GRAMINEAE. 47 



43. SPARTINA Schreb. 



First scale awn-pointed, equalling the third; second 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. polrjstachya. 



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



First scale smooth on the keel or occasionally slightly scabrous. 



4. S. stricta. 



1. Spaktina cynosuroides (L.) Willd. Fresh-'icater Cord- grass. M. p, 120. 



Banks of rivers. Summer. 

 Philadelphia— {V.). jBticAs— Durham, Euth (Fr.). Chester— {V.). 

 Lancaster— {V.). Dauphin— (F.). 

 New Jersey — Common. 

 Neiv Casfie— Belleview, Tatnall and Commons. 



2. Spartina polystachya (Michx.) Ell. Salt Eeed-grass. M. p. 120. Salt 



or brackish water. Summer. 



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



marshes and sea-beaches. 

 Philadelphia— JiaHast (P.). 

 New Jersey — Common. 

 New Castle— Collins' Beach, rare. 



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



marshes. Summer. 

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

 marshes. Summer. 

 Salem— Banks of Delaware (C). Cape Ifoi/— Cape May (C). Atlan- 

 tic—Atlantic City (He.). Oceon— Seaside Park (C). 



44. GYMNOPOGON Beauv. 



Spikes bearing spikelets their whole length ; awn longer than flowering 

 scale. 1. G. ambiguus. 



Spikes bearing spikelets above the middle ; awn shorter than flowering 

 scale. 2. G. brevifolius. 



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



Late summer. 

 Cawde« — Griffith's Swamp (C), Berlin (St.), Lindenwold (VP.). 

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

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



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



Gloucester— ISl ear Mickleton (He.), near Swedesboro (Li.). 



45. ATHEROPOGON Muhl. 



1. Atheropogon curtipendula (Michx.) Fourn. Muslit- grass. M. p. 123. 

 Dry soil. Summer. 

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

 caster- (P.) . Northampton— (P.) . 



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



