1. Family: Malvaceae Juss.
    1. Genus: Sterculia L.
      1. Sterculia dawei Sprague

        This species is accepted, and its native range is W. Central Tropical Africa to SW. Kenya and N. Angola.

    [FTEA]

    Sterculiaceae, Martin Cheek & Laurence Dorr; Nesogordonia, Laurence Dorr, Lisa Barnett. Flora of Tropical East Africa. 2007

    Type
    Types: Uganda, “all over”, Dawe 143; Uganda, Mengo District: Busiro, Dawe 206 (both K!, syn.)
    Habit
    Tree 9–27 m tall, to 1.5 m DBH.
    Bole
    Bole cylindrical, lacking buttresses or with large buttresses to 2.5 m,
    Bark
    Bark rough, brown to grey, flaking off in small pieces ± 1 cm wide; slash pink or red, with a reticulate pattern, rapidly turning brown.
    Branches
    Flora districts: Ultimate branchlets grey, rough and wrinkled, 5–8 mm wide; bud-scales triangular, 5 mm long, 2 mm wide, densely tomentose, with pale brown patent stellate hairs
    Leaves
    Leaf-blade widely elliptic, rarely broadly ovate or suborbicular, (10–)11–16 cm long, (5.5–)10–16(–19) cm wide, apex rounded to subacute, sometimes shortly subacuminate, base cordate, the sinus (0.3–)1–1.5(–3) cm deep, texture papery, glabrous and drying dark green above, subscabrid with sparse, pale brown cruciform hairs beneath, drying grey.
    Petiole
    Petiole slightly swollen at base and tip, terete, (2–)4–6.5 cm long, 1–3 mm wide, glabrous, rarely subscabrid, with indumentum as lower leaf surface; stipules caducous
    Inflorescences
    Inflorescences produced with the leaves, (1–)2–7 per stem, each 5–15.5 cm long, 1.5–4.5 mm wide with 10–35 branches, indumentum as bud-scales.
    Bracts
    Bracts ovate-acuminate, 7 mm long, 3 mm wide, pale brown tomentose; lowest branch 2–4 cm from the base, 0.8–3 cm long, bearing 1–4 partial peduncles each 5–9-flowered; pedicels 1.5–4.5 mm long
    Flowers
    Flowers green outside, deep red inside, with campanulate perianth 4–7 mm long, 4–5 mm wide, divided into 5 triangularacute lobes 1–1.5 mm long, 0.7–1 mm wide, outside with appressed, wide, flaccid, colourless, simple hairs, inner surface largely glabrous except the teeth and extreme base which densely covered in fine white simple hairs.
    Fruits
    Fruit usually with 3 follicles; follicles ellipsoid, 6–10 cm long, 3–4.5 cm wide, dehiscing flat, then ± 4.5 cm long, 8–10.5 cm wide, rostrum short and blunt, 0.3–0.9 cm long, stipe stout, 0.7–1 cm long, pericarp woody, 3–6 mm thick, outer surface red, then rusty brown, tomentellous, inner surface softly tomentose, pale brown.
    Seeds
    Seeds glossy black, ellipsoid, 13–19 mm long, 9–11 mm wide, hilum white, terminal, elliptic 1–2 mm long with on a long margin a small globose orange aril, 0.5–1 mm wide; seed-stalk absent, detached seed leaving a white elliptic scar on the inner pericarp surface.
    Ecology
    Forest; 900–1500 m
    Conservation
    This species is here assessed as “Least Concern” in view of its large geographic range and because of its common habitat.
    Note
    The leaves of S. dawei are similar to and so confused with those of Chlorophora ( Milicia), Uganda’s most valuable timber tree. In East Africa, Sterculia dawei is closely related to S. schliebenii and S. tragacantha. It is most easily distinguished from both by its cordate leaves, with characteristic cruciform hairs sparsely distributed beneath. It is odd that S. purpurea and S. bequaertii have not been reduced to synonymy before now.
    Distribution
    Flora districts: U2 U4 K5 Range: Cameroon, Gabon, Congo-Kinshasa, Angola

    Images

    Distribution

    Native to:

    Angola, Cabinda, Cameroon, Central African Repu, Congo, Gabon, Gulf of Guinea Is., Kenya, Uganda, Zaïre

    Sterculia dawei Sprague appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    May 16, 1905 Dawe [206], Uganda K000240950
    Gossweiler, J. [4838], Angola K000240942
    Gossweiler, J. [4838], Angola K000240943
    Dawe [143], Uganda K000240948
    Dawe [143] K000240949
    Gossweiler, J. [6544] Sterculia purpurea K000240956
    Corbisier [1055] Sterculia bequaertii K000240958

    First published in Bull. Herb. Boissier, sér. 2, 5: 1167 (1905)

    Accepted by

    • Kalema, J. & Beentje, H. (2012). Conservation checklist of the trees of Uganda: 1-235. Kew Publishing, Royal Botanic Gardens, Kew.
    • Lejoly, J. & Geerinck, D. (2010). Flore de la Tshopo (RD Congo): Familles des Malvaceae, Orchidaceae, Sterculiaceae, Tiliaceae Taxonomania 29: 1-41.
    • Cheek, M. & Dorr, L. (2007). Flora of Tropical East Africa, Sterculiaceae: 1-134.

    Literature

    Kew Backbone Distributions
    • Kalema, J. & Beentje, H. (2012). Conservation checklist of the trees of Uganda: 1-235. Kew Publishing, Royal Botanic Gardens, Kew.
    • Figueiredo, E., Paiva, J., Stévart, T., Oliveira, F. & Smith, G.F. (2011). Annotated catalogue of the flowering plants of São Tomé and Príncipe Bothalia, A Journal of Botanical Research 41: 41-82.
    • Lejoly, J. & Geerinck, D. (2010). Flore de la Tshopo (RD Congo): Familles des Malvaceae, Orchidaceae, Sterculiaceae, Tiliaceae Taxonomania 29: 1-41.
    • Figueiredo, E. & Smith, G.F. (2008). Plants of Angola Strelitzia 22: 1-279. National Botanical Institute, Pretoria.
    • Cheek, M. & Dorr, L. (2007). Flora of Tropical East Africa, Sterculiaceae: 1-134.
    • Sita, P. & Moutsambote, J.-M. (2005). Catalogue des plantes vasculaires du Congo, ed. sept. 2005: 1-158. ORSTOM, Centre de Brazzaville.
    • Boulvert, Y. (1977). Catalogue de la Flore de Centrafrique 1: 1-114. ORSTROM, Bangui.
    Flora of Tropical East Africa
    • K.T.S.L.: 167 (1994).
    • Hamilton, Uganda For. Trees: 118 (1981)
    • I.T.U.: 422 (1952)
    • Bull. Herb. Boiss. sér. 2, 5: 1167 (1905)

    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 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