Limnohium HYDROCHARITACEAE— GRAMINEAE Bromus 

 HYDROCHARITACEAE (Frog's Bit Family) 

 Limnobium Richard 

 L. Spongia (Bosc) Steudel. Frog's Bit. 



Rare: shallow ditches, Delaware City (NC), Commons in 1871, 

 1874, 1880 (A) ; border of Dragon Marsh, ^ mi. s. w. of Delaware 

 City, R. R. Tatnall, 3427, 26 June 1937; 3439, 13 July 1937; 3853, 

 16 June 1938; and 4378, 16 Aug. 1939 (T, A, P, G), at the last date 

 abundantly flowering and fruiting; in Furnace Creek (Ce), F. 

 Shreve, No. 403 (U). 



A southern species, reaching its northern limit, for the Coastal 

 Plain, at our stations, or possibly in southern New Jersey. 



GRAMINEAE (Grass Family) 

 In the Grasses, the sequence of genera and species is that of 

 Hitchcock: "Manual of the Grasses of the United States" (1935). 



Bambuseae 

 Sasa Makino & Shibata 

 S. japonica (S. & Z.) Makino. 



This introduced Bamboo is growing in a dooryard 2^ mi. w. 

 s. w. of Libertytown (Wo), about ^ mi. n. w. of the bridge over 

 Ninepin Creek: R. R. Tatnall, 4757, 13 Oct. 1940 (T). 



Festuceae 

 Bromus L. Brome Grass. 

 B. inermis Leyss. Smooth Brome. 



Escaped from cultivation at the University of Delaware Agric. 

 Exp. Sta., Newark (NC), 0. A. Pope, in 1928 (UD). Introd. from 

 Europe. 



B. purgans L. Canada Brome. 



Common in rocky woods of the Piedmont. June, July. 



B. latiglumis (Shear) Hitchc. ' 



Rare, in alluvial soil along streams: Bald Friar (Ce), Van Pelt, 

 1 Sept. 1909 (A); near Sharptown (Wi), Otis, 8 Oct. 1914 (D); 

 woods 1 mi. s. s. w. of Rowlandsville (Ce), R. R. Tatnall, 4722, 8 

 Oct. 1940 (T, G). Sept., Oct. 



B. brizaeformis Fisch. & Mey. Rattlesnake Chess. 



Occasional in waste ground: Wilmington, Commons, 6 July 1898 



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