Brassica Jun'Cea, Sarepta, Indian, Russian Mustard. S. Russia, Africa, India, from this latter country exported into Europe; seed closely resemble the official black mustard, and have the same constituents. B. arven'sis (Sinapis'trum), Charlock, Wild Mustard, Europe, United States; an annual, troublesome weed; seed smoothish, dark brown, smaller and less pungent than our official black mustard. B. olera'cea, Cabbage, Europe; leaves large, smooth, glaucous, very different from cultivated varieties. B. campes'tris; Europe, Russian Asia. Wild annual, .3-.6 M. (1-2°) high, flowers bright yellow; of this we have several cultivated varieties which give edible roots and seeds of some value, thus: (a) var. Na'pus, Turnip - seed larger than official black mustard, 1.6-2 Mm. (1/16-1/12') thick, brown or black, finely pitted, slightly acrid; (6) var. Ra'pa, Rape, Colza - seed larger than mustard or turnip, 2-2.5 Mm. (1/12-1/10) thick, finely pitted, blue-black, slightly acrid; both yield a bland, yellow fixed oil under the names of turnip-seed oil and rape-seed oil; (c) var. Rutaba'ga, Swedish Turnip - seed also small and contain oil and pungency.
2. Armoracice Radix, Horseradish Root (Br.). - The fresh root of Rori'pa (Cochlea'ria) Armora'cia, official 1820-1860; E. Europe, cultivated. Plant .6-1 M. (2-3°) high, in moist places; leaves 20-30 Cm. (8-120 long, 10-12.5 Cm. (4-50 wide, toothed; flowers white; fruit 2-celled pod, each 4-6-seeded; root 30 Cm. (120 long, 12-25 Mm. (1/2-1') thick, conical, yellowish, scaly, warty, inside white, many stone cells, central pith, pungent odor when bruised; taste sharp, acrid; contains volatile oil .05 p. c. (isomeric with mustard oil, C3H5NCS),
Fig. 153. - Brassica campestris.
resin. Used as condiment, rubefacient, stimulant, diuretic, for dyspepsia, rheumatism, dropsy, palsy, scurvy, hoarseness, vomiting; in infu-sion, spirit (Spiritus Armoraciae Compositus (Br.), 12.5 p. c), cataplasm. Dose, gr. 20-30 (1.3-2 Gm,); spirit, 3j-2 (4-8 Ml. (Cc.)).
3. Raph'anus Raphanis'trum, Wild Radish, Jointed Charlock, and R. sati'vus, Garden Radish. - Both contain a fixed oil resembling that from mustard, but the sulphuretted volatile oil of the latter differs in some respects. Dro'sera rotundifo'lia, +, Sundew; air-dried flowering plant; bronchitis, etc. Dose, 3ss-l (2-4 Gm.); fluidextract (67 p. c. alcohol).
Fig. 154. - Roripa Armoracia: flower: s, calyx; p, corolla; a, stamen; g, fruit carpel; n. stigma.
Fig. 155. - Roripa Armoracia: leaves: a, radical; b, cauline.