Dentaria. CRUCIFERiE. 87 



sepals, pale purple, or nearly white, obovate-oblon<T. Style when younj^ not 

 longer tlian the stamens. Silique somewhat torulose, with a long tapering 

 point. — We have not seen tlie var. <!. in fruit. It is so remarkable in the furiix 

 of its leaves that it may prove to be a new species. It is perhaps the 1). 

 maxima of Nuttall, although it by no means agrees with the detailed descrip- 

 tion of that botanist. 



2. D. maxima (Nutt.): stem tall; leaves (5-7) alternate, remote, the 

 margin a little roughened; leaflets somewhat oval, incisely andacutely tooth- 

 ed, lateral ones lobed (flowers pale purple). Nutt. gen. 2. p. 6G ; J)('. 

 jn-o(lr. 1. p. 155. 



Western part of the State of New-York, and Pennsylvania. Nuttall. — 

 Stem often nearly 2 feet high. Tubers concatenate. Nutt. 



3. J). muUifida (Muhl): stem 2-3-leaved ; leaves mostly verticillate, 2-3- 

 ternately divided; segments and lobes all Unear and very narrow; siliques 

 narrow.— Muhl. ! cat. p. 63 ; Ell. sk. 2. p. 143. D. dissecta, Leaven- 

 wurtli, in Sill. jour. 7, p. 62. 



Shady woods, near Salem, N. Carolina, Schweinitz I Cherokee country, 

 Dr. Learenworthj near Tuscaloosa, Alabama, Nuttall. — A span high. 

 llhizoma tuberous. (Nutt.) Leaves with remarkably narrow divisions, 

 almost as fine as those of the Carrot. Flowers white (Nutt.), smaller than 

 in D. laciniata. 



4. D. heternphylla (Nutt.) : rhizoma moniliform, the tubers oblong; cau- 

 line leaves 2 (rarely 3), petioled, alternate, ternately divided; leaflets linear- 

 lanceolate, entire or toothed ; margin minutely and ciliately roughened ; ra- 

 dical leaves rather obtusely lobed. — Nutt.! gen. 2. p. 66; DC. prodr. 1. p. 

 155. 



Shady woods, near banks of rivers, Pennsylvania ! to Kentucky ! April- 

 May. — A foot high. Leaflets of the radical leaves incisely lobed and 

 crenately toothed, the teeth minutely mucronate. Pedicels about as long 

 as the purplish flowers. Siliques with a long tapering point. Stigma capi- 

 tate or obscurely 2-lobed. 



5. D. cliphylla (Michx.) : rhizoma elongated, toothed ; cauline leaves 2, 

 ternately divided ; segments ovate or oblong, unequaQy and incisely toothed. 

 —Michx.! Ji. 2. p. 30; Hot. mag. t. 1465; DC. prodr. 1. p. 169; Hook, 

 ft. Bor.-Am. 1. p. i6. 



Shady Avoods, in rich soil, Canada ! to S. Carolina, west to the Mississippi ! 

 April-May. — Rhizoma extensively creeping, often branched, marked with 

 projecting teeth, very pungent to the taste (hence the vulgar name, Pepper- 

 root). Leaves closely approximated above the middle of the stem : petiole 

 about an inch long. Flowers white or very pale purple : pedicels rather 

 thick, longer than the flower, spreading. 



6. D. tenella (Pursh) : root fibrous, bearing roundish tubers (Hook.); 

 radical leaves simple, roundish, about 5-lobed ; cauline leaves 1-4, alternate, 

 ternately or pinnately divided ; segments linear, acute, entire or sparingly 

 toothed. — Pursh! ft. 2. p. 439; DC. prodr. 1. p. 155. D. tenuifolia, Ledeft. 

 in mem. acad. St.'Petersb. (1815) p. 547 ?; Hook. jl. Bor.-Am.. 1. p. 46. 



Oregon, Menzics, Nuttall! — Plant 3-10 inches high. Radical leaves 

 scarcely an inch long, crenately lobed. Stem often bearing but a single 

 nearly sessile leaf. Flowers rather smaller than in Cardamine pratensis, 

 pale purple. — Mr. Nuttall thinks this plant to be distinct from D. tenuifolia 

 of Ledebour ; while Sir W. J. Hooker states that he could find no difference 

 between them. In oiu: Siberian specimens of the latter, the cauline leaves 

 are distinctly petioled, with tootlied divisions, and the flowers are considera- 

 bly larger than in the Oregon plant. They have, however, at least in one of 

 our specimens, a simple lobed radical leaf. 



