GBAMINEAE. 47 



43. SPARTINA. Schreb. 



, First scale awn-pointed, equalling the third; sec,ond long-awned. 



1. S. cynosuroides. 

 First scale acute, shorter than the third. 



First scale strongly scabrous-hispid on the keel. 



Leaves 1.25 cm, .wide or more, flat. . ■ , ■ , 2. S. polystachya. 



Leaves 6 mm. wide or less.. 3. S. patens. 



First scale Smooth tin thfe keel or occasionally slightly scabrous. 



■ ' ' '• •■• > 4. S. 'strieta. 



1. Spartina cynosur'oikes'XL.) Willd. 'Fresh-water Cord-grass. M. p. 120. 



Banks of rivers. Summer. 

 Philadelphia — (P.). Bucks— Durham, Buth (Fr.). Chester — (P.). 

 Lancaster— (P.). Dauphtin-*-(P.). ■'■, \i ' 



New Jersey— Common. ,:.■',' 



New Castle — Belleview, Tatnall and Commons. 



2. Spartina 1 polystacHya (Michx.) Ell. ; Salt Beed-grass. M. p. 120. Salt 



or brackish water. Summer. , a •, 



3. Spartina patens (Ait.) Muhl. Salt Meadow-grass. ' M. p. 120. Salt 



marshes and sea-beaches. 

 Philadelphia — Ballast (P.). 

 New Jersey — Common. "'•' • ' 

 -' New- Castles Collins'' Beach, rare. ■■','.! .-.,. ,t 



4. Spartina stricta (Ait.) Both. Salt Marsh-grass. M. p. 121. Salt 



marshes. Summer. 

 4a., Spartina stricta alterniflora (Lois.) A. Gray. M. p. 121. Salt, 

 marshes. Summer. 

 Salem — Banks of Delaware (ft). Cupe May— Cape May (ft). Atlan- 

 tic — Atlantic City (He.). ' Qcean— Seaside' Park (ft), 



44. GYMNOPOGON Beauv. 



Spikes bearing spikelets their whole length ; awn longer than flowering 



scale. . ,,i;; ., , ,:.. ,1. G. ambiguus. ■ 



Spikes bearing spikelets above the middle; awn shorter than flowering 



scale. 2. G. Irevifolius. 



1. Gymnopogon ambiquus (Michx.) B. S. P. M. p. 122. Dry sandy soil. 



Late summer. 

 Camden — Griffith 's Swamp (ft), Berlin (St.), Lindenwold ("VP.). 

 Gloucester — Clarksboro (ft), near Mickleton (He.), Tomlin (Ke.), 

 Swedesboro (Li.). Atlantic— Hammonton (ft). 



2. Gymnopogon brevifolius Trin. M. p» 122. Dry soil. Late summer. 



Gloucester— Near Mickleton (He.), near Swedesboro (Li.). 



45. ATHEBOPOGON Muhl. 



1. Atheropogon curtipendtjla (Michx.) Fourn. Muskit- grass. M. p. 123. 

 Dry soil. Summer. 

 Chester— Serpentine, C. E. Smith (Fu.), near West Chester (Pr.). Lan- 

 caster— (P.). Northampton^- (P.). 



Gloucester— Mickleton (He.), Swedesboro (Li.). 



