London White Cos. Sutton's Superb White Cos.
The head of this variety has the form of the Green Paris, and blanches well without tying; the outside leaves are erect, yellowish-green, and rather numerous. The extreme diameter of the entire plant, when well grown, is about fourteen inches, and its weight nearly twenty-four ounces. The seeds are white.
This is the sort most generally grown by the London market-gardeners, millions of it being produced annually within a few miles of London alone; and it has been adopted almost exclusively, by the gardeners of Paris, for cultivation in the open air. Next to the Green Paris Cos, this is the best, the largest, and the longest in running to seed, of all the summer lettuces. It is tender, brittle, and mild flavored, less hardy and a few days later than the Green Paris Cos.
Endive-Leaved Lettuce. Trans.
Lactuca intybacea.
The leaves of this species have the form of those of some of the varieties of Endive; whence the name. They are small, pale-green, broad towards the ends, cut and irregularly lobed on the borders. While young, the plants have the appearance of Green Curled Endive.
As it runs to flower much earlier than the Spinach Lettuce, it is less esteemed than that variety. The seeds should be sown thickly, in shallow drills ten or twelve inches apart; and the plants should be cut for use when they are three or four inches high.
Perennial Lettuce. Vil.
Lactuca perennis.
This species is a native of Europe; and, in habit and duration, is distinct from all others. The leaves are about ten inches long, of a glaucous or sea green color, thick and fleshy, deeply cut or divided on the margin, and spread regularly from the centre of the plant in the form of a rosette. When fully developed, the plant is two feet and a half high; separating into numerous branches, which terminate in large purple flowers.