Gleason: Studies on West Indian Vernonieae 327 



An excellent specimen, Britton 2225, recently received at the 

 New York Botanical Garden from Guantanamo Bay, in extreme 

 eastern Cuba, has leaves of the same character on the old shoots, 

 while on the young branches they are flat or undulate and 10-15 

 mm. long. The Guantanamo plant is described as a shrub 1 m. 

 tall with purple flowers. 



Lepidaploa, Scorpioideae aggregatae 

 Vernania Thomae Benth., included here by Gleason (Revision, 

 191), is now regarded as identical with Vernonia albicaulis Pers. 

 Urban (Symb. Antill. 7: 421. 1912) has recently added a species, 

 so that the number in the group remains four. They may be 

 distinguished as follows: 



A. Achenes pubescent; outer pappus conspicuous, 



its scales much broader than the white bristles 

 of the inner series; leaves 2-3 cm. long. 



Vernonia buxifolia (Cass.) Less. 



B. Achenes glabrous and glandular; outer pappus 



minute, its scales not sharply distin- 

 guished in width from those of the inner 

 series. 



1. Leaves tomentulose beneath; pappus 



strongly tinged with rose color; heads 



about n-flowered. Vernonia Tuerckheimii Urban. 



2. Leaves minutely puberulent or glabrous 



beneath; pappus yellowish or tawny; 



heads 8-flowered. Vernonia montana Gleason. 



C. Achenes densely hirsute; outer pappus conspic- 



uous, its scales chaffy and fimbriate; leaves 

 4-5 cm. long, closely gray-tomentose, and 

 with prominent veins beneath. Vernonia yunquensis Gleason. 



The first three species are all very similar in habit and structure, 

 and are all natives of Hispaniola. There is no doubt that they 

 are closely related. The character of the pappus and the larger 

 leaves indicate that V. buxifolia is the primitive form. The dis- 

 tribution (Cuba) and the general habit of V. yunquensis, especially 

 of the leaves, as expressed in pubescence and venation, separate 

 it sharply from the first three species, and imply that it may 

 logically constitute another species-group. 



Vernonia segregata sp. nov. 

 A straggling or vinelike shrub, reaching a height of 2.5 m.; 

 stem obscurely striate, closely pubescent; the branches olive- 



