274 Mr. D. Don's T>esc7'iptions of new Genera and Species 



Validis, infr^ laciniarum sinus profundi bipartitis ; secun- 

 dariis per paria interjectis, tenuioribus, ultra medium co- 

 rollae obscurioribus, demi^m evanescentibus ; peripharice 

 plurimi (10 — 20) liermaphroditi, bilabiati, unica serie di- 

 gesti, radiati, tubo longissimo, filiformi ; labia exieriore 

 amplo, ligulato, patulo, 4 — 5-fido, 5— 6-nervio; interiore 

 tenuissimo, subsetaceo, caualiculato, indiviso, uninervio. 

 Filamenta in tubum C5dindricum connata ! membranacea, 

 intds villosa, nervo manifesto medium cujusque percur- 

 renti; nunc raritis omnino libera. AnthercE coalitae, ap- 

 pendice lineari-lanceolata apice uncinate obtusa cartila- 

 gine^ coronatae, valvulis in filamentis decurrentibus, hinc 

 basi simplices, muticae. Stylus hermaphroditis teres, gla- 

 ber ; masculis subclavatus, pentagonus, stigmate emar- 

 ginato, imberbi. Stigma hermaphroditis clavatum, bila- 

 biatum : lobis crassis, brevibus, obtusis, apice subdilatatis, 

 superficie minute papillosis. Achenia turbinata, dens^ vil- 

 losa. Pappus difformis ; peripharice longus, eleganter plu- 

 mosus, mollis, erectus : radiis simplici ordine copiosis (18 — 

 20) im^ basi connatis ; disci setosus radiis plurimis (15 — 21) 

 inajqualibus, subulatis, validis, recurvatis, hirsutis, vix plu- 

 mosis, supr^ planiusculis, imd basi connatis, callosis. 

 Frutices (Amer. JEqain.) scepius spinosi. Folia petiolata, intc- 

 gerrima, mucronata, sape fasciculata. Spinae (dum adsint 

 folia esse mutata) gemince, subulata. Flores solitarii sessiles 

 V. plures terminates corymbosi, magni. Flosculi piirpurei, 

 sericeo-villosissimi. Pili receptaculi ct achenii structurd si- 

 mi II imd,fulvi. Pappus fulvus. 



* Flosculis disci nonnullis, tubulosis. Filamentis in tubum con- 

 natis. Propriae. 

 1. B. spinosa, foliis obovatis mucronatis nervosis, involucris pu- 



bescentibus ; 



