GLEASON: STUDIES ON WEsT INDIAN VERNONIEAE 329 
assigned the proper specific name without difficulty. In addition, 
a new species has been collected by Shafer and is described below. 
With the exception of V. pallescens, whose position in this 
group 1s somewhat uncertain, the group is distinguished by similari- 
ties in habit. The leaves are of a comparatively broad type, 
widest near or usually above the middle, and with the serration 
most prominent on the distal half. The involucre scales are 
regularly pubescent in two areas on the back, one on each side of 
the mid-nerve. 
The four species may be distinguished as follows: 
A. —— strictly scorpioid; the cymes many-headed 
ongated; heads all sessile. Vernonia pallescens. 
B. Aeeiatiat freely branched and subpaniculate, some of 
the heads pedicellate; leaves with a tendency to be 
broadest above the middle; scales glandular on the back, 
e. 
I. Heads with 18 flowers or more; involucres 5-8 mm. 
high, or some of the scales 10 mm. long, distinctly 
purple-tinged; leaves essentially glabrous on both 
sides; pappus white, or with a faint brownish yellow 
Vernonia havanensis. 
4 Fairey Ore ene, involucres 3-4 mm. high, ob- 
scurely or not at all tinged with purple; leaves 
scabrous above; pappus pale brown 
a. Heads 11~13-flowered; inner ia obtuse or 
subacute; inflorescence divaricate. Vernonia Oitonis. 
b. Heads 5-flowered, aggregated in subcapitate 
clusters at the ends of the branches, forming a 
pyramid or subhemispheric inflorescence; 
inner scales acute. Vernonia Orientis. 
Vernonia pallescens Gleason. The species certainly differs 
phylogenetically from the rest of the group, as shown by its 
inflorescence and its geographical distribution. It is included in 
the group merely for lack of a better place to put it. 
VERNONIA HAVANENSIS DC. Prodr. 5: 37- 1836. 
Vernonia stictophylla Wright, Sauv. Anal. Acad. Ci. Habana 6: 
176. 1869. 
The specimens at hand fall into two groups, the first with leaves 
long-attenuate at base, almost sessile, and thin in texture; the 
second with leaves cuneate into a distinct petiole and firm in 
texture. No other characters for their separation have been 
