158 CRUCIFER^. Cardamine. 



Var. OCCidentalis, Watson, n. var. A stout leafy form, with small flowers (2 Hues 

 ioug), fruitiug freely. — Sauries Island aud Oregon City, Oregou, Howell, Henderson. 

 ISpecinieus irum Eagle and Washoe Valleys, Nevada, Stretch, have blunt styleless pods 18 

 lines long, and are perhaps distinct. 

 C. Gambelii, Watson. Rather stout aud tall (2 or 3 feet high) but lax, decumbeut at base 

 and rooting at the lower joints, glabrous or sparingly soft-villous, branched : leaflets 4 to 6 

 pairs, ovate-oblong to linear, usually cuneate at base and acute, mostly few-toothed, ^ to 1 

 inch long : raceme nearly sessile, becoming elongated : flowers white, 3 or 4 lines long ; 

 pedicels slender, divaricate, equalling the narrow erect or ascending often curved pod (6 to 12 

 lines long) : style slender, a line long. — Proc. Am. Acad. xi. 147, & Bot. Calif, i. 30 (where 

 by error GamhelUi). C. Schaffneri, Hook, f in Hemsl. Diag. PI. Nov. i. 2, & Biol Cent.- 

 Am. Bot. i. 32. — S. California from San Bernardino to Santa Barbara, in swamps aud 

 ditches. (Mex.) 



■i— -f— Flowers smaller : petals a line or two in length. 

 •H- Capsule mostly 20-30-seeded. 

 C* hirsuta, L.i Low, 3 to 8 or 10 inches high ; root single, very slender and with or without 

 long filiform branches : leaves chiefly basal and persisting in a rosulate cluster : leaflets 

 roundish in outline, undulately few-lobed, appressed-hispidulous above ; those of the few 

 cauline leaves oblong : flowers small ; petals white, once and a half to twice the length of 

 the sepals : stamens 4 ; pods erect on nearly erect or even appressed pedicels. — Spec. ii. 

 655; DC. Syst. ii. 659; Reichenb. Ic. Fl. Germ. ii. t. 26; Britton, Buli.Torr. Club, xix. 

 219. — Woods, Middle Atlantic States from S. Pennsylvania, Small, to N. Carolina, T. J. 

 Browne. Abundant about Washington, D. C. ; perhaps introduced ; fl. April, May. 

 C* parviflora, L. Very slender, glabrous or sparingly pubescent upon the stem, subsimple, 

 erect or nearly so : root at first single, becoming a fascicle of delicate fibres : stem often 

 somewhat flexuous, 6 or 8 inches high, leafy : leaflets small ; those of tlie lower leaves oblong 

 (rarely suborbicular), of the upper linear, very narrow; flowers as iu the preceding, but 

 petals mostly narrower and relatively longer : stamens normally 6 : pods erect upon spread- 

 ing-ascending pedicels. — Syst. Nafc. ed. 10, 1131, & Spec. ed. 2, ii. 914; DC. 1. c. 261; 

 Reichenb. I.e.; Britton, 1. c. 220. C. Fir^/ji /co, Michx. Fl. ii. 29, not L. C. hirsuta, y sir. 

 si/lmtica, of Am. authors, not C. sylvatica, Link. C flexuosa, Britton, Trans. N. Y. Acad. 

 Sci. ix. 9. C. arenicola, Britton, Bull. Torr. Club, xix. 220. — Sandy and rocky soil, E. 

 New England to Georgia aud across the continent to Oregou. In moist situations becom- 

 ing stouter and perhaps passing to the usually well marked 

 C.* Pennsylvanica, Muhl. Larger, a foot or two in height, more leafy, branching and of 

 laxer growth, nearly or quite glabrous : roots a fascicle of numerous slender fibres : leaflets 

 of the lower leaves roundish or short-oblong ; of the upper oblong, with rounded apex and 

 narrowed base, commonly more or less decurrent upou the rhachis, usually half inch or 

 more in length and 1 to 3 lines iu breadth : flowers as in the last : stamens 6 ; pods suberect 

 upon ascending and more or less spreading pedicels. — Muhl. in Willd. Spec. iii. 486 ; DC. 

 1. c. 258 ; Ell. Sk. ii. 144 ; Britton, 1. c. 219. C. hirsuta, of authors, as to Am. pi. in great 

 part, not L. C. flexuosa, Britton, Mem. Torr. Club, iv. 103, if correctly shown by Mr. 

 Small's specimen from Mt. Rogers, Va., appears to be a form of the same species with some- 

 what more spreading pods. — Moist places, chiefly in shade, NewfouiuUand to Florida and 

 across the continent to Central California aud north to Alaska; common; fl. according to 

 locality from April to July. Var. Brittoniana, O. A. Farwell (Asa Gray Bull. no. 7, 46 ; the 

 measurements obviously incorrect), if of this species, must be an exceptional form, with 

 lateral leaflets few, reduced, or obsolete. — N. Michigan. 



++ ++ Capsule fewer (8-20 )-seeded: western species. 

 C. oligosperma, Nutt. Annual, rarely sending out roots at the lower joints, slender, 

 hirsute or nearly glabrous, a foot high or less : leaflets small, petiolulate, roundish, often 3-5- 

 lobed or -toothed, in the upper leaves sometimes narrower : raceme usually few-flowered and 

 shortly pedunculate- flowers small (1 line long), white : pods erect, 6 to 10 lines long, 8-20- 

 seeded ; style very short. — Nutt. in Torr. & Gray, Fl. i. 85 ; Brew. & Wats. Bot. Calif, i. 

 30, — From Central California to Vancouver Island, in low wet places. 



1 Dr. Watson's description of this species has been revised to exclude the two following, which, 

 although very nearly related, generally appear distinct, as recently pointed out by Dr. Britton. 



