Steele Additions to the Plora of Washington. 5i 



n88/. Panicum polyanthes Schultes. (P. microcarpo?i of Ward's 



Catalogue.) 

 District Line, August 4, 189G. Also Four Mile Run. 



1 187. Panicum Ravenelii Scribn. & Merrill. (P.paueiftorum of Ward's 



Catalogue.) 

 Slope above Canal road, May 24, 1898, June 12, 1900. 



*n88<. Panicum Scribnerianum Xash. 

 Kenilworth, June 9, 1899. 



1 1 88. Panicum dichotomum L. 



Of the dichotomum group I have, as determined by Mr. E. D. Merrill, 

 besides dichotomum itself: AtUtntifuin Xash, barbulatum Michx., Clutei 

 Xash, Columbianum Scribner, commuttttinit of authors, not of Schultes, 

 implicatum Scribner (doubtful species), hniuyinosumEU., la.nflorum Lam., 

 lueidum Ashe, unciphyllum Trin. The lucidum takes the place of sphay- 

 nicolum Xash as to this locality. 

 ii92. Panicum miliaceum L. 



Waste ground, several places. 

 *u8or. Panicum cap! Hare Gattingeri Xash. 



Plummer's Island, August 24, 1897. Also Great Falls and Bethesda. 

 ii8o/;. Panicum flexile (Gattinger) Scribn. 



Xear Glen Echo, September 11, 1896; Linnaean Hill Road, September 

 27, 1899. 



*n8orf. Panicum minimum Scribn. & Merrill. (P. minus of Britt. & 

 Brown.) 



South Arlington near Four Mile Run, August 27, 1899; also Bennings. 



*ii93. Chaetochloa imberbis perennis (Hall) Scribn. & Merrill. 



Kenilworth, first half of August, 1898, and in many places since; 

 most abundant near Beaver Dam Branch; also at Jackson City, and 

 near Brightwood swamp. It appears to be most at home in swamps and 

 moist ground, but I have seen it in dry soil at West Eckington and even 

 on a dry southern slope near the Massachusetts Avenue Bridge. 

 1193. Chaetochloa verticillata (L.) Scribn. 



Occurs occasionally in waste ground, but appears never to multiply 

 much. 

 ii72u. Phalaris arundinacea L. 



Wet field, Jackson City, west of road, June 14, 1890 and June G, 1899. 

 1117. Aristida gracilis Ell. 



Arlington, near the river, and also on the Rockville road. The form 

 known as variety dcpitupcrata Gray was found at Bennings, September 

 18, 1897. 

 1108. Muhlenbergia Mexicana Trin. 



A form with long culms and slender panicles, corresponding presuma 

 bly to the variety filiformis, was collected along the Glen Echo railroad. 

 The type has been found in several places. 



