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? Rafinesque!” 
Herb. Geol. Surv. Herb. Mohr. 
Roripa walteri (E1l.) Mohr, Bull. Torr. Club, 24: 23. 1897. WALTER’S CRESS. 
Sisymbrium waltert Ell, Sk. 2:146. 1824. 
Nasturtium tanacetifolium Hook. & Arn. Hook. Journ. Bot. 1: 190. 
Sisymbrium tanacetifolium Walt. Fl. Car. 174. 1788. Not L. 
oe. lu. 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 
noe 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 zones 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. - 
El. Sk. 2:144. Gray, Man. ed. 6, 65,as to the type. Chap. F1.26. 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 Pacitic; 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 s Earle, 43). Tuscaloosa County (EZ. 4. Smith). Mobile 
County. Most frequent in the Coast plain. Flowers white, February, March; fruit 
ripein 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. F1.25. Gray, Syn. FL.N. A.1, pt. 1: 156. 
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 (EZ. A. Smith). Flowers white; March, April. Not 
frequent. Perennial. i 
Type locality (Muhl. Cat.): ‘ Pensylvania.” 
Herb. Geol. Surv. Herb. Mohr. 
DENTARIA L. Sp. Pl. 2:653. 1753. 
Fifteen species, temperate region Northern Hewisphere, 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. ‘ . 
Alleghevian 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. 
