Denlarla. ' CKL'CIFKILE. 153 



iucluding a stout style a line or two iu length, 4-U-seeiled. — L. aurea, Hook. f. Bot. Mag. 

 t. 5730. — Barrens of Kentucky, 67ioW; near La Vergno and about N;i«liville, Tennesht-e, 



GuUiiir/er. 



42. DENTARIA, Tourn. Toothwout, Peiter-uoot. (Latin dens, a 

 tooth, from the tootlied rootstocks of some of the species.) — Nearly or quite 

 glabrous perennials, gro\vin<j in damp woods, and hlooming in early sj»ring, rarely 

 fruiting; flowers large. Distinguished from Cardumine (with whic:h it has heeu 

 united by R. Brown and Bentham «& Hooker) most obviously bv its habit. 

 Tlie foliage of many species is very variable. The stem is rarely branched, and 

 the styles are usually slender and elongated. The remaining spei-ies are con- 

 fined to temperate regions of Europe, with a single species in Kastern Asia ; none 

 are arctic or alpine. — Inst. 22.5, t. 110; L. Gen. no. 040; Gray, Gen. 111. i. 

 137, t. 56; Keichenb. Ic. Fl. Germ. ii. 30-32. [By 8. Watson.] 



* Kootstock elongated : leaves 3-foliolate: species of tlie Atlantic States and Mi!<.si.x«ij(pi 

 Valley. 



D. diph;^lla, Micnx. (Pepper-root.) Rootstock several inches in Icngtii, often hranched, 

 stiimgly toothed at the numerous nodes: cauline leaves two, apjiroximatc or opposite; tlie 

 leaflets very shortly petiolulate, ovate or oblong-ovate, sometimes ol)scurely lobe<i, coarsely 

 crenate, the teeth al)ruj)tly acute, glabrous or sparingly liispid on the veins beneatii, often 

 minutely scabrous on the margin, 1 to 4 inches long : peduncle glabrous: petals white or 

 pale purple: pods "au inch long, the style a third of the whole or more." — Fl. ii. 30; 

 Sims, Bot. Mag. t. 146.5; Torr. & Gray, Fl. i. 87. D. bifolia, Stokes, Bot. Mat. Med iii. 

 443. Curdamine diphylla, Wood, Bot. & Fl. 37. — Nova Scotia to South Carolina, and west- 

 ward to Minnesota and Kentucky. 



* * Kootstock tuberous, more or less moniliform. 



■i— Cauline leaves divided (rarely all entire iu A ddi/ornica). 



++ Eastern closely related species. 



D. laciniata, Miul. Tubers usually not jointed, nor prominently tuberdcd, becoming 

 longitudinally sulcate : peduncle often pubescent and margin of the leaves scabrous, as in 

 the following species: cauline leaves three or two, usually verticillate or apjiroximatc, 

 divided or parted into three segments ; the lateral segments often dee])ly 2-lobcd, all broadl v 

 oblong to linear, more or less laciniately toothed (very rarely entire), I to 4 inches long'; 

 basal leaves similar : petals pale rose-color to white ; pods an inch long or more, not includ- 

 ing the style (3 to 6 lines); seeds orbicular or oblong; cotyledons very unoqual, one verv 

 thick, the other very small, half the length of the acute radicle, which is cleft to the middle. 

 — Muhl. iu Willd. Spec. iii. 479; Barton, Fl. N. Am. iii. 4, t. 72; Torr. & Gray, 1. c. sfi, 

 excl. var. 5. I>. ronratenata, Michx. 1. c. Cardumine laciniata, Wood, 1. c. 38. --From 

 Quebec to Ontario and Minnesota, and southv/ard to Florida and Louisiana. 



Var. multifida, J. F. James. Tubers deej>seated and slems erect in fruit: a slondi r 

 form with the narrowly linear segments of the leaflets usually more or less divided into 

 linear lobes. — Bot. (iaz. xiii. 2.34. D. multijida, Muhl. Cat.fiO; Torr. & Grav, 1. c. 87. 

 D. dissecta, Leavenworth, Am. Jour. Sci. ser. 1, vii. 62. Cardumine multijida, Wood, 1. c. 

 not Pursh. — N. Carolina and Georgia to Tennessee and Alabama. 



D. heteroph;^lla, Nctt. Tubers jointeil, narrowly oblong, or lhick-<lavate, with scattered 

 prominent " eyes " or tubercles : le;vvcs two (rarely three), opposite or alfiTn:ite, 3-folioIate ; 

 leaflets distinctly petiolulate, oblong-lanceolate to linear, entire or rather deeply cnnatc, 

 rarely laciniate or lobed, 1 to 3 inches long; b.wal leaves with ovate or sometimes lanceo- 

 late leaflets, usually lobed or crenate: i)ods nearly as in the liist; seeds orbicular ; cotyle- 

 dons equal in length, one narrower by the tbiikiiess of the acute ra<Iicle. which is cleft to 

 above the middle.— Gen. ii. 66; Torr. & (iray. Fl. i. 87. Cardamine /irteropfii/lla, Wo<k1, 

 1- c. — Pennsylvania to Georgia and west to Kentucky and Teuuessee ; said to bloom a week 

 later than the jjreceding sj)ecies. 



