Among us there are two principal varieties known of the onion; the scallion, employed for seasonings, is one, known to the Greeks by the name of “gethyon,” and by us as the “pallacana;” it is sown in March, April, and May. The other kind is the bulbed or headed[1060] onion; it is sown just after the autumnal equinox, or else after the west winds have begun to prevail. The varieties of this last kind, ranged according to their relative degrees of pungency, are the African onion, the Gallic, the Tusculan, the Ascalonian, and the Amiternian: the roundest in shape are the best. The red onion, too, is more pungent than the white, the stored than the fresh, the raw than the cooked, and the dried than the preserved. The onion of Amiternum is cultivated in cold, humid localities, and is the only one that is reproduced from heads,[1061] like garlic, the other kinds being grown from seed. This last kind yields no seed in the ensuing summer, but a bulb only, which dries and keeps; but in the summer after, the contrary is the case, for seed is produced, while the bulb very quickly spoils. Hence it is that every year there are two separate sowings, one of seed for the reproduction of bulbs, and one of bulbs for the growth of seed; these onions keep best in chaff. The scallion has hardly any bulb at all, but a long neck only—hence it is nothing but leaf, and is often cut down, like the leek; for this reason, too, like the leek, it is grown from seed, and not from plants. In addition to these particulars, it is recommended that the ground intended for sowing onions should be turned up three times, care being taken to remove all roots and weeds; ten pounds of seed is the proper proportion for a jugerum. Savory too, they say, should be mixed with them, the onions being all the finer for it; the ground, too, should be stubbed and hoed four times at least, if not oftener. In Italy, the Ascalonian onion is sown in the month of February. The seed of the onion is gathered when it begins to turn black, and before it becomes dry and shrivelled. CHAP. 33.—THE LEEK.