306 Gleason: Studies on West Indian Vernonieae 



new species, which are here described. The total number of 

 species of Vernonia recognized from the West Indies at the present 

 time is therefore sixty-three. In addition, an Asiatic species 

 escaped or adventive in Guadeloupe has been found to differ from 

 Vernonia in particulars important enough to warrant its segrega- 

 tion, and a new species of the related genus Eremosis has been 

 described from Mexico. 



Cyanthillium Blume, Bijdr. Flora Nederl. Indie 889. 1826 



Isonema Cass. Bull. Soc. Philom. 1817: 152. 1817. Not Isonema 



R. Br., 1809. 

 Cyanihyllium Blume, Flora Javae 1: vi. 1828. 

 Cyanopis Blume, Flora Javae 1: vi. 1828; DC. Prodr. 5: 69. 



1836. 

 Cyanopsis Endl. Ench. 232. 1841. Not Cyanopsis Cass. Bull. 



Soc. Philom. 1817: 200. 1817. 

 Claotrachelus Zoll. Nat. en Geneesk. Arch. Neerl. Indie 2: 565- 



1845, ./wfe Hoffman, in Engl. & Prantl, Nat. Pfl.-Fam. 



The genus differs from Vernonia in its very fragile, uniseriate 

 pappus, and its 4-5-angled achenes. 



Cyanthillium chinense (Lam.) comb. nov. 



Eupatoria conyzoides foliis glabris summo caule ramosior, lamii folio 



flore purpureo Pluk. Phytographia pi. 177. f. 2. 1691. 

 Conyza chinensis Lam. Encyc. 2: 83. 1786. 

 Conyza patula Ait. Hort. Kew. 3: 184. 1789. 

 Isonema ovata Cass. Diet. Sc. Nat. 24: 25. 1822. 

 Conyza odorata Willd. in Spreng. Syst. 3: 511. 1826. 

 Cyanthillium villosum Blume, Bijdr. Flora Nederl. Indie 889. 



1826. 

 Cyanthillium pubescens Blume, Bijdr. Flora Nederl. Indie 890. 



1826. 

 Centratherum chinense Less. Linnaea 4: 320. 1829. 

 Vernonia chinensis Less. Linnaea 6: 105, 674. 1831. 

 Cyanopis pubescens DC. Prodr. 5: 69. 1836. 

 Cyanopis villosa DC. Prodr. 5: 69. 1836. 

 Claotrachelus rupestris Zoll. Nat. en Geneesk. Arch. Neerl. Indie 



2: 565. 1845. 



