• WordNet 3.6
    • n Psoralea widely distributed genus of herbs or shrubs with glandular compound leaves and spicate or racemose purple or white flowers
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Century Dictionary and Cyclopedia
    • n psoralea A genus of leguminous herbs and shrubs of the tribe Galegeæ, the type of the subtribe Psoralieæ, characterized by an ovary with one ovule, an indehiscent pod with its seed adherent, and entire calyx-lobes which are unchanged in fruit. There are about 105 species—over 40 in South Africa, 30 in North America, and others in both tropical and temperate regions. They are peculiar in their glandular-dotted herbage, and bear compound leaves usually of three leaflets, and purple, blue, red, or white flowers, in heads or spikes, or variously clustered. Many species have been cultivated on account of their flowers, both for the lawn and for the greenhouse. P. esculenta, of the plains from the Saskatchewan to Texas, yields an edible tuberous root, known as pomme-de-prairie, pomme-blanche, prairie-turnip, prairie-apple, Cree potato, or Missouri bread-root. Its introduction into Europe as an esculent was unsuccessfully attempted at the time of the potato-rot. It is a rough-hairy plant with palmate leaves and dense oblong spikes of purplish flowers, and once yielded a great part of the food of the Indians. P. Lupinellus is the small lupine of southern pine-barrens, a slender plant with violet flowers. P. bituminosa is the bitumen-trefoil, an evergreen shrnb of the south of Europe. P. glandulosa is the Jesuit's tea or Mexican tea, known in Chili as culen, and there used to form a medicinal drink, also as a purgative and for poultices. For P. corylifolia, see bawchan-seed.
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In literature:

Subgenus forsan Psoraleae, cui habitu simile, foliis calycibusque pariter glandulosis; diversum dehiscentia insolita antherarum!
"Expedition into Central Australia" by Charles Sturt
Psoralea patens, volume 2 page 8.
"Three Expeditions into the Interior of Eastern Australia, Vol 1 (of 2)" by Thomas Mitchell
This day we met with a new species of Psoralea.
"Three Expeditions into the Interior of Eastern Australia, Vol 2 (of 2)" by Thomas Mitchell
Psoralea corylifolia, L. 213.
"Southern Arabia" by Theodore Bent