CKUCIFER.-E. 38 



Gr. jco-g^ta, the heart, 2a,ft,a.iu, to strengthen ; from its supposed stomach- 

 ic qualities. Calyx leaves spreading but little. Stigma entire. A single 

 gland between each of the shorter stamens and the calyx. Margins ot the 

 bilique truncate. 



1. C. IHRSU'TA. L. C. Pennsylvanica. Mil. 



Smooth, branching ; haves pinnate, often sublyrate; leaflets roundish-oblong, 

 obtuse, angular-toothed ; silujurs erect. In wet places, often submerged 

 except its upper leaves and flowers. Stem 8 — 12 inches high. Leaves alter- 

 nate, large, sniooth, delicate, of about? leaflets. Leaflets rounded at the end, 

 with, a few obtuse teeth or entire, the terminal one much the longest. Branch- 

 es axillary. Flowers white, small. Pods very slender. May — July. Per. 



2. C. VlRGI'NICA. 



Smooth, erect; /caj-es pinnate, leaflets lanceolate, subaurlculate; slUqiie 

 long, straight, erect. A small species in wet places, 5 — 8 inches high. Leaves 

 with a single tooth on one or both sides of the leaflets. Flowers small, white. 

 May. Per. Virginian Waier-Crcss. 



3. C. TERES. 



Small, erect, ramose; ^raBey all sub-lyrate-pinnatifid ; siJique short, terete, 

 acuminate. Wet places. Stem 6 inches hin-h,roughish. Cauline leaves with 

 3 or 4 pairs of lobes, of which the terminal one is3-cleft. Flowers white, mi- 

 nute, in long racemes. June. Per. Slender Water Cress. 



4. C. BELLIDIFO'LIUM. L. C. rotu.ndifolia. B. 



Leaves suborbicular, nearly entire, smooth, petiolate ; stem simple, weak, 

 procumbent. A very small plant on the sunnnits of the White Mts. The 

 specimen before me was found in flower in the month of July. The stem is 

 an inch and a half high. Leaves mostly radical, broadly oval and ovate, a 

 fourth of an inch in length, on petioles as long as the stems. Fascicles of 3 

 or 4 white flowers. Petals oval, obtuse, nearly as long again as the calyx. 



3. DRABA. 



Silicic entire, oval-oblon,^, llie valves flat or convex; cells 

 2, many-seeded ; seeds not margined ; filaments without teeth. 



Gr. ^ga^firi, acrid, biting; from the taste of the plant. Flowers white or 

 yellow. 



1. D. VERNA. 



Scape naked ; lenres oblong, acute, subserrate, hairy ; petnls bifid ; stigma 

 sessile. A little carl3'-flo\vering plant in fields, &c. Leaves all radical, with 

 a few teeth towards the end. Scape a few inches in hight, with a raceme of 

 small white flowers. Calyx spreading. Petals cleft half down. Apr. May. 



Whitlow grass. 



2. D. ARA'bISANS. Mx. Arabis. P. 



57c??i leafy, somewhat branched and pubescent; leaves lanceolate, acutely 

 dentate ; silicle linear, smootli, longer than tlie pedicel. Among rocks, &c. 

 The silicle is elongated, acuminate, contorted. It may be justly called a sili- 

 que, and hence Pursh considered this plant an Arabis. May. Bien. 



