Order 13.— CRUCIFERjE, 235 



2 S. arvensis L. Field Mustard. Si. and leaves hairy; siliquc smooth, many- 

 angled, iorulous, spreading, about 3 limes linger than the ilmder, ancipital style. — Qj) 

 Naturalized in N. Y. (T. and G.) and in Vt. (Robbins). Lower lvs. large, subly- 

 rate-pinnatifid, upper ones oblong-ovate, all repand-toothed. Silique somewhat 

 spreading, 1^' long. Sds. large and black. Jn.. Aug., § Eur. 



3 S alba L. White Mustard. Lvs. smoothish; siliques hispid, torose, 

 shorter rkan the ensiform beak sds. large, pale yellow. — (J) Native of Europe. St. 

 2 — 5f high, thinly hirsute. Lvs. all lyrately pinnate, dentate, petiolate. Siliques 

 spreading, about 4-seeded. The seeds are used for about the same purposes as 

 those of S. nigra, esteemed in medicine. Jn., Jl. %. 



16. BRASSICA, L. Cabbage, etc. (Celtic bresic, the cabbage.) 

 Sepals equal at base, (mostly) erect ; petals obovate ; filaments without 

 teeth; silique sub-compressed, valves concave, with a central vein; 

 style short, subterete, obtuse ; seeds globous, in a single (often double) 

 row (0»). — Fls. yellow. 



1 B. campestris L. Cale. Lvs. somewhat fleshy and glaucous, the lower lyrate- 

 dentate. subciliate, upper ones cordate-amplexicaul, acuminate. — (J) Cultivated 

 fields and waste places. St. \\ — 3 f high, with a few, scattered, reversed hairs 

 below. Lower lvs. 3 — 7' long, ^ as wide, upper smaller, entire, with rounded 

 clasping lobes at base, tapering to an obtuse point. Rac. 1 — 2f long. Sep. 

 erect, spreading. Cor. yellow, 4 — 5" diam. Siliques \\' long, with the style £'. 

 Sds. small, dark brown. Jn., Jl. § Sweden. 



ft Rutabaga. Swedish Turnip. Rt. tumid, napiform, subglobous, yellowish, 

 — Cultivated like the common turnip : but after a thorough experiment, it is 

 conceded oy farmers to be inferior in value to that root, although it grows to 

 an enormous size. J. 



2 B. rapa L. Radical lvs. lyrate, rough, not glaucous, caulino ones incised, 

 apper entire, smooth. \. 



ji depressa. Common Turnip. Rt. depressed, globous or napiform, contracted 

 below into a slender radicle. — © Long cultivated for the table, etc., in gar- 

 dens and fields. St. 2 — 4f high, and with the leaves deep green. Upper 

 lvs. amplexicaul. Pods 1' long. Sds. small, reddish-brown. Jd. \ 



3 B. oleracea L. Cabbage. Lvs. very smooth and glaucous, fleshy, repand- 

 toothed or lobed. — (gy Native of Europe, where it grows on rocky shores and 

 cliffs, with no appearance of a head, forming a surprising contrast with the cul- 

 tivated varieties. The excellence of the cabbage as a pot-herb needs no en- 

 comium. \ 



P bullata. Savoy Cabbage. Lvs. curled, subcapitate when young, finally 

 expanding. 



y Botrytis-cauliflora. Cauliflower. St. low; hda thick, compact, termi- 

 nal ; fls. abortive, on short, fleshy peduncles. \. 



d botrytis asparagoides. Broccoli. St. taller ; hds. subramous; branches 

 fleshy at the summit, consisting of clusters of abortive flower-buds. \. 



e capitata. Head Cabbage. St. short ; lvs. concave, packed in a dense 

 head before flowering ; rac. paniculate. \. 



17. ALYSSUM, L. Madwort. (Gr. a, privative, Xvaaa, rage ; sup- 

 posed by the ancients to allay anger.) Calyx equal at base; petals 

 entire; some of the stamens with teeth ; silicle orbicular or oval, with 

 valves flat or convex in the centre; seeds 1 — 4 in each cell (0=). — 

 Showy European herbs. 



1 A. saxatile L. Rock Alyssum. Madwort. St. suffruticous at base, sub- 

 eorymbous; lvs. lanceolate, entire, downy; silicle obovate-orbicular, 1-seeded; sds. 

 margined. — An early-flowering garden perennial, native of Candia. St. If 

 high, with numerous yellow flowers in close corymbous bunches. Apr., 

 May. f. 



