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Herbs or subshrubs. Leaves entire or dentate. Verticillasters few to many flowered, widely spaced, uniform or reduced in size at end of branches. Calyx tubular to obconical, rarely dilated, 10-veined, straight or curved, truncate or oblique at throat, projected on posterior side; teeth 8-10, usually equal in size. Corolla usually white, rarely yellow, purple, brownish, or scarlet, 2-lipped, tube included; upper lip straight, galeate, densely villous outside; lower lip longer, 3-lobed, middle lobe largest. Stamens ascending beneath upper lip of corolla, close together in pairs; anther cells 2, ovoid, divaricate, apex confluent, often orange. Style unequally 2-cleft at apex, posterior lobe short or obsolete. Nutlets ovoid, triquetrous, subtruncate at apex.

About 100 species: Africa, Asia, Australia, Pacific Islands, two naturalized in South America; eight species in China.[1]


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The Genus Leucas is a member of the Family Labiatae. Here is the complete "parentage" of Leucas:

The Genus Leucas is further organized into finer groupings including:


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  1. "Leucas". in Flora of China Vol. 17 Page 141. Published by Science Press (Beijing) and Missouri Botanical Garden Press. Online at


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Last Revised: August 27, 2014
2014/08/27 06:58:29