1. Family: Burseraceae Kunth
    1. Genus: Commiphora Jacq.
      1. Commiphora hornbyi Burtt

        This species is accepted, and its native range is Tanzania.

    [FTEA]

    Burseraceae, J.B. Gillett. Flora of Tropical East Africa. 1991

    Habit
    Tree 3.5–11.5 m. tall with a regular spreading crown; trunk ± 60 cm. in diameter at breast height; outer bark of trunk and larger branches peeling annually about July in large papery creamy flakes, the trees pale yellowish green before and bright blue-green after peeling; exudate strongly pine-scented, of a resinous consistency; young twigs silvery grey, fluted, sparsely puberulous at first, soon glabrescent, ± 1.6 mm. in diameter; lateral twigs, which may be short and tapering and almost at right-angles to the main branches, have been loosely described as spines but seem always to end in leaves and not to be truly spinose.
    Leaves
    Leaves 3–7-foliolate, glabrous or very sparsely puberulous; rhachis up to 6 cm. including a petiole up to 4 cm. long, often prolonged up to 8 mm. beyond the lateral leaflets; lateral petiolules up to 2 mm. long; leaflets elliptic to narrowly ovate, acute or acuminate, with serrate margins, up to 35 mm. long and 23 mm. wide, the ultimate vein-network dark and distinct but not prominent.
    Inflorescences
    Inflorescences glabrous or subglabrous umbelliform cymes on peduncles up to 5 cm. long, appearing with or before the young leaves; the ♂ 5–7-flowered, ♀ 1–3-flowered; bracts linear, 1–6 mm. long; pedicels up to 5 mm. long.
    Flowers
    Flowers glabrous, greenish yellow.
    Receptacle
    Receptacle top-shaped, ribbed, 1.5 mm. long, 1.2 mm. wide.
    Calyx
    Calyx ± 1 mm. long, divided almost to the base into triangular-ovate lobes.
    Corolla
    Petals linear-oblong, 2.3 mm. long, 0.4 mm. wide.
    Filaments
    Filaments 1.3 and 1.0 mm., anthers 1.0 and 0.9 mm. long.
    Fruits
    Fruits single or paired on peduncles up to 15 mm. and pedicels up to 11 mm. long, when fresh ± 15 × 10 mm., becoming damson-coloured, when dry 11 mm. (including a 1 mm. apiculum) × 8 × (1.3 + 2.5) mm.; pseudaril cupular at the base, with 2 broadly ovate-oblong facial lobes and no sutural lobes; stone cordate at the base, flattened-ellipsoid, 7–9 × 5–6 × (1 + 2) mm.
    Figures
    Fig. 14/1–4.
    Habitat
    Locally common in deciduous thickets and woodland; 380–1220 m.; rainfall 450–750 mm.
    Distribution
    T5 T6 T7 not known elsewhere

    Images

    Distribution

    Native to:

    Tanzania

    Commiphora hornbyi Burtt appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Nov 15, 1984 Burtt, B.D. [3963], Tanzania K000425400 Unknown type material

    First published in Bull. Misc. Inform. Kew 1935: 112 (1935)

    Accepted by

    • Govaerts, R. (1999). World Checklist of Seed Plants 3(1, 2a & 2b): 1-1532. MIM, Deurne.
    • Gillett, J.B. (1991). Flora of Tropical East Africa, Burseraceae: 1-94.

    Literature

    Flora of Tropical East Africa
    • J.P.M. Brenan, Check-lists of the Forest Trees and Shrubs of the British Empire no. 5, part II, Tanganyika Territory p. 82 (1949).
    • B.D. Burtt in Bulletin of Miscellaneous Information, Kew 1935: 112 (1935).
    • Mattick in Notizblatt des Botanischen Gartens und Museums zu Berlin-Dahelm 12: 660 (1935).

    Sources

    Flora of Tropical East Africa
    Flora of Tropical East Africa
    http://creativecommons.org/licenses/by-nc-sa/3.0

    Herbarium Catalogue Specimens
    'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.
    Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/

    Kew Backbone Distributions
    The International Plant Names Index and World Checklist of Selected Plant Families 2020. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

    Kew Names and Taxonomic Backbone
    The International Plant Names Index and World Checklist of Selected Plant Families 2020. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0