23G MR. J. BALL ON THE FLORA OF NORTH PATAGONIA 



JuNCACE.ffi. 



Juncus acutus, L. Bahia Blanca and elsewhere, common 

 (No. 37, G-. C). The succulent rhizomes are sought after 

 by pigs at Bahia Blanca. 



Typiiaceje. 

 Typha angustifolia, L. Extends from the valleys of North 

 Patagonia, through the provinces of Buenos Ayres and Entrerios 

 (No. 229, G. C). The Spanish name is Totara, the Araucanian 

 Trapal. This cosmopolitan species probably owes its dissemina- 

 tion to water-birds, and not to the agency of man. 



CVPERACEJ!. 



Cyperfs vegetus, Willi. Valley of the Rio Negro (No. 171, 

 G. C). 



Scirpus maritimvs, L. Common at Tuyu and elsewhere 

 (No. 234, G. C). In default of better material, this is sometimes 

 used for thatching. 



Scirpus ? Valley of the Eio Negro (No. 170, G. C). 



A very imperfect fragment, not determinable. 



Oarex phalaroides, Kunth. Bahia Blanca, on banks of streams 

 (No. 77, G. C). 



Carex riparia, L. Bahia Blanca, North Patagonia, and 

 throughout the province of Buenos Ayres ; common along water- 

 courses (No. 38, G. C). This is the form described as C. incras- 

 sata, Schlecht. 



Gramineje. 



Setaria caudata, Boem. 4' Seh. Bahia Blanca and North 

 Patagonia, common (Nos. 11 and 179, G. C). 



Spartina coarctata, Trin. Bahia Blanca, and also from Tuyu 

 (No. 225, G. C). A tall, wiry grass, used for thatching. 



Andropogon argenteus, DC. Bahia Blanca (No. 14, G. C). 



Chrtsopogon stipoides, Trin. {ex Munro, MSS.), = Sorghum 

 nutans,^. Gray {L. sub Audropogone), = Andropogon avenaceus, 

 Michx. Valley of the Naporta Grande, district of Bahia Blanca 

 (No. 9, G. C). This species was collected somewhere near Bahia 

 Blanca by Darwin. It has a wide geographical range in the 

 American continent. According to strict rules of nomenclature, 



