66 MISSISSIPPI STATE GEOLOGICAL SURVEY [Bull. 
SPARGANIACEAE. Bur-reed Family. 
SPARGANIUM. Bur-reed. - 
Sparganium androchladum (Engelm.) Morong (S. simplex 
androchladum Engelm.) 
Shallow ponds and marshes. Oxford; Iuka. 
Geol. Surv. Herb. 
NAIADACEAE. Pond Weed Family. 
Potamogeton L. Several undetermined species. 
RUPPIA L. Ditch grass. 
Ruppia maritima L. 
Brackish pools along the Coast and Coastal Islands 
(Tracy). June. 
SCHEUCHZERIACEAE. Arrow-Grass Family. 
TRIGLOCHIN. Arrow-grass. 
Triglochin striata Ruiz & Pav. 
Marshes along the Coast and Coastal Islands. (Tracy). 
June and July. 
ALISMACEAE,. Water-Plantain Family. 
ALISMA L. Water Plantain 
Alisma plantago aquatica L. 
Marshes throughout the state. 
ECHINODORUS Engelm. 
Echinodorus radicans, (Nutt.) Engelm. (Sagittaria radicans 
Nutt. ) : 
Marshes in Coastal Counties, mostly; Tunica. May-July. 
Geol. Surv. Herb. 
SAGITTARIA L. Arrowhead. 
Sagittaria latifolia Willd. (S. variabilis Engelm.) 
Marshes throughout the State. Jackson; Lumberton. Sep- 
tember. 
Geol. Surv. Herb. 
