MANUAL OF THE GRASSES OF THE UNITED STATES 



493 



Figure 1046.— Distribution of 

 Spartina spartinae. 



a 



•JJ 



m 



closely appressed, 1 to 1.5 cm long; spikelets 6 to 8 mm long; glumes, 

 ciliate on the keel, acute, the first about half as long as the second; 



lemma nearly as long as second 

 glume, ciliate on keel; palea as 

 long as lemma, obtuse. 91 — 

 Alkaline meadows and plains, 

 Saskatchewan to British Colum- 

 bia, south to Colorado and 

 through eastern Washington to 

 Arizona (fig. 1049). 



8. Spartina patens (Ait.) Muhl. 

 Saltmeadow cordgrass. (Fig. 

 1050.) Culms slender, mostly 

 less than 1 m tall, with long 

 slender rhizomes; blades some- 

 times flat but mostly involute, 

 less than 3 mm wide; spikes 2 to 

 several, appressed to somewhat 

 spreading, 2 to 5 cm long, rather 

 remote on the axis; spikelets 7 to 

 12 mm long; first glume about 

 half as long as the floret, the second 

 longer than the lemma; lemma 

 5 to 7 mm long, emarginate at 

 apex; palea a little longer than the 

 lemma. Ql — Salt marshes and 

 sandy meadows along the coast, 

 Quebec to Florida and Texas, 

 and in saline marshes inland, 

 New York and Michigan (fig. 

 1051). The smaller, more southern form, with 

 slightly smaller and more closely imbricate 

 spikelets has been distinguished as S. juncea 

 (Michx.) Willd. (S. patens var. juncea 

 Hitchc.) — New Jersey 

 to Florida. Spartina 

 patens var. caespit6sa 

 (A. A. Eaton) Hitchc. 

 An ambiguous form 

 resembling S. patens, 

 but growing in large 

 tufts without rhizomes. 

 Ql — Salt marshes, 



New Hampshire to New York. Larger tufted 

 forms with rhizomes are found at Chesapeake 



Figure ] 047.— Spar 

 Una baker i. Pan- 

 icle, X 1; spikelet, 

 X 5. (Type.) 



Figure 1049.— Distribution of 

 Spartina gracilis. 



Figure 1048.— Spartina gracilis. 

 Panicle, X 1; spikelet, X 5. 

 (Rydberg 2080, Mont.) 



Beach, Md., and Virginia Beach, Va. 



100. CTENIUM Panz. 



(Campulosus Desv.) 



Spikelets several-flowered but with only one perfect floret, sessile 

 and pectinately arranged on one side of a continuous rachis, the 

 rachilla disarticulating above the glumes; first glume small, hyaline, 



