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Ruellia L.

Kingdom: Plantae Rank: Genus Parent: Acanthaceae Status: Valid

Common Names:

  • WILD PETUNIA - English, United States of America

Morphological Description

Diagnosis: Ours glabrous or pubescent perennial herbs, the base sometimes woody; leaves sessile or shortpetioled; leaf blades narrowly lanceolate to ovate-lanceolate or oblong-elliptic; sepals united a short distance at base, acuminate; ours with corollas usually lavender to bluish purple, often with reddish or purple spots down one side, or white (in R. metziae), large and showy, opening in the morning, falling by late afternoon (some species also produce cleistogamous flowers); capsules usually explosively dehiscent.


Notes: A genus of ca. 150 species found mainly in tropical areas of the world with a number in temperate North America; some are cultivated as ornamentals. (Named for Jean Ruelle, 1474-1537, early French herbalist)