Commiphora Jacq.
  • Pl. Hort. Schoenbr. 2: 66. 1797.


Cite taxon page as 'WFO (2020): Commiphora Jacq. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-4000009054. Accessed on: 24 Nov 2020'

Morphology

Fruit an ovoid or ellipsoid or globose drupe; exocarp ± fleshy or occasionally leathery, resinous, splitting when ripe into 2 longitudinal valves (4 valves in a few species outside our area); mesocarp forming a pseudaril intimately clasping the endocarp or part of the endocarp, very variable in shape (rarely apparently absent); endocarp crustaceous or bony, smooth or rugose, enclosing one fertile loculus and a smaller abortive loculus.

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    Ovary (absent or rarely vestigial in male flowers), 2 (3)-locular with 2 ovules per loculus; style very short; stigma capitate, obscurely 4-lobed.

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    Seed with a straight embryo; cotyledons much folded.

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    Disk apparently absent (lining the calyx-tube) or of 8 small lobes alternating with the stamens or of 4 lobes opposite the longer stamens (not so well developed in female flowers).

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    Stamens 8 (vestigial in female flowers), inserted just outside the disk, antisepalous ones longer; filaments subterete or broadened and flattened towards the base; anthers oblong, those of the shorter stamens usually mucronulate.

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    Petals 4, valvate, straight, spreading or recurved at the apex and the latter usually somewhat hooded and mucronulate.

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    Calyx narrowly infundibuliform, cylindric, campanulate or broadly campanulate, with 4 valvate persistent lobes.

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    Flowers small, unisexual or more rarely apparently bisexual.

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    Inflorescences often appearing before the leaves, of axillary ± elongated paniculate sometimes dichasial cymes or ± reduced to abbreviated usually 1–2-flowered axillary cymes often borne on abbreviated side-shoots.

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    Leaves usually grouped at the ends of the branches, alternate, petiolate or more rarely sessile, 1-foliolate or 3-foliolate or imparipinnate or rarely simple; leaf or leaflet margins entire or variously dentate, surface usually reticulately veined below.

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    Dioecious (rarely monoecious) shrubs or trees, often spiny; bark papery or smooth, often secreting an odoriferous resin.

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    Receptacle flat (fig. 6/3, p.34), saucer- (fig. 7/5, p.41), cup- (fig. 12/4, p.69) or funnel-shaped (fig. 12/11)

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    Inflorescences, which are often precocious, maybe elongated panicles or dichasial cymes or reduced to few-flowered clusters or single flowers; ♂ inflorescence often larger and looser than the 9- Flowers pedicellate or sessile, small, regular, greenish yellow or dark red, usually imperfectly unisexual, the ♂ with or without a vestigial, rarely functional, ovary, the ♀ with reduced, occasionally functional, stamens

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    Petals 4 or very rarely 5, free, valvate, or slightly imbricate

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    Calyx cup-shaped or tubular, with 4 or very rarely 5 valvate lobes

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    Leaves usually soon caducous, usually 3-foliolate or imparipinnate with (in Flora area) strictly opposite leaflets, less often 1-foliolate or simple; long-shoot leaves often with more leaflets than short-shoot leaves

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    Cotyledons (where observed), flat or plicate, entire, ± as broad as long (see fig. 3/3, p.10)

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    A lobed disc is usually present

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    Stamens 8 in two whorls of 4 or, in a few species, 4 only, shorter than, or, rarely, as long as the petals

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    Fruit a drupe, the fleshy or leathery pericarp composed of fused ectocarp and mesocarp splitting when ripe into 2 or, less often, 4 or very rarely 3 valves to disclose the hard stone (putamen) which is usually covered, at least at the base, by a fleshy variously lobed red, orange or yellow pseudaril (which has wrongly been called the mesocarp but is really an outgrowth of the endocarp); this attracts birds thus assisting the dispersal of the stone; the stone usually consists of a fertile 1-seeded locule and a sterile locule; in a few species both locules may sometimes, or perhaps always be fertile; in a few species 3 fertile locules have been recorded as a rare abnormality; the fertile locule may show an oval ‘shield of dehiscence’ extending downwards from the apex which splits open in germination; two apical pits between the locules may or may not be present, these probably assist the absorption of water before germination

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    Ovary 2- or very rarely, 3-locular, with 2 pendulous ovules in each locule; style short; stigma subcapitate, obscurely 4-lobed

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    Outer bark of trunk and large branches usually translucent and peeling away from the green under-bark.

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    Exudate a gummy resin or liquid and volatile, often aromatic, the exudate may be copious, scanty or hardly apparent; it is not clear whether this is a genetically based character, more or less constant for each taxon or dependent on edaphic or seasonal factors.

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    Small or medium-sized trees or shrubs, usually imperfectly dioecious, rarely monoecious

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    Wood soft, light, sometimes used by pastoralists to make household utensils.

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    Ultimate branches either long-shoots on which the leaves are spirally arranged or condensed short-shoots bearing leaves in clusters; either long- or short-shoots or both may or may not be spine-tipped; flowers usually produced on short-shoots

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    Arbustes'à arbres parfois monoïques, souvent épineux, généralement tropophiles; écorce à résine odorante.'Feuilles'alternes, sessiles ou pétiolées, généralement 1- ou 3-foliolées, quelquefois pennées, rarement simples; folioles entières ou denticulées.'Inflorescences'en panicules ou en fascicules, généralement assez courtes.'Fleurs'petites; réceptacle concave; calice cupuliforme, urcéolé ou tubulaire à 4 lobes valvaires persistants; pétales 4, dressés ou à apex étalé, valvaires; étamines 8, didynames, les oppositisépales plus grandes, insérées sur un disque ou non; anthères ovales, très rudimentaires dans les fleurs ♀; ovaire sessile, ovoïde, 2-3-loculaire; ovules 2 par loge, pendants; style court; stigmate obtus et bilobé.'Fruits'drupacés, ovales à subglobuleux; exocarpe coriace ou charnu; mésocarpe souvent charnu; noyaux généralement 2, très souvent comprimés et ± cohérents, coriaces ou ligneux; loges 2 dont l'une fertile et ± développée et l'autre stérile et plus petite, séparées par une petite cavité, rarement 2 loges fertiles.'Graines droites, à cotylédons foliacés et condupliqués; radicule petite.\n\t\t\t\tEnviron 165 espèces des régions sèches et arides de l'Afrique tropicale et subtropicale, de Madagascar, de l'Arabie et de l'Hindoustan; au Congo belge 4 espèces.\n\t\t\t\tLa taxonomie du genre'Commiphora Jacq. est principalement basée sur la forme des feuilles ainsi que le montre la clé des groupes publiée par Engler (l.c., p. 45). De nombreuses espèces ont été décrites, dans bien des cas d'après matériel stérile, les feuilles apparaissant après la floraison.

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    Included Species

    Synonyms

      Bibliography

     Information From

    Burseraceae
    World Flora Online Data. 2017.
    • A CC0 1.0 Universal (CC0 1.0).
    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
    • B
    Flore d'Afrique Centrale
    https://www.floredafriquecentrale.be
    • C http://creativecommons.org/licenses/by/4.0/ Attribution 4.0 International (CC BY 4.0)
    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
    • D
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • E CC0 1.0 Universal (CC0 1.0).