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Coleus Lour.

鞘蕊花属

Description from Flora of China

Herbs or shrubs. Leaves petiolate, dentate. Verticillasters 6- to many flowered, in racemes or panicles; bracts early deciduous or absent. Flowers pedicellate. Calyx ovoid-campanulate to campanulate, 5-toothed or conspicuously 2-lipped, posterior tooth larger; fruiting calyx dilated, declinate or recurved, throat glabrous or villous. Corolla much exserted, erect or recurved, 2-lipped; upper lip (3- or) 4-lobed, strongly reflexed; lower lip entire, elongated, navicular, narrowed at base. Stamens 4, declinate, included within lower lip; filaments connate or free, rarely adnate to corolla tube; anther cells apex confluent. Style apex equally 2-cleft. Nutlets ovoid to globose, smooth, tuberculate or not.

About 90(-150) species: tropics of E hemisphere, Australia; six species in China.

Many workers believe that the type species of Coleus is congeneric with Plectranthus s. str., a large predominantly African genus, but some of the Asian species have never been formally transferred to that genus. There is much less agreement on the status of other segregate genera.

Lower Taxon


 

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