330 Bulletin No. 205 [March, 



This species is usually found in the water or in very damp soil. It 

 gets its common name from the roughness of the leaves, which often 

 cut the hands if one attempts to pull up the plant. 



ILLINOIS SPECIMENS: Without locality, Vasei/; iioithern Illinois, aZ. S. Bcbh. 

 CHAMPAIGN CO. Urbana, Seymour, Oct., 1880 ; Crystal lake, Urbana, Clinton, Sept., 

 1899; Mahomet, Gibbs and Clinton, Oct., 1898. cook go. Evanston, Shipman, 

 Sept., 1875; Chicago, Lansing, Sept., 1898; Palos Park, TJmbach, Sept., 1909. du 

 PAGE CO. Hinsdale, Smith, Sept., 1902. ford co. Paxton, Moffatt, Sept., 1897, 

 FULTON CO. Canton, Wolf. jackson co. Makanda, Seymour, Aug., 1880. 

 KANKAKEE CO. Kankakee, De Selm, Sept., 1913. lake co. South of Lake Villa, 

 Gleason and Shobe 228; Libertyville, Sherff, Sept., 1912, Livingston co. Chats- 

 worth, Wilcox, July, 1902. mchenry co. Algonquin, Nason, Aug., 1878. ma- 

 COUPIN CO, Carlinvihe, Robertson, Aug., 1880, Marshall co. Near Henry, Meek, 

 Sept., 1906. MENARD CO. Athens, Hall, Sept., 1864. ogle co. Oregon, Waite, 

 Aug., 1884. PEORIA CO. Peoria, Brendel; Peoria, McDonald, Sept., 1896, and 

 1904. ST. CLAIR CO. Mascoutah, Welsch. stark co. Wady Petra, V. H. Chase, 

 1910. vermilion CO. Butler Branch creek, Catlin, Lansing, Sept., 1912. wa- 

 BASH CO. Hanging Eock, SchnecJc; Mt. Carmel, Schneck, Oct., 1876; Greathouse 

 creek, Schneck, Sept., 1880. Shannon's swamp, Schneck, Sept., 1879. will co. 

 Without locality, Moffatt, Sept., 1891; Joliet, Skeels, Aug., 1904, winnebago co. 

 Fountaindale, M. S. Bebb. 



Homalocenchrus virginicus Willd. 

 White Grass (Fig. Ill) 



Leersia virginica, Lapham '57, 544, 560 (Plate 1, Fig. 1) ; Babcock '73, 96; 

 Patterson '76, 49; Flagg '78, 279; Brendel '87, 63; Higley and Raddin '91, 140; 

 Huett '97, 129. 



Culms slender, branched, 1 to 3 feet tall, smooth, the nodes pubes- 

 cent and sometimes the culm for a short distance below the node; 

 sheaths smooth, blades thin, slightly rough on both surfaces, 2 to 6 

 inches long, 2 to 6 mm. wide; spikelets 2.5 to 3 mm. long. 



This species is often found in damp woods as well as along the 



margins of streams and ponds. 



ILLINOIS SPECIMENS: Without locality. Hall; without locality, Vasey. 

 champaign CO. Urbana, Clinton, Sept., 1899; Urbana, Waite, Aug., 1887. cook 

 CO. Palos Park, Umbach, Sept., 1909; Beverly Hills, Eobert Bebb, Aug., 1904; 

 Bowmanvil, Chicago, Gates. DU page co. Hinsdale, Smith, Aug., 1902. jackson 

 CO. Without locality, French, Aug., 1905. kankakee CO. Baker creek, Kanka- 

 kee, De Selm, Sept., 1913. mchenry co. Algonquin, Nason, Aug., 1878. macon 

 CO. Decatur, Clokey, Sept., 1898. menard co. Without locality. Hall; Athens, 

 Hall in 1864. peoria co. Glasford, Wilcox, July, 1902 ; Peoria, McDonald, Aug., 

 1895; Peoria, Brendel; Princeville, V. H. Chase, Aug., 1900. ST. clair co. With- 

 out locality, Brendel; Mascoutah, Welsch. wabash co. Mt. Carmel, Waite, Aug., 

 1887; Mt. Carmel, Schneck, Aug., 1900; Hanging Rock, Schneck, Sept., 1879. 



15. PHALARIS L. 



These grasses are cither annual or perennial and have laterally 

 flattened, apparently one-flowered spikelets in which the glumes are 

 long, exceeding the hardened lemma and ])alea. There are two small 

 scales at the base of the floi-et which represent stei-ile lemmas. The 

 leaves are flat, the ligule thin, membranous, 3 to 5 mm. long. The 

 inflorescence is of spike-like, or very narrow panicles. 



