418 DESCRIPTIONS OF NEW SPECIES 



Tribe V. CYNARE^. 



Subtribe CARDUINEtE. (Lessing.) 



CARDUUS. (Gartner.) 



§. I. *Leptoch^ta. — Rays of the pappus sle?ider and few; anthers hisetose at 



base, the setce lacerate. 



Carduus ^occidentalis; %, dwarf; leaves deeply pinnatifid, above nearly 

 smooth, beneath canescently tomentose, segments subpalmate, ultimate divi- 

 sions lanceolate, terminating in short spines, and spinosely serrulate; involu- 

 crum subglobose, arachnoidly tomentose; divisions lanceolate, erect, termi- 

 nating in stright spines, the innermost scariose, spineless and acuminate. 



Hab. Round St. Barbara. Stem tomentose, six inches to a foot high. Leaves four or five 

 inches long, about three-quarters to one and a quarter inches wide, with a lanceolate outline, softly 

 tomentose beneath, the lower petiolate, cauline amplexicaule at the base, divisions somewhat 

 palmate, in three or four unequal segments, the spines short. Capituli two or three, terminal, 

 subsessile, pale purple; florets very slender, subringent or unequally cleft. Anthers distinctly 

 bisetose and lacerate at base ; pappus scanty, more slender than in most European Cardui; some- 

 what scabrous, the whole habit of the plant similar to that of Circium discolor. The pubescence 

 of the involucrum quite as remarkable as in the Cob-web Sempervivum, spreading from one scale 

 to another in right lines. 



CIRCIUM. (Tournefort.) 



Obs. To the character of this genus I would add, that in all the species which 

 I have examined, indigenous to America and the old world, the anthers are 

 very distinctly caudate at base, with this appendage generally torn or cleft 

 more or less deeply at the extremity. Erythrolcena and Chamcepeuce are, 

 therefore, mere sections in the present genus, distinguished principally, and 

 9,lmost solely, by habit and the form of the involucrum. 



§. II. Eriolepis. (Cass., Decand.) 



Circium * Hookerianum; arachnoidly tomentose; stem nearly simple; radical 

 leaves deeply sinuately pinnatifid, beneath canescently tomentose, the segments 

 sublanceolate, unequally bifid, spiny at the points, and ciliately spinulose; stem 

 leaves narrow lanceolate, slightly decurrent, rigidly spiny, the summit merely 

 toothed, with the segments bifid and very short; capituli few, axillary and ter- 



