246 Mr. D. Don's Descriptions of new Genera and Species 



series, will constitute perhaps another section. The Chaptalia 

 maxima of the Prodromus Florce Nepalensis has been improperly 

 referred by me to this genus, being really a species of Perdicium, 

 as constituted by Lagasca and DeCandolle. The Chaptalia run- 

 cinata of M. Kunth having the centre florets with a regular five- 

 cleft limb appears to belong more properly to the following 

 genus. 



Onoseris. Dec. 



Onoseridis sp., Willd., Kunth. 



Atractylidis sp., L. 



Flosculi periphtsricB foeminei, radiati, bilabiati ; disci hermaphro- 

 diti, tubulosi : limbo regulari, 5-fido. 



Involucrum hemisphaericum, triplici ordine polyphyllum, imbri- 

 catum. Receptaculum nudum. Flosculi radii foeminei, bi- 

 labiati, staminibus sterilibus ; labio exteriore maximo, ligu- 

 lato, tridentato ; interiore tenuissimo, saepi^is bipartite, spi- 

 raliter convoluto ; disci hermaphroditi, tubulosi : limbo re- 

 gulari, 5-fido : laciniis linearibus, obtusis, binerviis. Anthera 

 appendicul^ lineari-lanceolat4 cartilagined coronatae, basi 

 bisetosae. Stigma bilobum : lobis obtusis, pruinosis. Ache- 

 nia ancipiti-compressa, sericeo-villosa. Pappus capillaris, 

 persistens : radiis duplici ordine digestis, denticulato-sca- 

 bris. 



Herbae acaules, lanata. Scapo simplici v. diviso. Flores scepius 

 purpurei. 



1. O. brevifolia, foliis subsessilibus ellipticis denticulatis scabris 

 venosissimis, flosculis radii labello interiore indiviso. 

 In Monte Video. Sello. %. 

 Radix praemorsa fibris compluribus praelongis instructa. Caudex 

 brevissimus, fulvo-villosissimus. Folia subsessilia, humo 



adpressa, 



