64 Journal of the Mitchell Society [October 



FAMILY TYPHACE^ 



Typha latifolia L. Broad-leaved cat-tail. Abundant in marsh forming inner 



side of island. 

 Typha angustifolia L. Narrow-leaved cat-tail. The principal constituent of 



marshy patches bordering Sound. 



FAMILY ZANNICHBLUACELE 



Potamogeton perfoliatus L. Clasping-leaved pondweed, redhead grass. Com- 

 mon in Sound, especially over muddy bottoms. 



Potamogeton foliosus Rafinesque. Leafy pondweed. Scarce in Sound; com- 

 mon in ponds and streams of marsh. 



Potamogeton pectinatus L. Sago pondweed; foxtail grass; extremely abun- 

 dant in Sound; the dominant plant; fr. Aug.-Oct. 



Ruppia maritima L. Wigeon grass. Scattered in Sound; apparently not as 

 common as in 1909. Ripe akenes Sept. 



FAMILY NAIADACE>E 



Naias flexilis (Willdenow) Rostkovius and Schmidt. Bushy pondweed. Abun- 

 dant in Sound. 



FAMILY ALISMACE^ 



Sagittaria latifolia Willdenow. Wapato. Common in marsh. 



Sagittaria teres Watson. Goose grass. In 1909 this was abundant in very 



shallow water along shore of Sound; in 1918 I did not see it; fl. Sept. 

 Sagittaris graminea Michaux. Scarce in shoal water of Sound; fls. Sept. 

 Sagittaria subulata (L. ) Buchenau. Abundant on mud along edge of marsh. 



fls. 



FAMILY VALLISNERIACE.^ 



Philotria canadensis (Michaux) Britton. Waterweed. Scattering near shore 



in Sound. 

 Vallisneria spiralis L. Wild celery. Abundant in Sound; especially along 



channels and in places over soft muddy bottom; also in creeks in marsh; 



fls. Aug.-Sept., fr. October. 



FAMILY GRAMINE.^ 



Erianthus saccharoides Michaux. Plume grass. Scattered in marsh ; mat. fr. 

 Schizachyrium scoparium (Michaux) Nash. Broom beard-grass. Common; 



mat. fr. 

 Andropogon virginicus L. Broom-sedge. Common; mat. fr. 

 Syntherisma sanguinale (L.) Dulac. Crab-grass. Abundant weed in fields; 



mat. fr. 

 Paspalum longipilum Nash. In old pine woods; mat. fr. 

 Paspalum distichum L. Joint grass. Along roads. 

 Echinochloa crusgalli (L) Beauvois. Common, along ditches; fr. 



