332 GLEASON: STUDIES ON WEsT INDIAN VERNONIEAE 
tomentose beneath; veins elevated below, the lateral ones promi- 
nent and ascending, the veinlets inconspicuous; petiole 8-13 mm 
long; inflorescence broadly pyramidal or hemispheric, about 2 
dm. wide; rameal leaves elliptic, about 2-6 cm. long, otherwise 
like the cauline; heads 4-flowered, in clusters of 3-8, on pedicels 
2-5 mm. long; involucre narrowly campanulate, straw-colored 
or pale brown, 5-6 mm. high, outer scales short, broadly ovate, 
obtuse to subacute and apiculate, irregularly arachnoid or tomen- 
tulose, inner scales deciduous, oblong or ovate-oblong, acute, 
glabrous, or with minute patches of thin tomentum near the tip; 
achenes pale brown, 3 mm. long, prominently ribbed, thinly hirsute 
with oo hairs; pappus white, 8 mm. long, the outer series 
much shorter 
Type, Palmer 139, from San Ramon, Durango, Mexico, de- 
posited in the Herbarium of the New York Botanical Garden. 
In general habit and shape of leaf, Evemosis ovata most closely 
resembles Eremosis Steetzii (Sch.-Bip.) Gleason, but is distin- 
guished at once from this one-flowered species by its four-flowered 
heads. Its nearest relatives are probably to be found among the 
three-flowered species, such as Eremosis Palmeri (Rose) Gleason, 
from which it differs in the broad ovate leaves and dense tomentum. 
The presence regularly of four flowers in each head is a peculiar 
feature, hitherto unknown in the genus. It is paralleled in a way, 
however, by the occurrence of two flowers instead of one in the 
heads of certain specimens of Eremosis tarchonanthifolia (DC.) 
Gleason. 
UNIVERSITY OF MICHIGAN, ANN ARBOR. 
