1. Family: Burseraceae Kunth
    1. Genus: Boswellia Roxb. ex Colebr.
      1. Boswellia rivae Engl.

        This species is accepted, and its native range is E. & S. Ethiopia to NE. Kenya.

    [FTEA]

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

    Habit
    Shrub or small tree with a short bole, up to 7 m. tall; bark mottled yellowish grey, peeling in small papery flakes.
    Leaves
    Leaves up to 18 cm. long, pilose-pubescent with stiff erect hairs ± 0.4 mm. long; petiole 4–16 mm. long; leaflets 13–25, opposite or alternate, almost sessile, oblong, rounded at base and apex, crenate, up to 18 mm. × 10 mm. near the middle of the leaf, rather smaller above, much smaller below, the lowest sometimes only 2 mm. long.
    Flowers
    Flowers pink, pubescent, in few-flowered pubescent panicles 2–5 cm. long; pedicels 3–8 mm. long.
    Calyx
    Calyx ± 1.5 mm. long with broad blunt lobes.
    Corolla
    Petals elliptic, 4–6 mm. long, 1.5 mm. wide.
    Filaments
    Filaments densely pilose, ± 3 mm. long, tapering gradually from the base; anthers 1.5 mm. long.
    Fruits
    Fruit grey-green, sparsely pubescent, ± 20 mm. long × 9 mm. wide; nutlets with apical, lateral and basal spines.
    Figures
    Fig. 2/2–10.
    Habitat
    Open Acacia, Commiphora bushland on limestone hills: 270–750 m.; rainfall ± 220 mm.
    Distribution
    K1

    Distribution

    Native to:

    Ethiopia, Kenya, Somalia

    Boswellia rivae Engl. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Ellis, P.E. [114], Ethiopia 15448.000
    Bally, P. [B 14580], Kenya 61727.000

    First published in Ann. Bot. (Rome) 7: 16 (1907)

    Accepted by

    • Thulin, M. (ed.) in Thulin, M. (ed.) (1999). Flora of Somalia 2: 1-303. The Royal Botanic Gardens, Kew.
    • Govaerts, R. (1996). World Checklist of Seed Plants 2(1, 2): 1-492. MIM, Deurne.
    • Gillett, J.B. (1991). Flora of Tropical East Africa, Burseraceae: 1-94.
    • Hedberg, I. & Edwards, S. (eds.) (1989 publ. 1990). Flora of Ethiopia and Eritrea 3: 1-659. The National Herbarium, Addis Ababa University, Ethiopia & The Department of Systematic Botany, Upps.

    Literature

    Kew Backbone Distributions
    • Thulin, M. (ed.) in Thulin, M. (ed.) (1999). Flora of Somalia 2: 1-303. The Royal Botanic Gardens, Kew.
    Flora of Tropical East Africa
    • Vollesen in Fl. Eth. 3: 443, fig. 123.1K–N (1990).
    • Dale & Greenway, Kenya Trees and Shrubs p. 76, fig. 16/c–e (1961).
    • Chiov., Fl. Somala, 2: 51 (1932).
    • Engl. in Ann. Ist. Bot. Roma 7: 16 (1897).

    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.

    Kew Backbone Distributions
    The International Plant Names Index and World Checklist of Selected Plant Families 2019. 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 2019. 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