PAXICE^. 168 



A rather slender, erect grass, 30-40 cm. high. Culms branched 

 at the base, compressed. Sheaths compressed-keeled equalling, or 

 the upper longer than the internodes ; ligule a ciliate ring ; blades 

 erect, acuminate, 10-20 cm. long, 4-8 mm. wide. Panicle erect, 

 loosely flowered, 6-10 cm. long, 6-10 mm. diam., rachis and rays 

 angular, scabrous, bristles about twice as many as the fertile flowers, 

 1-2 cm. long, rays irregular, 6-12 mm. long, 1-5-10-flowered. 

 Spikelets ovoid, acute, about 3 mm. long, first glume very broad, 

 obtuse, concave, thin, 5-11-nerved, 1.3 mm. long, second obtuse, 

 thin (with cross nerves), subreniform, 13-19-nerved, third ovate, 

 obtuse when spread. 7-9-nerved, with or without a palea; floral 

 glume ovate, mucronate, 2 mm. long. Spikelets appear acute, 

 owing to the involution of the apex of the glumes. In the above 

 description. Dr. Vasey is followed rather closely, though the plant 

 was examined. 



Nearly allied to C. latiglumis, and perhaps one is a mere variety 

 of the other. 



Mexico, Palmer 78. 



5. C. Ventenatii (Kunth). 



Setaria Ventenatii Kunth, Rev. Gram. 1 : 251, f. 37 (1829). 



Culms erect, glabrous, slightly compressed, pubescent at the 

 nodes, 40-60 cm. high. Sheaths compressed; ligule a fringe of 

 hairs; blades scabrous, flat, narrow below^, 15-30 cm. long, 5-7 mm. 

 wide. Spikes much exserted, thin, purplish. 6-8 cm. long. Spike- 

 lets 2-4 in a cluster or single, having 2-3 bristles 15 mm. long, each 

 (including those abortive) with asperities pointing upwards, oval, 

 almost pointed, gibbous, 2.5 mm. long; first glume deltoid, half as 

 long as the spikelet, 3-nerved, second longer, 5-7-nerved, third 

 5-nerved; fertile floret slightly wrinkled transversely. Index 

 Kewensis includes this under Setaria glauca. 



Florida, G. V. NasJi 1382 in 1894. 



6. C. flava (Kunth) Kuntze, Rev. Gen. PI. 770 (1891). Setaria 

 flava Kunth, Rev. Gram. 1:46(1829). Panicum flavum Nees, 

 Trin. Gram. Panic. 162 (1833). 



Culms erect, compressed, smooth, branching below, 30-60 cm. 

 high. Sheaths compressed; ligule a mere ring, thinly pubescent; 



