224: OKDER XUI. CKUCIFEKJS. 



email; petals linear. Stigmas nearly sessile. Siliques erect or curved. 

 Seeds numerous. — Yellow. $. South Carolina. 5 — 12 inches. 



3. N. palus'trjb, (D. C.) Leaves pinnatifid, 2 — 3 inches long, clasping 

 an 1 ciliate at the base, lobes confluent, toothed, glabrous, oblong-lance- 

 olate. Flowers very small ; petals equal the sepals. Silique declined, 

 ovate-oblong, a little curved. — Yellow. 21. June to August. Wet 

 places. 1 — 2 feet. 



Genus II.— AR'ABIS. L. 14—2. [Hock Cress.) 

 (Named from the country, Arabia.) 



Silique linear, generally compressed, terminated by the ses- 

 sile stigma, valves 1 -nerved. Seeds in one series, orbicular, 

 compressed. Calyx erect. 



1. A. Canadensis, (L.) Stern simple, glabrous toward the summits> 

 pubescent below. Leaves alternate, sessile, pubescent, oblong-lanceo- 

 late, remotely toothed, the lower ones petiolate and occasionally lyrate. 

 Flowers in long terminal racemes. Sepals hispid, colored. Petals ob- 

 long-linear, much longer than the sepals. Silique long, 2 — 3 inches, 

 linear, curved. — White. It. June. Middle Georgia, Sickle-pod. 



Genus HI— CARDAM'INE. L. 14—2. 

 (From the Greek kardia, a heart.) 



Silique linear, usually dehiscing elastically, with revolute 

 valves ; valves nerveless. Sepals expanding at the summit. 

 Seeds ovate. 



1. C. spathula'ta, (Mich.) Stein decumbent, slender, glabrous. Rad- 

 ical leaves spatulate, pubescent, about an inch in length, entire ; cauline 

 ones narrow and somewhat toothed. Flowers in terminal and axillary 

 racemes. Sepals hairy, oval. Petals oblong and obovate. Silique 

 about an inch long. — White. 0. April. Mountains and Mid. Dist. of 

 Geo. and Car. 4 — 6 inches. 



2. C. Virgin'ica, (L.) Stem erect, glabrous. Leaves alternate, pin- 

 nate, leaflets lanceolate, with a single tooth on one or both sides. Flow- 

 era in terminal racemes, erect. Petals a little longer than the sepals ; 

 Btigma Bessile. Varies much during the summer, and in different Loca- 

 tions, so that any description may be inapplicable under different cir- 

 cumstances. — White. 2f. April to June. Upper districts of Geo. and 

 Car. 4 — 12 inch«& 



Th" Pennsylvanica of Elliott, and Yirginica, are supposed to be a 

 variety of the Hirsuta of I/nna-us. 



<;:m.- IV.— DKNTA'IilA. L. 14—2. (Tooth-vurt. Pepper-root.) 

 (From the Latin </<»*, a tooth.) 



Silique lanceolate, dehiscing elastically. Valves nerveless, 

 plane; dissepiment somewhat fungous. Stigma emargmate. 

 lihizoma fleshy, often dentate. Perennial, herbaceous plants, 

 with variously divided have-. 



1. D. i.ahma r.\, (Mnhl.) Rhizoma moniliform, tubers Blightly con- 

 nected. Leaves usually 8, ternate, leaflets incised or irregularly notch 



