of no. 16 (E. vitalbae) no Venezuelan material 
has as yet been seen or reported, but the species is known so close to 
Venezuela and is so frequent on both sides of the country as to make 
its ultimate discovery within the limits of Venezuela almost certain. 
In all these cases it has seemed best to err rather on the side of 
fullness than of critical elimination in drawing up the present list 
and therefore to include all species even somewhat vaguely record 
for Venezuela. 
For a key to the sections of the genus reference may be made to 
269. 
Sect. I. CyiinprocepHata DC. (see p. 270). 
Key To SPECIEs. 
a. Leaves pointed (acutely or at least obtusely) at the base b. 
b. Pedicels sulcate-angulate, glabrous c. 
c. Leaves lanceolate, caudate-acuminate; involucre obtuse 
in bu , 
d. Heads 45-75-flowered; leaves 3-nerved above the base 
1. E. pellium. 
d. Heads 10-20-flowered; leaves definitely pinnate- ee 
WOME at case rk eee 2. E. Moritzianum 
c. Leaves ovate, obtusish to short-acuminate; involucre x ange 
u u 
b. Pedicels terete or nearly so, pubescent or puberulent @. 
e. Involucral scales subherbaceous at tip ff. 
aves lanceolate to narrowly oblong or linear; heads” lium. 
about 20-flowered 4, E. ager 
f. Leaves rhombic-ovate; heads 45-60-flowered. ..- - 5. E. ut 
e. Involucral scales often somewhat more deeply colore 
ae in texture aa a changed at tip g: Ae : 
g. Leaves strongly bullate above, narrowly lanceolate, . : 
attenuate to a subsessile base.........-.---+++: 6. E. meriden 
g. Leaves never strongly bullate above, ovate h. 
h. Seales rounded at the tip or slightly narrowed to an 
obtuse point i. : 
i. Leaves usually 6-10 em. long; veins not forming 
