562 BRASSICACEAE 
S.)—Roadsides and in waste-places, various provinces, Fla. 
A ‘Calif, C nn aa Mass. Nat. of Eu., and cult.—Spr. 
CHEIRINIA Link. Annual or biennial herbs. Leaf-blades entice. 
ms or lobed. Sepals 4, nearly equal. Petals 4, yellow, with broad blades. 
Stamens 6: anthers elliptie to sagittate. Style very short: stigma depressed. 
Pod elongate.—About 90 species, natives of the north temperate zone.— 
REACLE-MUSTARDS. JBLISTER-CRESSES. 
Petals less than 5 mm. long: anthers over 2 mm. long: pod di than 15 times as 
long as wide: seed about 1 mm. lon . C. cheiranthoides. 
Petals over 15 mm. long : anthers Abou 1 mm. long: pod over 
30 times as long as wide: seed about 2 mm. long. 2. C. aspera. 
C. cheiranthoides (L.) Link. as 1-7 dm. tall strigillose: leaf-blades 
elliptic to i ate or linear, 2—10 c long, entire, or obscurely toothed: 
sepals 2-2.5 mm. long: petals "with hore 
blades about, as viene as the claws: filam Bib 
3—4 mm. long: pod ascending, 1.5-2 em. edd 
the oe -beak about 1 mm. long. [Erysimum 
cheiranthoides zb —( WORMSEE ED-MUSTARD 
WILD- — Sandy soil, especially l 
oe streams, various provinces N of Coastal 
Plain, N. C. to Ten nn., Wash., Alas., and 
Newf. —Sum. 
2. C. aspera (Nutt.) Rydb. Stem 6-10 dm. 
- l 
elliptie, 3—15 em. long, entire or repand, or 
n x wer ones sometimes pinnatifid: sepals ; 
ng: petals with cuneate-obovate © 
m. lon 
i blades such shorter than the claws: longer filaments 12-14 mm. long: pod stout, 
spreading, 8-11 cm. long, the style- Du on 4 mm. long.—Dry soil, various 
provinces, Tenn. to N. M. and S. Can 
_ 17. BRASSICA [Tourn.] L. Annual, biennial, or perennial herbs. Leaf- 
blades lobed or pinnatifid, or those of the upper leaves entire. Sepals 4, rather 
narrow. Petals 4, yellow, cream-colored, or white, the blades broad. Stamens 6: 
anthers sagittate. Style columnar: stigma depressed or 2-lobed. Pod sine 
sometimes angled, the beak conic.—About 80 species, Eurasian and African— 
MUSTARDS.—Many of the species are important food plants. Here belongs 
cabbage in its many varieties, mustards, turnips, and charlocks. 
Blades of the upper leaves merely sessile: petal-blades abruptly narrowed into slender 
claws, yellow 
Pod erect or appressed, short-beaked, less than 2 cm. long: 
pedicel appressed. 1. B. nigra. 
Pod spr eading, long-beaked, over 2 cm. long: pedicel spread- 
Leaf. blades lyrate: pod stout, mostly over 3 mm. wide. 2. B. juncea. 
Leaf- M. mu a re and crisped : pod slender, mostly 
Jess than 3 m 3. B. japonica. 
p of the upper Teas. claspings petal-blades gradually nar- 
owed into broad claws, cream-colored. 4. B. campestris. 
1. B. nigra (L.) Koch. Stem 1-2 m. tall, sometimes sparingly pubescent, 
widely branched: leaves 5-20 cm. long; blades of the lower ones lyrate- 
