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? Rajinesque!” 
Herb. Geol. Surv. Herb. Mohr. 
Roripa walteri (Ell.) Mobr, Bull. Torr. Club, 24: 23. 1897. WALTER’S CRESS. 
Sisymbrium walteri Ell, Sk. 2: 146. 1824. 
Nasturtium tanacetifolium Hook. & Arn. Hook, Journ, Bot. 1: 190. 
Sisymbrium tanacetifolium Walt. Fl. Car, 174. 1788. Not L. 
Ell. Sk.l.c. Chap. Fl. 24. Coulter, Contr, Nat. Herb, 2: 17. Gray, Syn. F1N. 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. 1755. 
About 50 species, cooler and warmer zones of Northern Hemisphere. Few in South 
America. Europe. 
Cardamine pennsylvanica Muhl.; Willd. Sp. P1.3:486, 1800. 
SMALL BIrTER CRESS. 
Cardamine hirsuta auct. Am. Not L. 
EIL 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 §° Earle, 43). Tusealoosa County (L. 4. 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.; Muh). 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. FLN. 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 (Ff. .f. Smith). Flowers white; March, April. Not 
frequent, Perennial. 
Type locality (Muhl, Cat.): ** Pensylvania.” 
Herb. Geol. Surv. Herb. Mohr. 
DENTARIA L. Sp. Pl. 2:658, 1758. 
Fifteen species, temperate region Northern Hemisphere, Europe, Asia. North 
L Pp eb} s ’ , 
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. I'l. 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. 
