54 
TETRADYNAMIA, SILIQUOSA. 
heterophylla. 2, 1). stem 2-leaved, leaves ternate, petiolate, 
vulgaris. 
leaflets linear, sublanceolate, acute, entire, mar- 
gin asperate, ciliate; radical leaflets ovate-ob- 
long, incisely and grossly tocthed. Oxzs. The 
smallest species with which I am acquainted. 
Root concatenately and also simply tuberous, 
tubers oblong, dentoid. One radical leaf always 
present upon a long petiole arising fromthebase ~~ 
of the scape, deeply toothed, dentures obtuse, 
with a small abrupt point; cauline leaflets very 
rarely subserrate, generally entire, invariably 
ciliated, nearly linear, more than an inchlong, 
and only about 2 lines wide. Corymb small, 
about 9-flowered; flowers pale purple, nearly | 
the size of those of Cardamine praiensis, petals 
oblong, entire, longer than the stamina. Flow- 
ering in June. Figure Pluk. Amalth. t. 435. f. 
2.2 but in this figure the leaves are a little. 
toothed.——Wuit. 
D. heterophylia, Nutt. 
In the shady fir woods on the banks of the Wissahickon; 
Mr. Nuttall. Ihave not met with it. ° 
300. BARBAREA. R. Brown. ( Crucifere.) 
Stlique 4-sided-ancipital. Cotyledones ac- 
cumbent. Seeds in a single series. Calhx 
erect. Glands disposed at the internal base : 
of the shorter filaments.—R. Brown. ; 
Hort. Kew. 4. p. 109. ; 
1. B. leaves lyrately pinnatifid ; stem branched ; 
flowers yellow, terminally racemose.—Wuti. 
Barbarea vulgaris, R. Brown. 
Erysimum Barbarea, L. | 
_ Waiter Cress. 
From fifteen inches to two feet high, bearing a profusion of 
elegant flowers. The plant is eaten in its young state at our 
tables as a sallad, under the above English name. On the 

