66 • PROCEEDINGS OF THE AMERICAN ACADEMY 



petlunculis paucis brevibus pubescentibus ; involucri (pollicem alti) 

 bracteis lato-lanceolatis ; corollie tubo hirsute ; antheris nigricantibus. 

 — A. Chamissonis, Schmidt, Fh Sachal. 151, non Less. — Sachalia 

 Island. — Associated with A. Unalaschensis and A. obtusifolia by the 

 anthers ; very different from A. Chamissonis. 



Cynaroidece. 



Cnicus, L. In revising this genus for the Synoptical Flora of N. 

 America, the species have been newly arranged, and several new names 

 have been brought in, of which some mention will here be made. The 

 section Echinais nearly breaks down. The only one of our species 

 strictly belonging to it is 



C. American us, viz. C. carlinoides, var. Americamis, Gray, Proc. 

 Am. Acad. x. 48, which appears to be essentially dijGferent from the 

 Asiatic species. 



C. Hallii is a new species of the group with narrow and loose in- 

 volucral bracts, gradually tapering from a comparatively narrow base, 

 the outer little shorter than the inner, — to which belong specimens 

 variously referred to G. Parryi, remotifolius, Hookerianus, eriocephalus, 

 and edulis. It is no. 310 of Hall's Oregon collection, and was also 

 collected by Leramon in S. W. California, and in S. Utah by Mrs. 

 Thompson. Hall's specimen had been referred to C. edulis, but it has 

 not the peculiar filiform corolla-lobes with capitellate-callous tips of 

 that species. 



C. IvAMTSCnATicus, Maxim., of the same section, is a new acquisi- 

 tion, from Atkha, one of the Aleutian Islands, collected by Lieut. Tur- 

 ner. It is the only indigenous species we have which is not peculiar 

 to North America. 



C. Eaton I, to which is referred Cirsium eriocephalum, var. leioccph- 

 ahim, with C. foliosum and C. Drummondii in part, of D. C. Eaton in 

 Bot. King Exped., ranks between the preceding group and one to 

 which belong O, Andrewsii, Neo-Mexicanus, Califoi-nicus, &c., with 

 more imbrication to the involucre, the upper portion of the bracts more 

 or less spreading and spinescent-tipped, and no trace of viscid or 

 glandular line or ridge on the back. 



C. RoTiiROCicii, already published in the Proceedings, vol. xvii., 

 follows C. Arizonicus in the next group, but is a very distinct species. 



C. FOLiosus, Gray. To this (not to C. Americmms), according to 

 the character, we would now refer Cirsium scariosum, Nutt. 



C. WiiEELERi is a new species, allied to the foregoing, but with the 

 inner bracts of the involucre more conspicuously scarious-tipped, the 



