MACLOSKIE: REVISION OF FLORA PATAGONICA. 279 



Add Macl., p. 86 1, Centaurea calcitrapa Linn. Star-thistle. Much 

 branched. Leaves pinnately lobed or toothed; heads sessile, the inner 

 scales of the ovoid involucre spiny. Pappus none; flowers purple. 

 Annual. N. Patagonia; along Rio Negro, on the east coast by Puerto 

 San Jose ; S. Patagonia, by the mouth of Rio Sta. Cruz. 



Introduced from Europe. 



P. 863, add the genus and species : 



DUSENIELLA (O. Hoffmann sub Dusenia] K. Schm. (P. Dusen, Beitrage 

 Flora von Ost-Patagonien, non Dusenia Broth, genus Muscorutn). 



D. PATAGONICA (Hoffm.) K. Schumann in Just. Bot. Jahresber., 28. 



Description of genus and species in Macl., p. 866, sub Dusenia. 



Mid-Patagonia, near Rawson ; S. Patagonia, Pto. Comoda Rivadavia, 

 common in saline clay, Pto. Mazarado ; in the valleys of Rio Sta. Cruz 

 and Rio Leona ; by Lago Viedma ; in the valley of Arroyo Scheuen ; on 

 many places forming moss-vegetation. D. 



P. 863 : 



CARTHAMUS Linn. Safflower. 



C. MAGELLANICUS Lam. 



This genus is certainly not represented in the Patagonian flora. The 

 Magellan plant which Lamarck referred to it, appears in fact to be Perezia, 

 probably Perezia lactucoides Less. (p. 893). D. 



CHUQUIRAGA Juss. 



P. 863 : 



C. ACICULARIS Don. 



Is also spread far northwards on the east coast of Patagonia, but rare, 

 for instance by Puerto Madryn, and Puerto San Antonio. D. 



P. 864, line 3, insert: 



C. argentea Speg., whose synonym is Domophyton argenteum Speg. (of 

 p. 866). Also C. spinosa Don. var. morenonis Ok. 



S. Patagonia, in the steppes by Rio Gallegos, Rio Sta. Cruz, Rio Chico, 

 and near Puerto San Julian. D. 



According to F. Kurtz this species may be regarded as a variety of C. 

 spinosa, as indicated above. Whether M. Spegazzini's view that it is an 



