180 Cruciferaceae 
FF. Biennial; racemes dense; pods spreading. 
G. — Leaf-margin entire or wavy; pods about 2.5 cm. long. E. 
T. integrifolia Endl. 
GG. At least some of the leaves with margin serrate or more deeply lobed. 
H. Leaves coarsely dentate to entire; pods mostly erect or ascending, 6—10 
cm. long; pedicels and rachis milky-white. E. 
T. milleflorum Nels. 
HH. Leaves laciniate to dentate; pods spreading, 3.7—7.5 cm. long; ped- 
icels and rachis green. C.E. (7. leptosepalum. ) 
T. laciniatum Endl. . 
CAULANTHUS WILD CABBAGH 
Biennial or perennial, stout. Leaves mostly pinnatifid. Flowers dull-colored, in 
long loose racemes. Sepals large, nearly equally saccate at base. Petals but little longer 
than the sepals, undulate-crisped; claw long; blade small. Stigma emarginate to 2-lobed. 
Pod sessile, with short thick stipe, terete, elongated; valves |-veined. Seeds in 1 row 
in each cell, oblong, flat, emarginate or scarcely margined. (Gk. kaulos—stem, anthos— 
flower; referring to the long claws of the petals. ) 
A. Stem somewhat hairy; flowers ascending. E., 
C. pilosus Wats. 
AA. Stem glabrous. 
B. Flowers erect or ascending. Sepals 10—12 mm. long. E. 
C. crassicaulis Wats. 
BB. Flowers horizontal or reflexed; sepals less than 10 mm. long. E. 
C. hastatus Wats. 
STREPTANTHUS : TWIST-FLOWER 
Branching. Leaves entire to pinnatifid. Flowers white or purple or yellowish (not 
ours). Sepals usually colored, equal at base or rarely | or more of them saccate. Petals 
more or less twisted or undulate, channeled. Longest pair of stamens often united below. 
Stigma entire. Pod sessile, oblong to narrowly linear, compressed or subterete: valves 
I-veined. Seed flat, margined or winged. (Gk. streptos—twisted, anthos—flower; re- 
ferring to the twisted petals. ) 
A.  Stem-leaves clasping, auriculate or sagittale or cordate. 
B. Stem simple; pods 5—10 cm. long, spreading. FE. 
S. cordatus Nutt. 
BB. Stem branched; pods 2.56.8 cm. long, erect or ascending or arcuate. 
C. Plant somewhat hairy below, not glaucous: stem-leaves ovate to lanceolate, the 
upper acuminate; sepals acuminate. U. 
S. glandulosus Hook. 
CC. Plant glabrous and glaucous; stem-leaves obovate-spatulate to orbicular, the 
upper obtuse; sepals acute. U., 
S. orbiculatus Gr. 
AA.  Stem-leaves not clasping nor auriculate nor cordate. 
D. Annual; stem branching from the base; sepals 4 mm. or less long; pod 2.5—5 
cm. long, 2 mm. wide, pendulous. E. 
S. longirostris Wats. 
DD. Perennial; stem simple; sepals 6 mm. or more long; pod 5—7.5 cm. long, 
3—4 mm. wide, erect or spreading. U. 
S. howellii Wats. 


