PANKK.K. 135 



Owing to the meagre descriptions anil the few and incomplete 

 epeciniens seen, there is c'Oiisi(U'ral)le doubt as to the correct iden- 

 tilicution of this species. Possibly other ])lants would unite it to 

 P. brcvifoUuin L., after tlie manner of numerous puzzling forms 

 of P. ilichotuinum L. 



54. P. neuranthum Griseb. Tl. Cub. 'Z:n (ISOG). 



A smooth slender erect or ascending grass. o0-50 cm. higli, 

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

 rather iirm, ilat or subinvolutc, acuiniuiite. 5-10 cm. long. "^-4 

 mm. wide. Terminal panicle much exserted, sim[)le, o-o cui. 

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

 obtuse, 2.0 mm. long; first glume very thin, delicately ."J-nerved. 1.3 

 mm. long; second and third glumes T-nerved; fertile llorct bioad, 

 oval, suu)oth, obtuse. 



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

 spikelets 'I mm. long. 



r. S. Dei)t. Agricul. 84. 



Texas, Jti(/(js. 



This seems much like a form of P. (Jirliotomitm, so far as T have 

 studied the few specimens seen. 



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

 (1880). 



A slender erect light green perennial. .30-00 cm. high, branch- 

 ing but little, lilades of the culm thin, nearly smooth, erect, 

 acuminate. 4-7 cm. long. 4-0 mm. wide, those of the sterile shoots 

 much shorter, thicker and pubescent. Panicle mucOi exserted, 

 simple. :)-5 cm. long; rays 4-5. spreading, each bearing 2-3 s()ike- 

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

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

 the others, ovate, 1-nerved. l.G nnn. long; second and third glumes 

 oblong, obtuse, 7-nerved. 



Texas. P. S. Depf. Agricul. from Keverchon. In herl). Gray 

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

 likely. P. Peverclioni Vasey. 



50. P. verrucosum Muhl. Gram. 113 (1817). P. ilehile Ell. Bot. 

 S. C. andGa. 1:129 (1817). 



