CYPEBACEAE. 63 



14. Eleocharis Tenuis (Willd.) Schultes. M. p. 171. Wet soil. Early 



summer. 



15. Eleocharis acuminata (Muhl.) Nees. M. p. 17L Wet soiL Summer. 



Bucks— Sellers ville (Ft.). 



16. Eleocharis intermedia (Muhl.) Schultes. . .M.'l'p. 171. Marshes. Sum- 



mer. 

 Philadelphia— (P.). 'Bucks— Point Pleasant, Moyer' (P.). Lancaster 

 — (P.). 'Northampton— (P.). 

 Ocean— Forked. Riyer (He.). . Euntefdon— Bull's Island, Mart. (B.C.). 



17. Eleocharis' rostellata Torr. M. p. 171. Marshes. Summer. 



Cdpe May — Denmsville, E. 'Diffenbau'gh (B. C), Cape May (Ha.'jr 

 (He.). Atlantic— Atlantic City (C). 

 New Castle— Collins Beach. • 



4., STENOPHYLLitTS Baf. 



l;i Stenophylltjs oaeillaris (L.) Britton, M. p;il73. Sandy fields. 

 Summer. 



5. FIMBBISTYLIS Vahl. 



Style 2-cleft; achene lenticular or biconvex. 



Culms 2-9 dm.tjall; spikelets umbellate ; style mostly pubescent. 



Perennial; leaves involute. , ., ! :,; 1. F. castanea. 



Annual; rqots fibrous ; leaves 'flat. "' 2. F. laxa. 



Culms 2-10 cm. tall; very slender; spikelets capitate; style , glabrous 



below. : ■ ' 3. F. Vahlii. 



Style 3-clef t ; achenes 3-angled. 4. F. autumnalis. 



1. Fimbristtlis castanea (Michx.) Vahl. M. p. 174. Salt marshes. 



Summer. , , _ . t , , , : > Mi . .. , 



New Jersey— Frequent. 

 New Castle— Near tide-water. Scarce. 



2. Fimbristylis laxa Vahl. , M. p. 174. Low ground.. Summer. ,,,,, 



.Philadelphia— (P.). Delaware— Mineral Hill (He.). Chester— Willis- 

 town (VP,). Lancaster— (P.). . . \ < ; 

 New Castle— Serpentine, Dixon's, Commons. m , : i 



3. Fimbristylis Vahlii (Lam.) Link. Mj p. 174. In moist soil. Summer. 



Philadelphia— (P.). 1 Chester— (P.). Lancaster^- (P.). , , ',> 



4. Fimbristylis autumnalis (L.) R. & S. M. p. 174. Low grounds. 



Summer. 



6. SCIEPUS L. Club-Bush or Bulrush. 



Spikelet solitary, terminal, bractless or subtended by a single bract or short 

 leaf. 

 No involucral bract. 1. S. nanus.' 



Involucral bract present, erect.' 



Bract shorter than, or but little longer than the spikelets;, plant 



not aquatic. ■ ' 2. <S. planifolius. 



Bract at least twice as long as the spikelet; plant aquatic. 



". '• i -3. S. subterminalist 



Spikelets normally more than 1, .usually several or numerous, often appear- 

 ing lateralis involucral bract only 1. 

 Spikelets few, 1?12, appearing lateral. 



Culms not sharply 3-angled; achene plano-convex; annuals. " 



