MUSTARD FAMILY. 525 



ALABAMA: Coast plain. Damp open places, borders of ditches, low fields. Flow- 

 ers yellow. March ; frequent. Winter. Annual or biennial. 

 Type locality : " 'Banks of the Mississippi/ Nuttall: Kentucky? Rafinesquel" 

 Herb. Geol. Surv. Herb. Mohr. 



Roripa waiter! (Ell. ) Mohr, Bull. Torr. Club, 24 : 23. 1897. WALTER'S CRESS. 



Sisymbrium walteri Ell. Sk. 2 : 146. 1824. 



Nasturtium tanacetifolium Hook. & Am. Hook. Journ. Bot. 1 : 190. 



Sisymbrium tanacetifolium Walt. Fl. Car. 174. 1788. Not L. 



Ell. Sk. 1. c. Chap . Fl. 24. Coulter, Contr. Nat. Herb. 2 : 17. Gray, Syn. Fl. N. A. 1, 

 pt. 1 : 148. 



NORTHERN MEXICO. 



Louisianian area. South Carolina to Florida, west to Louisiana, Arkansas, and 

 western Texas. 



ALABAMA: Coast plain. Damp open ground border ditches, low fields. Mobile 

 County. Flowers pale yellow. February, March ; fruit. April; frequent. Winter 

 annual. 



Type locality : " Common around Charleston and Beaufort." 



Herb. Geol. Surv. Herb. Mohr. 



CARDAMINE L. Sp. PL 2 :654. 1753. 



About 50 species, cooler and warmer /ones of Northern Hemisphere. Few in South 

 America. Europe. 



Cardamine pennsylvanica Muhl. ; Willd. Sp. PL 3 : 486. 1800. 



SMALL BITTER CRESS. 



Cardamine hirsuta auct. Am. Not L. 



Ell. Sk. 2 : 144. Gray, Man. ed. 6, 65, as to the type. Chap. Fl. 26. Gray, Syn. Fl. 

 N. A. 1, pt. 1 : 158. 



JAMAICA. 



Boreal zone to Louisianian area. Nova Scotia to the Arctic Sea; Ontario (Macoun) 

 to the Pacific; California north to Alaska; New England west to Dakota and Mon- 

 tana, south to Florida, Louisiana, and Arkansas. 



ALABAMA: Central Pine belt to Coast plain. Wet places, ditches. Conecuh 

 County, Evergreen (Baker $ Earle,&3). Tuscaloosa County (E. A. Smith}. Mobile 

 County. Most frequent in the Coast plain. Flowers white, February, March; fruit 

 ripe in April. Annual. 



Type locality : " Hab. in Pennsylvania." 



Herb. Geol. Surv. Herb. Mohr. 



Cardamine bulbosa (Schreb.) B. S. P. Prel. Cat. N. Y. 4. 1888. 



BULBOUS-ROOTED BITTER CRESS. 



Arabis bulbosa Schreb. ; Muhl. Trans Am. Phil. Soc. 3 : 174. 1793. 



Thlaspi tuberosum Nutt. Gen. 2 : 65. 1818. 



Cardamine rhomboidea DC. Syst. 2 : 246. 1821. 



Gray, Man. ed. 6, 65. Chap. Fl. 25. Gray, Syn. FL N. A. 1, pt. 1 : J56. 



Canadian zone to Carolinian area. Nova Scotia, Ontario, and New England, west 

 to Dakota, south to the Ohio Valley, Missouri, Tennessee, North Carolina, and 

 Florida. 



ALABAMA: Central Pine belt. Wet springy places. Tuscaloosa County, Epes 

 Station. Hale County, Havana (E. A. Smith). Flowers white; March, April. Not 

 frequent. Perennial. 



Type locality (Muhl. Cat.) : " Pensylvania." 



Herb. Geol. Surv. Herb. Mohr. 



DENTARIA L. Sp. PL 2 : 653. 1753. 



Fifteen species, temperate region Northern Hemisphere, Europe, Asia. North 

 America 10. Perennial herbs, 



Dentaria diphylla Michx. Fl. Bor. Am. 2 : 30. 1803. PEPPER-ROOT. 



Ell. Sk. 2 : 142. Gray, Man. ed. 6, 64. Chap. FL 26. Gray, Syn. Fl. N. A. 1, pt. 

 1 : 153. 



A lleghenian and Carolinian areas. New Brunswick, Ontario, Quebec ; New Eng- 

 land west to Minnesota ; southern West Virginia to Ohio, and along the mountains 

 to South Carolina. 



