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

[FSOM]

M. Thulin et al. Flora of Somalia, Vol. 1-4 [updated 2008] https://plants.jstor.org/collection/FLOS

Morphology Reproductive morphology Fruits
Fruit 3(–4)-celled, 17–27 x 7–9 mm, angular, pear-shaped, pubescent; stones rough, having apical and basal horns and 2 lateral points, surrounded at first by a fragile caducous wing.
Distribution
N1, 2; C1, 2; S1; SE Ethiopia, NE Kenya
Ecology
Altitude range 200–920 m.
Vernacular
Beyo, mirafur, muqlay, murchen (Somali).
Morphology General Habit
Spreading shrub or small tree, up to 7 m tall, often wider than tall; bark yellowish to greyish, peeling in small papery flakes
Morphology Leaves
Leaves narrowly oblanceolate in outline, up to 18 cm long, the 3–20 mm long petiole included, pubescent-pilose with hairs up to 1 mm long, 11–29-foliolate; leaflets elliptic. to ovate-oblong, up to 7–23 x 3–12 mm, obtuse to subacute at the apex, rounded to truncate at the base, crenate-serrate at the margin
Morphology Reproductive morphology Inflorescences
Flowers in few-flowered pubescent racemes or panicles 1.5–6 cm long; bracts elliptic-oblong, 3–4(–8) mm long; pedicels 3–10 mm long
Morphology Reproductive morphology Flowers
Calyx pubescent, c. 1.2 mm long; petals 5–6 x 1.5 mm, pink, pubescent outside; filaments tapering evenly from the base, c. 3 mm long, densely pilose

[FTEA]

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

Morphology General Habit
Shrub or small tree with a short bole, up to 7 m. tall; bark mottled yellowish grey, peeling in small papery flakes.
Morphology 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.
Morphology Reproductive morphology Flowers
Flowers pink, pubescent, in few-flowered pubescent panicles 2–5 cm. long; pedicels 3–8 mm. long.
Morphology Reproductive morphology Flowers Calyx
Calyx ± 1.5 mm. long with broad blunt lobes.
Morphology Reproductive morphology Flowers Corolla
Petals elliptic, 4–6 mm. long, 1.5 mm. wide.
Morphology Reproductive morphology Flowers Androecium Stamens Filaments
Filaments densely pilose, ± 3 mm. long, tapering gradually from the base; anthers 1.5 mm. long.
Morphology Reproductive morphology 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

[FSOM]
Use
The gum-resin is used locally as incense or for chewing.

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

  • Gillett, J.B. (1991). Flora of Tropical East Africa, Burseraceae: 1-94.
  • Govaerts, R. (1996). World Checklist of Seed Plants 2(1, 2): 1-492. MIM, Deurne.
  • 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.
  • Thulin, M. (2020). The genus Boswellia (Burseraceae). The Frankincense trees Symbolae Botanicae Upsalienses; Arbeten Fran Botaniska Institutionen i Uppsala 39: 1-149.
  • Thulin, M. (ed.) in Thulin, M. (ed.) (1999). Flora of Somalia 2: 1-303. The Royal Botanic Gardens, Kew.

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 Somalia

  • Flora Somalia, Vol 2, (1999) Author: by M. Thulin [updated by M. Thulin 2008]

Flora of Tropical East Africa

  • Chiov., Fl. Somala, 2: 51 (1932).
  • Dale & Greenway, Kenya Trees and Shrubs p. 76, fig. 16/c–e (1961).
  • Engl. in Ann. Ist. Bot. Roma 7: 16 (1897).
  • Vollesen in Fl. Eth. 3: 443, fig. 123.1K–N (1990).

Flora of Somalia
Flora of Somalia
http://creativecommons.org/licenses/by-nc-sa/3.0

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

Herbarium Catalogue Specimens

Kew Backbone Distributions
The International Plant Names Index and World Checklist of Selected Plant Families 2021. 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 2021. 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