GLEASON: STUDIES ON WEsT INDIAN VERNONIEAE 307 
As long ago as 1829 Lessing mentioned a specimen of this 
species from the ‘‘insulis Caribaeis’’ in Willdenow’s herbarium. 
The herbarium of the New York Botanical Garden now contains 
~ aspecimen from Guadeloupe, Duss 4032, where it occurs in a single 
locality. It is therefore admitted as a member of the North 
‘American Flora. 
SPECIES-GROUP ARBORESCENTES 
Vernonia icosantha DC. Occurs also in Guadeloupe Island, 
Duss 2812. 
Vernonia arborescens (L.) Sw. This species, typically of 
Jamaica, occurs also in Grand Cayman, Hitchcock, in the herbarium 
of the Missouri Botanical Garden. 
Vernonia amaranthina sp. nov. 
Apparently herbaceous and freely branched, height not re- 
ported; stem and branches straight, striate, closely and softly 
pubescent or tomentulose, the branches ascending; leaves spread- 
ing, firm, rather dull green, ovate-lanceolate to narrowly oblong- 
elliptical, the principal ones 7-9 cm. long by 2-3 cm. wide, acute 
or short-acuminate, entire or somewhat irregular at the margin, 
but not serrate, narrowed to an acute base, minutely papillose- 
pubescent and scabrellate to the touch above, pubescent, espe- 
cially along the veins, and minutely glandular beneath, veins 
conspicuous, elevated beneath, the lateral ones strongly ascending; 
petioles definite, 5-10 mm. long, pubescent or tomentulose; 
inflorescence freely branched and spreading; cymes short, naked 
below and bearing 2-5 heads aggregated near the tip, or separated 
by internodes less than 1 cm. long; rameal leaves resembling the 
cauline but smaller, those subtending the cymes narrowly ob- 
lanceolate, 1-2 cm. long, those subtending the heads linear to 
narrowly oblanceolate, shorter than or barely equaling the in- 
volucre; heads 21-29-flowered, sessile; corolla purple; involucre 
campanulate, about 5 mm. high, its scales purplish, thinly 
pubescent, irregularly imbricated, the outer triangular to ovate, 
sharply acute and somewhat cuspidate, the inner oblong, rounded 
to a mucronulate tip; achenes densely hirsute, 1.5 mm. long; 
pappus white, 4 mm. long, the outer series conspicuous. 
Type, E. G. Britton 2897, from “Greenland,” Jamaica, March 
13, 1908, in the Herbarium of the New York Botanical Garden. 
Britton & Hollick 2133, from Green Island, Jamaica, is also 
