45 



Specimens examined. — Tovn: Wapsipinii-on River, 31 E. N. Wilcox, October, 1896. 

 Mkmuri: Courtney, 649 B. F. Bu(<h, August, 1896. Nebraska: Ewing, 1075 J. M. 

 Bates, August, 1897; Simeon, 1115 J. M. Bates, 1897. Kansas: Riley County, 425 

 A. S. Hitchcock, August, 1895. Arkansas: Jefferson County, 125 H. Eggert, Sep- 

 tember, 1896. Texas: no locality, S. B. Buckley, 1883; G. C. Nealley, 1889; J. 

 Reverchon, F. W. Thurow. Louisiana: Arcadia, 78 C. R. Ball, August, 1898. 

 Mississippi: Biloxi, 207, 236 

 T. H. Kearney, jr., October, 

 1896; 3774 S. M. Tracy, Sep- 

 tember, 1897; Horn Island, 

 1578 S. M. Tracy, Septem- 

 ber, 1891. 



ABISTIDA PTJRPURAS- 

 CENS GLAUCISSIMA 

 Kearn. var. nov. 



Whole plant very glaucous, 

 otherwise like typical A. 

 purpurascens. Conspicuous 

 in the field on account of its 

 bluish-white color. 



Type collected l)y T. H. Kear- 

 ney, jr., No. 321, in very 

 dry, sterile soil in an open- 

 ing in the pine forest, 6 

 miles above Biloxi, Missis- 

 sippi, October 7, 1896. 



TRIODIA SESLERIOIDES 

 ARISTATA var. nov. 



A robust grass, 12 to 18 dm. 

 high. Panicle large, open, 

 its lower branches 2 to 2.5 

 dm. long; excurrent tips of 

 the nerves in the flowering 

 glume 1 to 1.5 mm. long. 



Type collected by Miss Marie 

 Meislahn, No. 90, at Clar- 

 cona, Orange County, Flori- 

 da, October (?), 1899. 



General DISTRIBUTION. — Notun- 

 coinmon in low, open woods 

 of central Florida. 



Specimens examined. — Florida: 



Grasmere, 1135 R. Combs and C. H. Baker, Septeml)er, 1898; Homosassaj 978 

 R. Combs, September, 1898; ^McDonald, 132 C. H. Baker, October, 1898; Oak- 

 wood, Duval County, 322 A. Fredholm, October, 1893; Ormond, 5562 A. H. 

 Curtiss, September, 1895. 



ELYMUS ARKANSANUS sp. nov. (Fig. 19.) 



A slender, erect perennial, with a short, broad, bristly, nodding spike. Culms 6 to 8 

 dm. high, terete, smooth; nodes smooth; sheaths mostly a little shorter than 

 the internodes, ciliate on the margins or the lower sjiarsely hirsute-pubescent; 

 ligule less than 1 mm. long, membranaceous; leaf-blades 1 to 2 dm. long, 5 to 8 

 mm. wide, narrowly lanceolate-acuminate, erect or ascending, auricled at the 

 base, scabrous below and on the margins, finely and densely pubescent above. 



Fig. 19. — Elymus arknnxaiiiia Scribn. & Ball: ((. dorsal and 

 anterior views of the flowering glume: b, empty glumes. 



