204 MISSISSIPPI STATE GEOLOGICAL SURVEY [Bull. 
CACTACEAE. Cactus Family. 
OPUNTIA Mill. Prickly Pear. 
Cpuntia humifusa Raf. (O. Rafinesquii Engelm.) Rafinesque’s 
Prickly Pear. 
Throughout the state near dewllings and pastures. Not 
very common. Oxford. April-May. 
Opuntia opuntia (L.) Coult. (O. vulgaris Mill.) Common Prick- 
ly Pear. 
In dry sandy soil throughout the state. Coastal Islands 
(Tracy). May. 
Opuntia pes-corvi Le Conte. Crow-Foot Cactus. 
Drifting sands along the coast (Mohr); Coastal Islands 
(Tracy). April-May. 
THYMELEACEAE. Mezereum Family. 
DIRCA L. Moose-Wood. 
Dirca palustris L. Leatherwood. 
Rich wooded slopes. Reported in the state by Wailes 
(Agri. and Geol. of Mississippi. B. L. C. Wailes. 1854). 
LYTHRACEAE. Loosestrife Family. 
ROTALA L. 
Rotala ramosior L. Koehne (Ammannia ramosior L.) Branched 
Rotala. 
Lowlands, and bordering ditches. Rankin Co. (Hilg. Ms.). 
July. 
AMANNIA UL. 
- Ammannia coccinea Rottb. (A. latifolia Torr. & Gray). Sear- 
let Ammannia. k 
Wet lowland fields and waste places. Hinds Co.; War- 
ren Co. August. 
LYTHRUM UL. Loosestrife. 
Lythrum alatum Pursh. Wing-Stemmed Loosetrife. 
Amory; Scooba; Grenada; Rosetta; Madison Co. (Hil. 
