22 ARK1V FOR BOTANIK. BAND 13. N!0 15. 



as a nomen nudum cannot invalidate Vernonia Sprengeliana 

 Sch.-Bip. 



Subsect. Buxifoliae. 



Frutices ramosissimi. Folia coriacea, parva. Inflo- 

 rescentia cymosa, cytnis brevissimis, uni- vel paucifloris, cum 

 calathidiis primariis pedunculatis axe valde abbreviato insi- 

 dentibus, item umbellas subsimplices, depauperatas formanti- 

 bus; bracteis foliaceis cymis sujfulcientibus. Calathidia parva, 

 circ. 10-flora. Involucrum infundibuliforme vel anguste in- 

 fundibuliforme-campanulatum, squamis imbricatis, subglabris. 

 Receptaculum nudum, subplanum. Pappi setce interiores per- 

 sistentes, rigidulce, crassiusculai, paullulo complanatce, ex- 

 teriores breves, parum distinctce. Corolla glabra. Antherce 

 ultra 2,5 mm longai, ligula longa, l / 3 1 / 4 long, antherce. Achce- 

 nium glaberrimum, glandulosum. 



A very small subsection, including only two species from 

 Hispaniola, easily recognized by their shrubby rigid habit, 

 the peculiar structure of the inflorescence, and by their gla- 

 brous achenes. Gleason made this subsection a particular 

 division of Lepidaploa: Scorpioidece aggregates; yet he refers 

 to it in his Revision V. Thomce Benth., which he correctly 

 discards in his Studies, and V. yunquensis Gleason, which 

 does not belong here at all. 



The two species of the subsection have no allies in the 

 West Indies, nor in Central America, nor in the Andes. Possibly 

 some Brazilian species, e. g. V. nitidula Less., may approach 

 to the Buxifolice. Future investigations may prove this. 



Conspectus specierum hujus subsectionis. 



I. Folia subtus glabra. Calathidia 8-flora. Pappi setse 

 stramineo-rufescentes. V. buxifolia (Cass.) Less. 



II. Folia discolora, subtus appresse tomentella. Calathidia 

 9 11-flora. Pappi setse stramineo-purpurascentes. 



V. Tuerckheimii Urb. 



Vernonia buxifolia (Cass.) Less. 



Tabula nostra I, fig. 11 (habitus). 



Lepidaploa buxifolia Cassini, 1823, p. 18. 

 Proustia domingensis Sprengel, 182G, p. 502. 



