308 GLEASON: STUDIES ON WEsT INDIAN VERNONIEAE 
referred here. The latter is a virgate plant 2 meters high, and the 
inflorescence is consequently small and composed of relatively 
few heads. It differs in no essential way from the type. 
V. amaranthina is distinguished from V. arborescens, its nearest 
relative, by the rounded and mucronulate inner scales of the 
involucre and its short contracted cymes, contrasting with the 
acute or acuminate inner scales and elongated cymes of V. 
arborescens. 
SPECIES-GROUP ARARIPENSES 
A. Leaves of a linear type, 1-5 mm. wide, one-nerved, 
or less revolute. 
x. Leaves linear to narrowly lanceolate, 3-5 mm. wide; 
er scales pes above the base, purplish or 
ies ; midd d outer scales glabrate; pappus 
tawny or pale brown. 
2. Leaves I-4 mm. wide, linear; inner scales broadest 
near the base; all scales densely strigose, 
pale-green; pappus white or very pale 
yellowish-brown 
a. Leaves 3-8 cm ones densely papillose-pu- 
bescent hae: inflorescence divaricately 
branched; heads 18—21-flowered. 
b. Leaves I-3 cm. long, strigose-hispid above; 
inflorescence slender, virgate; heads 11- 
owered. 
Vernonia araripensis. 
, 
Vernonia stenophylla. 
fi Vernonia corallophila. 
B. Leaves 4-20 mm. wigs _Datvaety Sects me hots as 
obovate 
the base; all wena: strigose-pubescent; pappus 
white or nearly so 
T 
I 7. 5, 3 244 | A 
3 ” 
UMmOHs b > without 
conspicuous lateral veins beneath. 
Vernonia angustata. 
2. Leaves broadest near or above the middle, veiny. 
Vernonia gnaphaliifolia. 
The status of the first three species in the key above is still 
open to question and may require future adjustment. Gardner’s 
type locality for V. araripensis was in Brazil, and it is scarcely 
probable that the same species occurs in the Antilles, especially 
as far as Cuba or Santo Domingo. Authentic specimens of 
Lessing’s V. stenophylla have not been seen, and the plants 
referred to his name differ in some slight features from the original - 
description. Both species are accepted solely on the authority 
of certain European students of the genus. 
