PANICE^. 135 



Owing to the meagre descriptions and the few and incomplete 

 specimens seen, there is considerable doubt as to the correct iden- 

 tification of this species. Possibly other plants would unite it to 

 P. hrevifolium L., after the manner of numerous puzzling forms 

 of P. dichotomum L. 



51. P. neuranthum Griseb. PI. Cub. 232 (1866). 



A smooth slender erect or ascending grass, 30-50 cm. high, 

 considerably branched near the top. Ligule a mere ring; blades 

 rather firm, flat or subinvolute, acuminate, 5-10 cm. long, 2-4 

 mm. wide. Terminal panicle much exserted, simple, 3-5 cm. 

 long; rays diverging. Spikelets pedicellate, softly pubescent, oval, 

 obtuse, 2.5 mm. long; first glume very thin, delicately 3-nerved, 1.3 

 mm. long; second and third glumes 7-nerved; fertile floret broad, 

 oval, smootli, obtuse. 



Var. ramosum Gris. Much branched, blades very narrow, 

 spikelets 2 mm. long. 



U. S. Dept. Agricul. 84. 



Texas, Riggs. 



This seems mucli like a form of P. dichotomum^ so far as I have 

 studied the few specimens seen. 



55. P. pedicellatum Vasey, Bull. 8, U. S. Dept. Agricul. 28 

 (1889). 



A slender erect light green perennial, 30-60 cm. high, branch- 

 ing but little. Blades of the culm thin, nearly smooth, erect, 

 acuminate. 4-7 cm. long, 4-6 mm. wide, those of the sterile shoots 

 much shorter, thicker and pubescent. Panicle much exserted, 

 simple, 3-5 cm. long; rays 4-5, spreading, each bearing 2-3 spike- 

 lets. Spikelets on pedicels 4-10 mm. long, oblong-obovate, obtuse, 

 sparsely pubescent, 3 mm. long; first glume at some distance from 

 the others, ovate, 1-nerved, 1.6 mm. long; second and third glumes 

 oblong, obtuse, 7-nerved. 



Texas, U. S. Dept. Agricul. from Reverchon. In herb. Gray 

 is an identical plant from the same source ticketed, by mistake most 

 likely, P. Eeverchoni Yasey. 



56: P. verrucosum Muhl. Gram. 113 (1817). P. debile Ell. Bot. 

 S. C. and Ga. 1:129 (1817). 



