182 Cruciferaceae 
L. Basal leaves pinnately parted, pubescent. .W. (L. occidentale.) 
L. menziesii DC. 
LL. Basal leaves dentate, glabrous. W. E. 
L. medium Gr. (Tall Pepper-grass) 
CORONOPUS WART-CRESS 
Annual or biennial, diffuse. Leaves mostly pinnatifid. Flowers small, whitish. 
Stamens 2—6, free. Stigma sessile. Pod small, flattened at right angles to the parti- 
tion, sessile; valves oblong or subglobose, obtuse at each end, indehiscent but falling 
away from the partition at maturity, wrinkled or tubercled. Seed | in each cell. (Gk. 
korone—crow, pous=foot; referring to the deeply cleft leaves.) 
A. Pod notched at apex, rough-wrinkled. W. 
C. didymus Sm. 
AA. Pod not notched at apex, tubercled. W. (C. ruellii.) 
C. procumbens Gili. 
THLASPI , PENNY-CRESS | 
Annual or perennial, glabrous, low, erect. Leaves entire or dentate; at least the 
upper stem-leaves auriculate and clasping. Flowers white or purplish. Sepals obtuse. 
Petals obovate or oblanceolate, entire. Stamens free, unappendaged. Style O—1; 
stigma small, entire or) slightly emarginate. Pod cuneate or obcordate or oblong-orbic- 
ular, mostly emarginate, flattened at right angles to the partition, crested or winged, de- 
hiscent. Seeds 2—-several in each cell, wingless. (Gk. thlaein—to crush; on account of 
the flat pod.) 
A. Pod 8—12 mm. wide, broadly wing-margined, notched V4—2/5 its length; 
annual. W. E. T. arvense L. (Field Penny-cress) 
AA. Pod 2—5 mm. wide, hardly wing-margined or notched; perennial. 
B. Leaves green, not glaucous. C. E. : 
T. alpestre L. (Perennial Penny-cress) 
BB. Leaves glaucous. E. (7. glaucum.) 
T. alpestre glaucum Nels. 
COCHLEARIA SPOON-CRESS 
Glabrous, low, somewhat succulent. Leaves mostly entire. Flowers small, white. 
Sepals rounded at apex. Petals obovate or cuneate. Stamens free. Stigma ‘simple or 
nearly so; style | to almost none. Pod subglobose to short-oblong, often somewhat flat 
at right angles to the partition, very turgid; valves |-veined. Seeds 2—-several, in 2 
rows in each cell. (L. cochlear—a spoon; the leaves are somewhat spoon-shaped.) W. 
C. anglica L. 
STENOPHRAGMA 
Annual (ours) or perennial, low, erect, pubescent with forked hairs. .Leaves 
chiefly basal, entire or serrate; stem-leaves few or reduced, sessile by a narrow base. 
Flowers small, white, in racemes. Style short; stigma 2-lobed. Pod slender, 4-angled 
or cylindric; pedicel slender; partition with very wide and obscure mid-vein. Seeds jn | 
(ours) or 2 rows in each cell. (Gk. stenos==narrow, phragma—a partition: referring 
to the partition in the pod.) W. (Sisymbrium thalianum.) 
S. thaliana Celak. (Mouse-ear Cress) 


