Now] FLOWERING PLANTS AND FERNS 15 
eS) 
BRASSICA L. Mustard. 
Brassica nigra (L.) Koch (Sinapis nigra L.). Black Mustard. 
Throughout the state. Not rare. Spring. 
Brassica alba L. White Mustard. 
Occasional throughout the state. Spring. 
RORIPA Seop. Cress. 
Roripa nasturtium L. Rusby (Nasturtium officinale R.Br.). 
Water Cress. 
Common throughout the state in cool springy places. 
Biloxi beach. April. 
Geol. Surv. Herb. 
Roripa sessiliflora (Nutt.) A. S. Hitchcock (Nasturtium sessi- 
liflora Nutt.). 
Along the coast (Tracy). March. 
CARDIMINE L. Bitter Cress. 
Cardamine Pennsylvanica Muhl. (C. hirsuta Gray). 
Found on dripping limestone ledges of the Tennessee Ri. r 
near Eastport. February-March. 
Geol. Surv. Herb. Allison Herb. 
Cardamine bulbosa (Schrieb.) B. S. P. (C. rhomboidea DC.). 
Boggy ground in the northern counties. Oxford; Taylor; 
Okolona; Potts Camp; Jackson. 
Geol. Surv. Herb. 
DENTARIA’ L. 
Dentaria diphylla Michx. Pepper Root. 
Rich shaded slopes. Eastport; Oxford. 
Geol. Surv. Herb. 
Dentaria laciniata Muhl. (D. coneatenata Michx.). 
Rich shaded shlopes. Oxford; New Albany. 
Geol. Surv. Herb. 
