1. A. tuberosa (Boerhave), or Glycine Apios.—This plant is common throughout the Northern and Southern States of America, and is also met with in the lower British North American Provinces. It is known under the native name of Saa-ga-ban by the Micmac Indians, by whom the pear-shaped roots are used as an article of food. Like the Arachis hypogæa, it belongs to the Leguminosæ family. The fruit and flower resemble those of the wood vetch. It is thus described in Professor Eaton's "Manual of Botany for North America," published in 1836:—"Color of corolla, blue and purple; time of flowering, July (and August in Nova Scotia), perennial; stem, twining; leaves, pinnate, with seven lance-ovate leaflets; racemes shorter than the leaves, axillary; root, tuberous. Root very nutritive; ought to be generally cultivated."
The average size of the tubers is that of cherries, but a few are found of much larger dimensions. In their appearance they resemble the common potato, having apparently the peculiar indentations called eyes. The skin of the tuber is of a rusty or blackish brown color. The interior is very white, and the root has the taste and odor of the common potato. The Indians state that the roots, if kept either in a dry or moist state, will not suffer any decay for a lengthened period. They are very farinaceous, and contain a large per centage of starch, which resembles that of wheat; by being dried the tuber shrinks a little, but it immediately expands on being thrown into warm water. It contains much nutritive matter, is wholesome, and I have no doubt, if properly cultivated, it will prove to be very prolific. The tubers are situated a few inches below the surface of the soil, and are strung together like beads by a strong ligament.
A similar kind of earth-nut, or tuberous root, probably the Glycine subterranea of Linnæus, the Voandzou of Madagascar, is extensively cultivated in various parts of Africa.
2. Claytonia acutiflora or Virginiana, the Musquash of the Micmac Indians, is found throughout the Northern and Southern States of North America. It is thus described by Prof. Eaton, "Man. Bot. N.A."—"Color of corolla, white and red; situation, alpine, perennial; leaves, linear, lance-ovate; petals, obovate, retuse; leaves of the calyx, somewhat acute; root, tuberous. It blossoms in May. The seed is ripe in June, when the plant disappears."
These roots may be collected along the sea coasts and principal lakes and rivers of Nova Scotia, New Brunswick, and Prince Edward's Island, although they are not plentiful, for they are greedily devoured by some of the wild animals, and wherever swine have been permitted to run at large they have been destroyed.
Dr. Gesner shipped several bushels of the saa-ga-ban to the principal agricultural societies in Great Britain, also to Halifax, and Nova Scotia. The ordinary potato of this country does not yield more than 14 per cent. of starch, and it contains 76 per cent. of water. From the best saa-ga-ban Dr. Gesner obtained 21 per cent. of starch, and the quantity of water is reduced to 50 per cent. It also contains vegetable albumen, gum, and sugar. From these facts it is evident that the saa-ga-ban is much more nutritive than the potato, and the weight of the tubers, in their wild state, compared with the weight of the slender vine in the best samples, is equal in proportion to the common cultivated potato in its ordinary growth. The starch is very white, and closely resembles that made from the arrowroot. It is not improbable that the quantity of water in the tuber will be increased by cultivation; yet the fibrous parenchyma will be reduced, and taken altogether, the nutritive properties will be increased; if the plant improve as much by cultivation as the potato and many others have done, its success is certain.
The North American Indians have several wild roots which they dig up for sustenance when other food is exhausted. Among these are—1st, the mendo, or wild sweet potato; 2nd, the tip-sin-ah, or wild prairie turnip; 3rd, the omen-e-chah, or wild bean. The first is found throughout the valleys of the Mississippi and St. Peter's, about the basis of bluffs, in rather moist but soft and rich ground. The plant resembles the sweet potato, and the root is similar in taste and growth. It does not grow so large or long as the cultivated sweet potato, but I should have thought it the same, were it not that the wild potato is not affected by the frost. A woman will dig from a peck to half a bushel a day.
The Indians eat them, simply boiled in water, but prefer them cooked with fat meat.
The wild potato, of the north-west of America, is a general article of food; it is called by them wabessepin; it resembles the common potato, is mealy when boiled, and grows only in wet clay ground, about one and a half feet deep. The crane potato, called sitchauc-wabessepin, is of the same kind, but inferior in quality. The Indians use these for food as well as the memomine, and another long and slender root called watappinee. Probably it is the first of these that is referred to by Nicollet, as the prairie potato. "All the high prairies (he says) abound with the silver-leafed Psoralia, which is the prairie turnip of the Americans, the pomme des prairies of the Canadians, and furnishes an invaluable food to the Indians." There are several species of Psoralia, viz., esculenta, argophylla, cuspidata, and lanceolata.
The prairie turnip grows on the high dry prairies, one or two together, in size from that of a small hen's egg to that of a goose egg, and of the same form. They have a thick black or brown bark, but are nearly pure white inside, with very little moisture. They are met with four to eight inches below the surface, and are dug by the women with a long pointed stick, forced into the ground and used as a lever. They are eaten boiled and mashed like a turnip, or are split open and dried for future use. In this state they resemble pieces of chalk. It is said that when thus dried they may be ground into flour, and that they make a very palatable and nutritious bread. M. Lamare Picot, a French naturalist, has lately incurred a very considerable expense to obtain the seed, which he has carried to France, believing that it is capable of cultivation, and may form a substitute both for potato and wheat.