of Mississippi and Louisiana 89 



T. purpurea (Walt.) Chapm. On dry, sandy knolls, Cat, 

 Hog, Battledore and Ship Islands. 



Uniola longifolia Scribn. Occasional in moist woods, Cat 

 Island. 



* U. paniatlata L. Very abundant on Ship, Cat and Breton 

 Islands, the larger lumps sometimes producing as many as sixty 

 culms, and forming a striking feature of the dry and almost naked 

 sand hills. 



Cyperaceae 



Cladium effnswn Terr. On borders of ponds, Ship, Cat and 

 Breton Islands ; common at South Pass and Port Eads. 



* 



Cyperus articulates L. One locality on a dry, sandy beach, 

 Cat Island. 



*?fC. cylindricus (Ell.) Britton. Larger heads and broader 

 leaves than those of the eastern type. Common on Ship and Cat 

 Islands ; occasional on Breton Island and at Port Eads. 



C. erythrorhizos Muhl, Breton Island. 



C. ferox Vahl. Cat and Breton Islands, not common. 



C.flavus (L.) Boeckl. On ballast ground, Port Eads. 



C. Haspan L. On wet, sandy soil, Ship and Cat Islands. 



C. inflexus Muhl. South Pass. 



C. Lecontei Torr. Common on damp, sandy soil on the larger 

 islands ; the rootstocks often two or three metres in length. 



C. lutescens Torr. & Hook. Port Eads ; Battledore Island. 



C. microdontia Torr. Sand, Breton Island. Not common. 



C. polystachyns Rottb. Widely distributed in tropical regions. 

 On ballast ground, Port Eads. The Torrey Herbarium contains 

 a specimen of this collected in New Orleans many years ago, 

 probably about 1820, and one from St. Augustine, Fla., 1876, A. 

 P- Garber. 



C. prolixus H.B.K. In flower only; unknown hitherto in 

 North America ; ballast, Port Eads. 



C: Surinamensis Rottb. On ballast ground, Port Eads. Doubt - 

 kss adventive from the Caribbean region. 



C. vegetus Willd. In wet meadow, South Pass. 



C. virens Michx. In one locality at South Pass and on Breton 

 Island. 



Dichromcna colorata (L.) A. S. Hitchcock. Rather common 



