PAXICE.E. 133 



0-nervetl: floral glume of the neuter floret a little siiortt-r, 

 7-!»-nerveil, its piiiea inueh shorter; fertile floret half terete, 

 smooth, ovul. 'i-'i.o mm. long. This was distributed by the U. 8. 

 Dept. Agricul. at one time as /*. f/if/a»feiiiti Seheele. 



Mexico. Pn'tif/Ie :}70. PaJmcv 108'', 20G; Arizona. Priiiifh'. 

 distributed as /*. rdpillure (var.?); West Texas, yeallei/, llitniril. 



Fouiul in many parts of Texas and Mexico. 



A plant named as above is in the lierbarium of the late 

 Dr. G. Thurber, fnmi Kotschyi, iter Nubicuni, One very closely 

 resembling it is named J\ /isilnpodiinii. Trin. ^ISS.. idcntitii'd by 

 tJeneral Munro and now in Herb. Gray of Harvard University. 



In the description aliove considerable use was made of Vasey's 

 contribution as above referred to. 



The specimens resemble No. 497 of Pringle's Mexican plants 

 named /*. <liJ}'i<sNm Swartz. 



Found in nniny parts of Texas and in ^Mexico. 



50. P. diffusum S\v. Prod. 23 (KSS). 



A tufted jierennial, hirsute throughout, except the spikelets. 

 sparingly branching below, about 60 cm. high. Leaf-I)lades flat, 

 erect, 10-20 cui. long, H-IO mm. wide. Panicles ])yramidal. much 

 cxserted or the lowi-st jiartially included. 10-15 cm. long. sinipU'. 

 open: rays mostly single, stifl", si)reading. S])ikelets pale green, 

 very smooth, single or in i)airs. on short pedicels, lanceolate-ovate, 

 about 4 mm. long: first glume acute, half as long as the si)ikelets. 

 5-nerved: second ovate, acute, 13-nerved: iloral glume of the lower 

 floret equal to the second and 11-nerved, its palea half as long: 

 fertile floret oval, almost acute, 2.5 cm. long. 



^lexico, Priiif/Ir 4'.iT. 



Much like /'. Jlol/ii Vasey; but this plant is liirsute. blades 

 longer and wider, the spikelets larger, second glume lo-nerved 

 instead of 9-nerved, third glume 11-nerved in })lace of li-nerved. 



Mexico, West Tiulies. 



51. P. ciliatissimum Buck, fide Vasey, Contrib. U. S. Nat. 

 Mus. 3:20 (1802). 



Culms slender, procumbent or erect. 30-40 cm. high, nodes 

 pubescent. Leaf-blades flat, pubescent, rough with stout hairs on 



