Scirpus CYPERACEAE Scirpus 



f] f. Smithii Gray 



Rare: Holly Oak (NC), Commons, 17 Aug. 1896 (A). 

 A northern plant. 



Var. setosus Fern. 



Rare; Milford (S), C. *S. Williamson, 1 Sept. 1908 (A). 



Y\ S. americanus Pers. Chair Maker's Rush. 



Common, on maritime shores, and borders of fresh and brackish 

 streams, Piedmont and Coastal Plain. Mid-June to mid-Sept. 



. f \S. Olneyi Gray. 



Common in salt marshes; infrequent in shallow fresh water; 

 Coastal Plain. Late June to Sept. 



S. etuberculatus (Steud.) Ktze. (*S. cylindricus (Torr.) Ktze.) 

 Canby's Bulrush. 



Rare: "in streams, Salisbury" (Wi), Canhy, in 1864 (D) and 

 Sept. 1894 (A); same. Commons, 31 Aug. 1863 (A). 



Reaches the northern hmit of its range in Sussex County. 



Us. validus Vahl var. creber Fern, {S. validus of Gray's Man., ed. 

 7. See Rhodora 45, 283. 1934.) Great Bulrush. 

 Common in ponds, streams and tidal mud, Piedmont and 

 Coastal Plain. June to Aug. 



S. fluviatilis (Torr.) Gray. River Bulrush. 



Frequent on river shores and salt margins. Piedmont, and 

 Coastal Plain as far south as Worcester County, where it appears 

 to reach its southern limit. June to Sept. 



S. robustus Pursh. Salt Marsh Bulrush. 



Common in salt marshes of the Coastal Plain. July to Sept. 



S. novae-angliae Britton. 



Rare: brackish marsh, Augustine Beach (NC), Pennell, 7809, 3 

 Aug. 1916 (A). 



S. expansus Fern. {S. sylvaticus of Gray's Man., ed. 7. See Rho- 

 dora 45, 293-295. 1943.) 

 Not often collected: swamp near Centreville (NC), Commons, 

 22 July 1868 (A) ; boggy soil along Pike Creek (NC), Canby, 28 July 

 1896 (D); Conowingo (Ce), Long & Bartram, 1 June 1913 (A); l}i 

 mi. s. w. of Elkton (Ce), Benner, 25 June 1932 (A). 



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