54 MISSISSIPPI STATE GEOLOGICAL SURVEY [Bull. 
Herbaceous plants common on the sandy beaches are: 
Amphistelma filiforme Cenchrus tribuloides 
Cenchrus megacephalus Physalis angustifolia 
Linum Foridanum Oenothera humifusa 
Croton maritimus Chrysopsis scabrella 
Solanum sisymbriifolium Opuntia pes-corvi 
Solanum alaeagnifolium Panicum amarum 
Solanum aculeatissimum Tpomcea saggitata 
Solanum gracile 
Cakile fusiformis Salsola kali 
Dondia linearis Sesuvium portulacastrum 
Strophostyles helvolus Euphorbia polygonifoha 
Of characteristic species on dunes a little back from the 
beach, a few dune formers and sand binders are given here: 
Ilex vomitoria Myrica cerifera 
Serenoa serrulata Tpomoea pes-caprae 
Ceratiola ericcides Tpomoea acetosaefolia 
Uniola paniculata Panicum halophilum. 
On live cak and pine flats immediately back from the beach 
dunes, especially on the larger islands, a few typical species 
occur, as given here: 
Serenoa serrulata Smilax auriculata 
Myrica cerifera Quercus geminata 
Cenchrus megacephalus Pinus taeda 
Cenchrus tribuloides Froelechia Floridana 
Calamintha coccinea Polygonella Americana 
Erythrina herbacea Jatropha stimulosa 
Eryngium yuccaefolium  syn- Lechea tenuifolia 
chatum Trilisa cdoratissima 
Cassia chamaechrista Diodia teres 
Cladonia rangiferina. 
Forms that are found in salt marshes along the coast and - 
upon the chain of islands, are the following: 
Lycium Carolinianum Heterotheea Lamarkii 
