MANUAL OF THE GRASSES OF THE UNITED STATES 



511 



characters are not coordinated with 

 habitat.) — Salt or brackish marshes 

 along the coast, and margins of tidal 

 streams, Massachusetts to Florida 



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3. Spartina foliosa Trin, (Fig. 743.) 

 Culms 30 to 120 cm. tall, stout, as 

 much as 1 cm. thick at base, some- 

 what spongy, usually rooting at the 

 lower nodes; blades 8 to 12 mm. wide 

 at the flat base, gradually narrowed 

 to a long involute tip, smooth through- 

 out; inflorescence dense, spikelike, 

 about 15 cm. long; spikes numerous, 

 approximate, closely appressed, 3 to 



Figure 742. — Spartina cynosuroides. Panicle, X 1 ; 

 spikelet, X 5. (Boettcher 444, Va.) 



Figure 743. — Spartina foliosa. Panicle, X 1; spikelet 

 X 5. (Heller 13871, Calif.) 



5 cm. long; spikelets very flat, 9 to 

 12 mm. long, occasionally longer; 

 glumes firm, glabrous or hispid-ciliate 

 on the keel, acute, the first narrow, 

 half to two-thirds as long as the 

 second, smooth, the second sparingly 

 hispidulous and striate-nerved ; lem- 

 ma hispidulous on the sides, mostly 

 smooth on the keel, shorter than the 

 second glume ; palea thin, longer than 

 the lemma. % (S. leiantha Benth.) 

 — Salt marshes along the coast from 

 San Francisco Bay, Calif., to Baja 

 California. 



4. Spartina alterniflora Loisel. 

 Smooth cordgrass. (Fig. 744.) 

 Smooth throughout or the margins 

 of the blades minutely scabrous, 0.5 

 to 2.5 m. tall; culms soft and spongy 

 or succulent at base, often 1 cm. or 

 more thick; blades flat, tapering to a 

 long involute tip, 0.5 to 1.5 cm. wide; 

 spikes appressed, 5 to 15 cm. long; 

 spikelets somewhat remote, barely 

 overlapping or sometimes more im- 

 bricate, mostly 10 to 11 mm. long; 

 glumes glabrous or hispid on the 

 keel, the first acute, narrow, shorter 

 than the lemma, the second obtusish, 



