62 Rhodora [Makch 



or Ell. P. hispidum Muhl. Gram. 105 (1817). P. crusgalli, var. 

 hispidum Ell. Fl. S. C. & Ga. i. 114 (1821).— Brackish marshes along 

 the coast from New Hampshire to Florida, Texas and the West 

 Indies, also inland about the Great Lakes, apparently absent from 

 Mexico and Central America. Inland specimens studied were as 

 follows: New York: Ithaca, 1913, E. L. Palmer, no. 98, 1914, Wit- 

 gand, no. 1,572, 1916, Fames & Mctcalf, no. 5,571. Ohio: St. Marys, 

 1900, A. Wctzstein in Kneucker Gram. Exsic, no. 75; Bay Point, 

 1914, MacDanicls & Fames, no. 289. Indiana: Little Chapman 

 Lake, Kosciusko County, C. C. Deam, no. 21,975. Illinois: Cal- 

 umet Lake, Chicago, 1900, Agnes Chase, no. 1,426. Wisconsin: 

 1861, T. J. Hale. 



Forma laevigata forma nov. Panicum longisetum Torr., Amer. 

 -Tour. Sci. iv. 58 (1822). E. longearistata Nash in Small's Fl. S. E. 

 U. S., 84 (1903). — Vaginis glabris. Massachusetts to Illinois and 

 Arkansas (South Carolina to Louisiana, Nash). Massachusetts: 

 W T est Barnstable, 1916, St. John & Hunnewell; Chilmark, 1894, 

 S. Harris. New York: Oswegatchie River at DeKalb, 1915, 0. P. 

 Phelps, no. 1,107. Illinois: Fox River, 1821 (type of Panicum 

 longisetum Torr. in Herb. Columb. Univ.). Arkansas (?): Hale 

 (type of F. longearistata Nash in Herb. Columb. Univ.). The spe- 

 cific names of Torrey and Nash would be so inappropriate if used 

 for this form that a new name has been selected. 



8. E. oplismenoides (Fourn.) Hitchcock, Contr. U. S. Nat. Herb. 

 xxii. pt. 3, 136 (1920). Berchtoldia oplismenoides Fournier, Mex. 

 PI. ii. 41 (1886). — Low grounds; northern Mexico to Guatemala. 

 Specimens examined were: Mexico: Cananea, Sonora, 1910, Rick- 

 ets; Sierra Madre, Chihuahua, 1887, C. G. Pringle, no. 1,404; Dur- 

 ango, 1896, F. Palmer, no. 253 in part; 1910, A. S. Hitchcock, no. 

 7,616; Toluca, Mexico, 1910, Hitchcock, no. 6,914. Guatemala: 

 Estanzuela, Santa Rosa, 1892, Hcyde & Lux in exsic. J. D. Smith, 

 no. 3,911. 



This plant resembles E. holciformis superficially and was at first 

 placed by the writer with that species; but the narrow panicle, ap- 

 proximate, broader and more obtuse lower glume, general absence of 

 a ligule, shorter anthers, and annual habit render it abundantly dis- 

 tinct. In about one-half of the specimens the lower palet was ab- 

 sent, and in one specimen some spikelets possessed the palet while 

 others did not. No spikelets were found with the lower floret stain- 

 inate as mentioned by Fournier. 



9. E. holciformis (HBK.) Chase, Proc. Biol. Soc. Wash. xxiv. 

 155 (1911). Oplismcnus holciformis HBK. Nov. Gen. et Sp. i. 88 

 (1815). — Ditches and swamps, Central Mexico to Central America. 

 Mexico: Lower California near Guadalupe, 1865-66, Bourgeau, no. 

 910; Durango, 189(5, F. Palmer, no. 253; Acambaro, Guanajuato, 



