of Mississippi and Louisiana 93 



or shell beaches. 



portulacastrum L. Rather common on damp sand 



Ca ryoph yllacea e 



Scleranthus animus L. Occasional on sandy islands. 

 Siphonychia corymbosa Small. Occasional on Ship Island, 

 which is the type locality, and abundant on Cat Island. 

 Stipulacida setacea Michx. Cat and Breton Islands. 



Nymphaeaceae 



Castalia tuberosa (Paine) Greene. In pond on Cat Island. 



Menispermaceae 



Islands. 



Cebatha Carolina (L.) Britton. Occasional on Cat and Breton 



Lauraceae 



Persea pubescent (Pursh) Sarg. Cat Island 



Papaveraceae 



Eads. 



Argemone Mexicana L. A few plants on ballast ground, Port 



Cruci ferae 

 fusiformis Greene. On sand and shell beaches, Bird, 



Battledore and Breton Islands. 



land 



Lepidium Virginicum L. Battledore and Sam Holmes Is- 



s. 



Droseraceae 



Drosera rotundifolia L. Wet sand, Cat Island. 



ROSACEAE 



Rubus trivialis Michx. Cat and Breton Islands. 

 Rubus sp. An unidentified species belonging to the trivialis 

 group is very abundant on one of the larger mud lumps, where it 

 "lakes a growth so rank and dense as to be almost impenetrable. 



MlMOSACEAE 



Acuan brachyloba (BentrO Kuntze. In field at South Pass. 



Mi 



(Michx.) Kuntze. On shell beach, He a Pitre. 

 llosa T. & G. Common at South Pass. 



