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



validis, infra laciniarum sinus profundi bipartitis ; secun- 

 dariis per paria interjectis, tenuioribus, ultra medium co- 

 rolla? obscurioribus, demum evanescentibus ; peripharice 

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

 gesti, radiati, tubo lorigissimo, filiformi ; labia exteriore 

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

 tenuissimo, subsetaceo, canaliculato, indiviso, uninervio. 

 Filament a in tubum cylindricum connata ! membranacea, 

 intus villosa, nervo manifesto medium cujusque percur- 

 renti ; nunc rarius omnino libera. Anthera coalite, ap- 

 pendice lineari-lanceolata apice uncinata obtusa cartila- 

 ginea 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, dense vil- 

 losa. Pappus difformis ; peripharice longus, eleganter plu- 

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

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

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

 mosis, supra planiusculis, ima basi connatis, callosis. 

 Frutices (Amer. iEquin.) scepiiis spinosi. Folia petiolata, inte- 

 gerrima, mucronata, scept fasciculata. Spinoe (dum adsint 

 folia esse mutata) gemina, subulatce. Flores solilarii sessiles 

 v. plures terminates corymbosi, magni. Flosculi purpurei, 

 sericeo-villosissimi. Pili receptaculi et achenii siructurd si~ 

 millima , fulvi. Pappus fulvus. 



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

 natis. Propriae. 



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



bescentibus ; 



