Iva

• Authority

  Britton, Nathaniel L. & Millspaugh, Charles F. 1920. The Bahama Flora.

• Family

  Asteraceae

• Scientific Name

  Iva

• Description

  Description - Puberulent or scabrous herbs or shrubs, with thick opposite leaves, or the upper alternate, and small nodding, axillary and solitary, spieate racemose or paniculate heads of greenish flowers. Involucre hemispheric or cup-shaped, its bracts few, rounded. Receptacle chaffy, the linear or spatulate chaff enveloping the flowers. Marginal flowers 1-6, pistillate, fertile, their corollas short, tubular or none. Disk-flowers perfect, sterile., their corollas funnelform, 5-lobed, their styles undivided, dilated at the apex. Anthers entire at the base, yellow, scarcely coherent with each other, tipped with mucronate appendages. Achenes compressed, obovoid, glabrous. Pappus none. [Xamed after Ajuga Iva, from its similar odor.] About 12 species, natives of America. Type species: Iva annua L.