TETRADYNAMIA SILIQUOSA. 
145 
SISYMBRIUM. Gen. Pi.. 1089. 
Siliqua rostro bre- 
vi, tereti, deliiscens, 
valvulis rectiusculis. 
Calyx, Corollaque 
patentes. 
1. Nasturtium, 
S. siliquis declina- 
tis brevibus; foliis pin- 
natis, foliolis subro- 
tundis, repando-den- 
tatis. 
Pod with the beak 
short, terete, opening, 
and the valves 
straight. Calyx and 
Corolla expanding. 
Pods declining, 
short ; leaves pinnate, 
leaflets nearly round, 
repand, sparingly 
toothed. 
Sp. pi. 3. p. 489. Pursh 2. p. 440. Nutt. 2. p. 67. 
Root perennial. Stem 12 — 18 inches high, branching. Root Leaves 
2 — 5 inches long, pinnatifid, with the upper segments much dilated, very 
glabrous. Flowers in terminal racemes. Leaves of the calyx ovate. 
Petals twice as long as the calyx, obovate, bright yellow. Stamens short- 
er than the corolla. Pods about an inch long, many seeded, slightly in- 
curved. 
This plant, the common cress of our gardens, is becoming naturalized 
in our country, but in the low country of South-Carolina, it certainly is 
not indigenous. 
Grows in close and damp soils. 
Flowers February — May. 
2. Palustre. 
S. siliquis declina- 
tis oblongo-ovatis; fo- 
liis pinnatifidis serra- 
tis ; petalis calyce bre- 
vioribus. 
Pods declining, ob- 
long, ovate ; leaves 
pinnatifid, serrate; pe- 
tals shorter than the 
calyx. 
Sp. pi. 3. p. 490. Pursh 2. p. 440. Nutt. 2. p. 67* 
With this species I am unacquainted. (Root annual. Flowers yellow. 
Pursh.) 
Grows in inundated and low ground, from Canada to Carolina. Pursh. 
Flowers July — August. 
VOL. II. 
T 
