Alafia Thouars
  • Gen. Nov. Madagasc. 11. 1806.


Cite taxon page as 'WFO (2019): Alafia Thouars. Published on the Internet; http://www.worldfloraonline.org/taxon/wfo-4000001075. Accessed on: 18 Oct 2019'

Morphology

Fruit of 2 follicular mericarps.

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    Scandent shrubs and lianes with milky latex.

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    • 7
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    Seeds linear-compressed with an apical coma; endosperm absent.

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    Spines and tendrils absent.

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    Ovary of 2 free multiovulate carpels pubescent at apex; style glabrous, gradually dilated towards the clavuncle, contracted and then widened into the capitate stigma.

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    • 7
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    Receptacular disc absent.

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    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.

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    • Source: [
    • 7
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    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.

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    Calyx lobes imbricate, free to base, each overlapped margin with one or a pair of delicate scales inside at the base.

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    • 7
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    Flowers borne in terminal umbellate cymes.

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    • 7
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    Leaves opposite, with a pair of triangular stipules sometimes joined into a single intrapetiolar scale, without acarodomatia or petiolar glands.

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    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

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    Inflorescence terminal, sometimes also axillary, cymose, few- or many-flowered, lax to very dense; peduncle mostly short; flowers open during the day, mostly fragrant

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    Leaves opposite, petiolate; ochreae often widened into intrapetiolar stipules

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    • 8
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    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

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    Sepals connate at the extreme base, ciliate, mostly with colleters within

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    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

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    • Source: [
    • 8
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    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

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    • Source: [
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    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.

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      Bibliography

     Information From

    Apocynaceae
    World Flora Online Data. 2017.
    • A CC0 1.0 Universal (CC0 1.0).
    Plants Of the World Online Portal - FZ
    https://www.kew.org/science/who-we-are-and-what-we-do/strategic-outputs-2020/plants-of-the-world-online
    http://www.plantsoftheworldonline.org/terms-and-conditions
    • B
    Plants Of the World Online Portal - FTEA
    https://www.kew.org/science/who-we-are-and-what-we-do/strategic-outputs-2020/plants-of-the-world-online
    http://www.plantsoftheworldonline.org/terms-and-conditions
    • C
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • D CC0 1.0 Universal (CC0 1.0).