New or Noteworthy American Grasses.— V. 



By Geo, V. Nash. 



Erianthus Tracyi n. sp. 



Culms stout, erect, 2-4 m, high, smooth and glabrous, the 

 nodes upwardly barbed with deciduous silky hairs, about i cm. 

 long ; sheaths closely embracing the culm, shorter than the inter- 

 nodes, smooth, glabrous, except at the apex, where they are pubes- 

 cent with deciduous, long, silky, appressed hairs ; ligule rounded, 

 about 5 mm. long; leaves 5 dm. long or more, 1.5-3 cm. broad, 

 narrowed toward the base, long-acuminate toward the apex, 

 strongly scabrous on both surfaces, pilose on the upper side toward 

 the base; panicle oblong. 3-5 dm. long, 8-12 cm. wide, cream- 

 white, dense, the main axis and branches pubescent with long ap- 

 pressed silky hairs, the branches usually in 2's, much divided, 

 ascending or nearly erect, 15 cm. long or less; spikelets lanceo- 

 late, 5-6 mm. long, about one-half again as long as the internodes, 

 yellowish brown, usually marked with red, less than one-half the 

 length of the involucral hairs; first and second scales firm-mem- 

 branous, the former a little the longer, both pubescent with silky 

 hairs, twice the length of the scales, the first acuminate, faintly 

 7-nerved at the base, 2-toothed and prominently 2-nerved at the 

 apex, the two nerves scabrous, the second scale acute, the nerves 

 hardly discernible ; third and fourth scales hyaline, shorter than 

 the first and second ones, ciliate on the margins, the third acute, 



