. Textbook of pastoral and agricultural botany, for the study of the injurious and useful plants of country and farm. nt, or straight (Fig. 76). The fruit is apod, or legume, occasionally a transversely divided pod, known as the division of the loment is usually one-seeded. The seeds are large 184 PASTORAL AND AGRICULTURAL BOTANY or small and exalbuminous that is, with the reserve food stored in the seedleaves, or cotyledons, which become fleshy as a consequence. Economic Plants.—The economic plants of the family are numerousand their uses are manifold, on account of the presence o
. Textbook of pastoral and agricultural botany, for the study of the injurious and useful plants of country and farm. nt, or straight (Fig. 76). The fruit is apod, or legume, occasionally a transversely divided pod, known as the division of the loment is usually one-seeded. The seeds are large 184 PASTORAL AND AGRICULTURAL BOTANY or small and exalbuminous that is, with the reserve food stored in the seedleaves, or cotyledons, which become fleshy as a consequence. Economic Plants.—The economic plants of the family are numerousand their uses are manifold, on account of the presence of starch andprotein, as reserve materials in their seeds and other parts. Many legumi-nous plants are used as human food. Such are the peas (Pisum), beans{Phaseolus), broad bean {Vicia), soy (Soja), peanut {Arachis), lentil {Lens),whose seeds are used in various ways, and the pods of carob {Ceratonia)and tamarind (Tamarindus), are eaten by man. The fodder plants ofthe family include the clovers {TrifoUum), alfalfa {Medicago) sweet clover{Melilotus) sainfoin (OwoferycAw), serradella (Ornithopus), cowpea (Vigna). Fig. 76.—Pistil of flower of common bean {Phaseolus vulgaris). {Robbins after Knulh.) Timber Trees.—The trees of the family useful for timber and structuralwood are logwood (Hcematoxylon campechianum), black locust (Robiniapseudacacia), mesquite {Prosopis juUflora), rosewood {Dalbergia latifolia)and others. The plants, which are capable of producing commercialfibers, are Croialaria juncea, Seshania cannabina, S. esculenta, Aeschyno-mene spinulosa, Erythrina suberosa, etc. A considerable number ofplants yield gums, such as, copaiva balsams (Copaifera), balsam oflolu {Tolmfera), copal {HymencBa), gum arable {Acacia), gum kino{Pterocarpus). As dye-yielding plants may be mentioned species ofGenista (yellow), Indigofera (blue), Mucnna pruriens, (black), Hcema-toxylon (purple). GENERAL CHARACTERISTICS OF THE LEGUMINOS^ 185 Drugs,—The important drugs of this family are
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