• WordNet 3.6
    • n loasa any of various perennial South American plants of the genus Loasa having stinging hairs and showy white or yellow or reddish-orange flowers
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Century Dictionary and Cyclopedia
    • n loasa A genus of dicotyledonous polypetalous herbs, of the natural order Loaseæ, characterized by either opposite or alternate leaves and a capsule three- or five-valved at the apex, rarely twisted. The flowers are pentamerous, with cucullate petals, two to five scales, and ten filiform abortive stamens, besides numerous perfect ones. There are about 50 species, growing throughout tropical America, with the exception of northern Brazil and Guiana.
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In literature:

Loasa or Blazing-star Family.
"The Wild Flowers of California: Their Names, Haunts, and Habits" by Mary Elizabeth Parsons