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(Last Modified On 4/8/2013)
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(Last Modified On 4/8/2013)
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Genus
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Ervatamia (A. DC.) Stapf
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PlaceOfPublication
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Fl. Trop. Africa 4(1): 126. 1904[1902].
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Synonym
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Tabernaemontana sect. Ervatamia A. DC., Prodr. 8: 373. 1844.
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Description
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Shrubs, rarely small trees, mostly glabrous, lacticiferous. Leaves opposite, non-glandular, pinnately-nerved; petiolate, stipules axillary, ? glandular in the axils. Inflorescences cymose, corymbose, or umbelliform, terminal or pseudo- axillary and opposite, few to many flowered. Flowers small to moderately showy, sometimes double in cultivars; calyx 5-lobed, the lobes ? equal, each bearing several basal squamellae within; corolla salverform, yellow-green to white, with- out appendages, the tube straight, the limb 5-lobed, mostly sinistrorsely, rarely dextrorsely, convolute; stamens 5, included, the anthers free and not agglutinated to the stigma, without an enlarged connective; gynoecium 2-carpellate, apocar pous, the ovary superior, the ovules numerous, the nectary absent (?), the style 1, the stigma fleshy below and bifid above. Fruit apocarpous, of 2 follicles, + coriaceous, obliquely ovoid to lanceolate; seeds few to many, naked, embedded in a fleshy aril.
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Distribution
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A genus of about 90 species found in the tropics of Asia, Australia, and Oceania.
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Note
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Ervatamia, originally a section of Tabernaemontana L., was elevated to generic status by Stapf. Two species are known from Panama. Ervatamia coronaria (Jacq.) Stapf, which is widely cultivated in the tropics, occurs in its double- flowered form and is unlike the Panamanian species of Tabernaemontana, the other species, E. cumingiana (A. DC.) Markgraf, appears to be very similar to Tabernaemontana except for its longer corolla tube.
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Key
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a. Flowers doubled; at least some leaves > 12 cm long ................ 1. E. coronaria aa. Flowers single; most leaves less than 10 cm long ....... ............... 2. E. cumingiana
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