Alafia Thouars

Genus

Angiosperms > Gentianales > Apocynaceae

Characteristics

Lianas or climbing shrubs; white or clear latex in all parts (except in A. zambesiaca and occasionally A. schumannii); branches mostly lenticellate; branchlets terete, glabrous or sometimes puberulous. Leaves opposite, petiolate; ochreae often widened into intrapetiolar stipules. Inflorescence terminal, sometimes also axillary, cymose, few-or many-flowered, lax to very dense; peduncle mostly short; flowers open during the day, mostly fragrant. Sepals connate at the extreme base, ciliate, mostly with colleters within. Corolla with variously shaped heads in mature bud more or less characteristic for the species, mostly pubescent below the insertion of the stamens and interrupted between the filament ridges; lobes overlapping to the right in bud, ciliate; tube shorter or longer than the lobes; lobes entire to sinuate-crenate, spreading or recurved. Stamens with their tips reaching mouth of corolla tube; anthers sessile, sterile at the apex and below, pubescent below, coherent with the pistil head by a clavuncle. Ovary of two separate carpels (united in A. multiflora), pubescent at the apex; disk absent; pistil of a basal cone or cylinder, usually with a ring at the apex and a bilobed stigmoid apex. Fruit of two separate, thin walled, long and linear follicles (1 syncarpous in A. multiflora), dehiscent on adaxial side; seeds with a short wing at the base and a hairy coma longer than the grain attached at the apex or on a beak at the apex.
More
Corolla hypocrateriform; tube ± cylindrical, slightly wider at the middle, glabrous on outer surface except for faint alternipetalous lines of puberulence, ± glabrous within except for a circle of long stiff downwards-pointing hairs below the level of stamen-insertion; corolla lobes 5, contorted, overlapping to the right, indumentum variable.
Stamens 5, sessile, inserted at about the middle of the corolla tube and with their tips reaching to the mouth of the tube; anthers conniving in a cone round the gynoecium, polliniferous in upper part only, joined to the clavuncle by a retinacle; dorsal surface of anthers often pubescent.
Ovary of 2 free multiovulate carpels pubescent at apex; style glabrous, gradually dilated towards the clavuncle, contracted and then widened into the capitate stigma.
Leaves opposite, with a pair of triangular stipules sometimes joined into a single intrapetiolar scale, without acarodomatia or petiolar glands.
Calyx lobes imbricate, free to base, each overlapped margin with one or a pair of delicate scales inside at the base.
Seeds linear-compressed with an apical coma; endosperm absent.
Scandent shrubs and lianes with milky latex.
Flowers borne in terminal umbellate cymes.
Fruit of 2 follicular mericarps.
Spines and tendrils absent.
Receptacular disc absent.
Life form perennial
Growth form shrub
Growth support -
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) -
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color -
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light -
Soil humidity -
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) -

Usage

Uses -
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Mode -
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -