Plants Collected in Paraguay. 265 



Cliamaerapliis setosa (Sw.), Kuntze, 1. c, 768. 



Setaria macros f achy a, H. B. K., Nov. Gen., i, 110. 



Between Yilla Kica and Escoba (546); Asuncion (658); Pirayu 

 (613); Pilcomayo River (1574), January-rApril. 



A grass striking- in appearance and of common occurrence in 

 Paraguay. The culms are sometimes nearly 3 m. high, and the 

 leaves 30-45 cm. long and 2-3 cm. broad, strongly sulcate, almost 

 plicate. Panicle 20-30 cm. long and 3-4 cm. broad, branches sin- 

 gle, 1-1^ cm. long, the inflorescence looking as though it were all 

 bristles. Setae very numerous, l-2-|- cm. long. Spikelets 2-2^ mm. 

 long. 



CliamdBrapliis paiicifolia, Morong, n. sp. 



Culm terete, glabrous or slightly rough, striate or nearly smooth, 1-2 m. 

 high, with a dark ring at the nodes ; interuodes 15-25 cm. long. Leaves few, 

 striate, with the sheaths minutely rough, nearly as long as the stem, revolute, 

 running to a long acuminate point. Ligule reduced to delicate white hairs. 

 Panicle terminal, spiciform, densely cylindrical, 10-20 cm. or more in length, 

 and about 1 cm. wide, on naked peduncles 3-5 dm. long. Spikelets sessile or 

 on minute pedicels, on the rachis or on very short lateral branches, closely 

 crowded, glabrous, about 3 mm. long, acute, slightly recurved and spreading. 

 Empty glumes white, the lowest about 1 mm. long, the second a little longer, 

 5-nerved, both barely pointed and having a curiously puffed appearance. 

 The flowering glume as long as the flower, acute, 5-nerved, whitish. Palea 

 wrinkled transversely, very thick and hard, purplish when mature. Setse 

 ] or 2 under each spikelet, 10-12 mm. long. This plant usually grows in 

 tufts. The culms are often branched below, and the branches flower-bearing. 



On the campo at Caballero (418), and on the Pilcomayo Kiver 

 (982). January-April. 



Cenclirus ecliinatus^ L., Sp. PL, Ed. 2, 1150. 

 Asuncion (96). November. 



Cenchrus myosuroides, H. B. K,, Nov. Gen., i, 115. 



Asuncion (214). November-December. 



A fearful thing to encounter when the burs are ripe, as the plant 

 is nearly as high as one's head, and the thickly crowded spike is 

 sometimes 25 cm. long. I have had my clothes so completely 

 covered with the burs that it took me nearly an hour to pick them off. 



Old fields in the vicinity of Asuncion. 



