• WordNet 3.6
    • n Swainsona a genus of Australian herbs and subshrubs: darling peas
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Century Dictionary and Cyclopedia
    • n swainsona A genus of leguminous plants, of the tribe Galegeæ and subtribe Coluteæ. It is characterized by flowers with a roundish spreading or reflexed banner-petal, a broad incurved keel which is obtuse or produced into a twisted beak, a curving style which is bearded lengthwise and inwardly or rarely on the bank, and by an ovoid or oblong swollen pod which is coriaceous or membranous and often longitudinally two-celled by the intrusion of the seed-bearing suture. There are about 28 species, all natives of Australia or (one species) of New Zealand. They are herbs or shrubs, either smooth or clothed with somewhat appressed hairs. They have odd-pinnate leaves of many entire leaflets, commonly with broad leaf-like stipules, and bluish, purplish, or red, rarely white or yellowish flowers in axillary racemes. Several species are cultivated under the name Swainson pea; especially two species with large pink or red flowers, S. Greyana with a white cottony calyx and S. galegifolia with the calyx smooth, both also known as Darling-river pea, or as poison-pea, being said to poison stock; the latter is also called indigo-plant and horse-poison plant.
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In literature:

Swainsona unifoliolata, F.M., Fragm., 8, 226.
"Australia Twice Traversed, The Romance of Exploration" by Ernest Giles
Effects of Darling Pea (Swainsona Galegifolia) upon Sheep.
"Barium, A Cause of the Loco-Weed Disease" by Albert Cornelius Crawford