MUSTARD FAMILY. tjt> 



£. Perofskianum, Flsch. & Mey. Stem simple ; leaves lance-spatulate, 



remotely toothed ; flowers showy ; pods about 1' long, obtusely 4-angled. 



Cult, from Caucasus. e-; u 



* * Floicers yellow. 



E. cheiranthoides, Linn. Treacle Mustard or Wormseed Mustard. 

 Annual ; branches slender ; leaves lanceolate, almost entire ; flowers 

 small, yellow ; stigma small. Along streams, N. 



E. pulchellum, Boiss. (or Cheiranthus pulchellus). % Compact 

 growing, nmch branched at base ; lower leaves oblong-spatulate, dentate, 

 or lyrate, upper oblong or lanceolate, sharply pectinate-dentate ; stigma 

 broad as the pod ; flowers showy, sulphur-yellow in spring. Cult, from 

 Caucasus. 



19. SISYMBRIUM, HEDGE MUSTARD. (An ancient Greek 

 name.) Pod either flattened or 4-sided, or the cross-section nearly 

 circular ; in the common species shortish, lance-awl-shaped, close- 

 pressed to the stem ; seeds oval, marginless. Flowers small. (Les- 

 sons, Figs. 427, 428.) 



S. can^scens, Nutt. Hoary H. or Tansy Mustard. ® Hoary; leaves 

 finely cut, twice-pinnatifid ; flowers minute yellowish ; pods oblong-club- 

 shaped, 4-sided on slender horizontal pedicels. Fa. and N. Y. to 111. and 

 S. W. Common W. 



S. officinale. Scop. Common H. ® Stems branching ; leaves run- 

 cinate ; flowers very small, pale yellow, followed by awl-.shaped, obscurely 

 6-sided pods close-pressed to the axis of the narrow .spike. Coarse weed 

 in waste places. Eu. 



S. Thaliana, Gaud. Moi.se-ear Cress. (2) Leaves obovate or oblong, 

 entirely or barely toothed ; flowers white ; pods linear on spreading 

 pedicels. Mass. to Kans. Eu. 



20. BRASSICA, CABBAGE, MUSTARD, &c. (Ancient Latin name 

 of Cabbage.) ® (g) Pod oblong or linear, beaked or pointed beyond 

 the summit of the valves, by the enlarged and persistent style base ; 

 seeds spherical. Cult, from Eu., or run wild as weeds. (Lcssoiis. 

 Fig. 235.) 



* Whole plant glaucous-blue when in flower ; leaves of the flower-stems 



clasping ; flowers various. 



■*- Leaves from the first more or less fleshy throughout, and glaucous-blue 

 even when young ; flowers creamy yellow. 



B. oleracea, Linn. Cabbage Tribe. The original is a seacoast plant 

 of Europe, with thick and hard stem, and pretty, large, pale yellow flowers ; 

 upper ones entire, clasping the stem, not auricled at the base ; cult, as a 

 biennial — the rounded, thick, and fleshy, strongly veined leaves collected 

 into a head the first year upon the summit of a short and stout stem. Cau- 

 liflower and Broccoli have the nourishing matter mainly concentrated 

 in short, imperfect, flower-branches collected into a flat head. Kohl-rabi 

 has the nourishing matter accumulated in the stem, which forms a turnip- 

 iike enlargement' above ground, at the origin of leaves. Kale is more 

 nearly the natural state of the species, the fleshy leaves not forming a 

 head. Brussels Sprouts has numerous small heads along the stem 

 below the top leaves. 



B. Napus, Linn. Rape. Leaves smooth from the first, more deeply 

 scalloped than in the last, not forming thickened parts above ground. 



B. campestris, Linn. Ruta-baga or Swedish Turnip. First leaves 

 hairy ; the root usually tuberous. 



QRAV'S F. F. & G. BOT. 6 



