212 MISSISSIPPI STATE GEOLOGICAL SURVEY [Bull. 
POLYTAENIA DC. 
Polytaenia Nuttallii DC. (Tordylium Americanum Nutt.) Nut- 
tall’s Polytaenia. 
Prairie region (Mohr). Calhoun Co. (Hilg. Ms.). July. 
THASPIUM Nutt. Meadow Parsnip. 
Thaspium barbinode (Michx.) Nutt. (Ligusticum barbinode 
Michx.). Barbed Meadow Parsnip. 
Shaded banks in the prairie region. Okolona. April-May. 
Thaspium trifoliatum aureum (Walt.) Britton (Thaspium au- 
rem Nutt.) Go.den Alexander. 
Dry copses on hillslopes. Tishomingo Co. (Allison) ; 
Itawamba Co.; Ripley; West Point; New Albany Starkville 
(Phares) ; Oxford; Jackson. May. 
Geol. Sur. Herb. Allison Herb. 
CYNOSCYADIUM DC. 
Cynoscyadium pinnatum DC. Dog Parsley. 
Dry hillslopes. Meridian. August. 
ERYNGIUM L. 
Eryngium yuccaefolium Michx. (EK. aquatica L. Button 
Snakeroot. 
Dry upland old fields, pastures and open woods. Oxford; 
Tay.or; Jackson. July-August. 
Eryngium cynchaetum (Gray), Coult. & Rose. (E. yuccaefol- 
ium synchaetum Gray) Narrow-Leaf Button Snakeroot. 
Low damp pine barrens. Landon; Gulfport; Ocean 
Springs; Biloxi (Tracy); Bay St. Louis (Allison). June. 
Geol. Sur. Herb. Allison Herb. 
Eryngium Virginianum Lam. Virgina Snakeroot. 
Swamps and margins of ponds. Joncs Co. 
Allison Herb 
Eryngium integrifolium Walt. (E. Virgatum Lam). Blue- 
Flowered Eryngo. 
Common in damp pine barrens. Rankin Co. (Hilg. Ms.) ; 
