220 MR. J. BALL ON THE FLORA OF NORTII PATAGONIA 



Dipsace^. 

 Dipsacus stltestris, L. Naporta Grande, near Bahia Blanca 

 (No. 39, G. C). Introduced from Europe, and has now spread 

 widely. It is found on the banks of streams in the Sierra de la 

 Ventana and Sierra de Tandil, in the valleys of the Rio Negro 

 and Rio Colorado, and as far as Valcheta in Patagonia. Called 

 by the Spaniards Car do de la Sierra. This is an instance of an 

 introduced plant extending its area very rapidly. It appears to 

 be of very recent introduction, and is not mentioned by Grise- 

 bach or by Berg. 



CaLYCEREjE. 



Boopis ASTnEMOiDES, Juss. Bahia Blanca and adjoining 

 country (Nos. 114 & 140, G. C). 



Boons laciniata, =Nastanthus laciniatus, Miers. Grows on 

 the gravelly bed of the Eio Negro, and the Chubat in Patagonia 

 (No. 93, G. C). This belongs to a group of species hitherto seen 

 only in the higher regions of the Andes, and has doubtless been 

 carried down to the plain by the streams from the Southern 

 Andes. It is, perhaps, a variety of B. scapigera, Remy. 



Composite. 



Stevia SATUREI2EFOLIA, Sell. Bip., var. angustifolia, Baker. 

 Isla Verde, south of Bahia Blanca (No. 187, G. C). Flowers 

 rose-coloured. 



Stevia satureijefolia, var. patagonica ? Sierra de la Ven- 

 tana, Sierra de Tandil, Bahia Blanca, and throughout North 

 Patagonia (No. 188, G. C). Fiowers red. I suppose this to be 

 one of the forms of this very variable species. It approaches the 

 variety laxa. 



Eupatorium erodiifolium, DC. Sierra de la Ventana and 

 North Patagonia (No. 79, G. C). This species has been hitherto 

 known only from South Brazil and Uruguay. The Araucaniau 

 Indians call the plant MenuhJce, and use the decoction as a 

 sudorific. 



Mtkania ? Grows in the water of the Naporta, near 



Bahia Blanca, climbing up the stems of reeds (No. 73, G. C). 

 This is a small plant, with leaves sinuato-lobate, the lobes rounded 

 obtuse, the stem thin and feeble, the flower-heads small and con- 



