Psychotria capensis

From Wikipedia, the free encyclopedia
Psychotria capensis
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Gentianales
Family: Rubiaceae
Genus: Psychotria
Species: P. capensis
Binomial name
Psychotria capensis
(Eckl.) Vatke

Psychotria capensis (Eckl.) Vatke is a Southern African evergreen shrub or small tree occurring along the east coast from Knysna through the Eastern Cape and KwaZulu-Natal, Mpumalanga, Northern Cape, Mozambique and Zimbabwe. It is found from sea level to 1500 m in evergreen forests, along forest margins, dune scrub, along river courses and on rocky outcrops in high rainfall grassland.

Growing from 3-8 m, it has a slender trunk, with horizontal branches and pale brown bark. The elliptic to obovate leaves are large (70-150 x 15-60 mm), leathery, glabrous, dark green above and paler below. They are opposite and often drooping. Yellow flowers are produced in terminal branched heads some 80 mm across from August to January, and are followed by bunches of pea-sized, shiny yellow fruits turning red or black when ripe. The wood is hard and fine-grained, yellowish-brown in colour. The genus is used medicinally wherever it occurs, 'Psychotria' being from the Greek for 'rejuvenating', in reference to the healing properties of certain species.

Kew lists some 2000 species of Psychotria growing throughout the warmer regions of both hemispheres. Only two species occur in southern Africa, P. capensis and P. zombamontana. [1][2][3]

Usually a shrub, sometimes a tree up to 10-15 feet height, with 3-6 inch stem diam., and with crooked and forked timber. Leaves evergreen, shining above, paler below, widely lanceolate, elliptic or obovate-oblong, 3-6 inches long, 1/2 - 1 1/2 inches wide, shortly petioled, distinctly veined, rounded at the apex or bluntly pointed, glabrous above, and either glabrous or pubescent below. Panicles few or many-flowered, terminal, trichotomously forked, 1-4 inches across. Calyx-tube short, minutely 5-toothed. Corolla yellow, shortly tubular, with 5-parted limb and a hairy throat. Stamens in the throat of the corolla tube, with shortly oblong anthers. Pistil bifid. Berries numerous, reddish, 3 lines diameter, with only a scar where the calyx has been.Stipules shortly ovate from a broad base, bluntly pointed. John Medley Wood points out that the flowers are dimorphic, the two forms appearing on different plants, in the long-styled form the stamens are sub-exserted and the style exserted, and in the long-stamened form the stamens are exserted and the style included.

External links

References

This article is issued from Wikipedia. The text is available under the Creative Commons Attribution/Share Alike; additional terms may apply for the media files.