AND THE ADJOINING TEBBlTOliV. 225 



Chuquiraga Kingii differt a proxima G. spinosa, Don, spinis 

 axillaribus brevissimis, foliorum nervis lateralibus obsoletis, et 

 pra>sertim involucri squamis latioribus apice cartilagiueo sub- 

 muticis, nee in mucronem spinescentem acuminata. In hac 

 specie squamae interiores flavae, nee ut in G. spinosa saturate 

 aurantiacae. 



The Indians distinguish the above-mentioned three species of 

 Chuquiraga, and the Patagonian name for this is Amtrac-trac- 

 tschic. 



TarciiocLiNE iieteropiiylla., Less. Very common about Bahia 

 Blanca (No. 141, G. C.). Called by the Spaniards Chucho, but 

 improperly, as the true Chucho is a Solanaceous plant. 



Nassauvia hosulata, aa Acanthophyllum rosulatum, Hook, tif 

 Am. Comp. Bot. Mag. ii. p. 43 (Nos. 88 and 145, Q. C). A 

 stunted shrub growing in rough stony ground in Patagonia from 

 the Rio Negro southward to the Chubat and beyond that river. 

 It is used to make rude combs for the Indian women ; and as the 

 root is very tough, the Patagonians, who call it Yahenelc, drag it 

 up by passing the leather thong which is attached to the saddle of 

 the horse round the base of the stem. This is a curious plaut 

 which, though apparently common in Patagonia, is rare in her- 

 baria. There are but two fragments in the herbarium at Kew ; 

 the first collected by Darwin at Port Desire, the other somewhere 

 on the coast of Patagonia by Captain Middleton. It belongs to 

 a small group including two other species from the Chilian Andes, 

 first described by Lagasca, and referred by him to Triptilion, but 

 more correctly placed in the genus Nassauvia by Don in 1832. 

 Soon after, on account of their very peculiar habit and mode of 

 growth, they were constituted into a separate genus by Hooker 

 and Arnott (Comp. Bot. Mag. i. p. 37) under the name Acantho- 

 phyllum. That name having been previously adopted for a very 

 different genus by C. A. Meyer, the group received the name 

 Stronggloma in DC Prod. vii. p. 51. Iu the present species the 

 upright stems have very numerous branches, which are reduced 

 to rounded glomerules of minute leaves about the size of a pea, 

 with usually 1, sometimes 2, small flowering heads at the apex. 

 My specimens have no primary leaves ; but iu Darwin's specimen 

 these much resemble the involucral scales, having a strong medial 

 nerve which is produced to a sharp spiny point. I have not seen 

 specimens of Nassauvia ghmerulosa, Don (Sirongyloiiut, DC. 



