The Martynia.
A hardy, annual plant, with a strong, branching stem two feet and a half or three feet high. The leaves are large, heart-shaped, entire or undulated, downy, viscous, and of a peculiar, musk-like odor when bruised or roughly handled; the flowers are large, bell-shaped, somewhat two-lipped, dull-white, tinged or spotted with yellow and purple, and produced in long, leafless racemes, or clusters; the seed-pods are green, very downy or hairy, fleshy, oval, an inch and a half in their greatest diameter, and taper to a long, comparatively slender, incurved horn, or beak. The fleshy, succulent character of the pods is of short duration: they soon become fibrous, the elongated beak splits at the point, the two parts diverge, the outer green covering falls off, and the pod becomes black, shrivelled, hard, and woody. The seeds are large, black, wrinkled, irregular in form, and retain their germinative properties three years.
Sowing and Cultivation.—The Martynia is of easy cultivation. As the plants are large and spreading, they should be two feet and a half or three feet apart in each direction. The seeds may be sown in April or May, in the open ground where the plants are to remain; or a few seeds may be sown in a hot-bed, and the seedlings afterwards transplanted.
Gathering and Use.—The young pods are the parts of the plant used. These are produced in great abundance, and should be gathered when about half grown, or while tender and succulent: after the hardening of the flesh, they are worthless. They are used for pickling, and by many are considered superior to the Cucumber, or any other vegetable employed for the purpose.
OIL RADISH. Law.
Raphanus sativus.
A variety of the Common Radish, particularly adapted for the production of oil, and distinguished by the name R. sativus olifer, or Oil Radish. Its stems are dwarf, from a foot and a half to two feet in height, much branched, spreading, and produce more seed-pods than the Common Radish. It is grown rather extensively in China for its oil; from whence it has been introduced into and cultivated in some parts of Europe: but it does not appear with any particular success, though much has been said and written in its favor.
It seems best suited for southern latitudes, where it may be sown in September, and harvested the following May or June: but, in the northern portions of the United States, it will be found too tender to withstand the winter; and the seed will therefore require to be sown in spring.