1. Family: Malvaceae Juss.
    1. Genus: Sterculia L.
      1. Sterculia schliebenii Mildbr.

        This species is accepted, and its native range is SE. Kenya to N. Mozambique.

    [FTEA]

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

    Type
    Type: Tanzania, Lindi District: Lake Lutamba, 40 km W of Lindi, Schlieben 5243 (B, holo., probably destroyed; lecto. MAD, designated by Dorr in K.B. 59: 161 (2004); LISC, P!, S, iso.)
    Habit
    Deciduous tree 4–16 m tall, sometimes branching from the base.
    Bark
    Bark very rough, grey or brown, slash pink, watery; ultimate branchlets ridged or smooth, 3–5(–8) mm wide, becoming grey with scattered tuberculate lenticels; bud-scales narrowly triangular, 4–5 mm long, 1–2 mm wide
    Leaves
    Leaf-blade obovate, sometimes slightly pandurate, (5–)8–18(–22) cm long, (3–)6–10(–1) cm wide, apex rounded to truncate, subacuminate, base obtuse, rarely truncate or subcordate, papery, glabrous to subscabrid above, tomentellous, subscabrid to glabrescent beneath with small fine pale brown appressed stellate hairs; petiole terete, (1.5–)3–5.5(–8) mm long, 1–2 mm wide, pale brown, subscabrid with indumentum as leaf-blade; stipules caducous. Inflorescences in clusters of 3–13 from the apex of leafless stems, each 4–7 cm long, 1–1.5(–3) cm wide, indumentum of purple, patent hairs, main axis bearing 9–12 short branches, the lowest 0.5–2 cm from the base, 0.3–2.1 cm long, bearing 1–3 partialpeduncles each with 1–3(–5) flowers; bracts narrowly triangular to linear, 4–5 mm long, 1–2 mm wide; pedicels 1–5 mm long
    Flowers
    Flower perianth widely campanulate, 3–3.5(–7) mm long, 4–4.5(–8.5) mm wide, divided into 4–5(–7) triangular, acute, reflexed lobes 2–2.5 mm long, 2 mm wide, the outer surface pink, drying red, with purplish patent stellate hairs, the inner surface greenish white, drying grey, with short white simple hairs Male flowers with androphore 2–3 mm long Female flowers with gynophore slightly tapered, 0.5–1 mm long, glabrous, sometimes slightly angular; anthers reduced, ± sessile at ovary base; ovary globose, 2–2.3 mm wide, densely greybrown tomentose, style 0.5 mm long
    Male
    Male flowers with androphore 2–3 mm long
    Female
    Female flowers with gynophore slightly tapered, 0.5–1 mm long, glabrous, sometimes slightly angular; anthers reduced, ± sessile at ovary base; ovary globose, 2–2.3 mm wide, densely greybrown tomentose, style 0.5 mm long
    Fruits
    Fruit known only from one old, fallen, seedless follicle, elliptic, 9.5 mm long, 7.5 mm wide, 1.5 mm thick, inner surface tomentose, stellate.
    Seeds
    Seed unknown.
    Ecology
    Coastal evergreen forest; 20–400 m
    Conservation
    Apparently restricted to the increasingly scanty scraps of undisturbed coastal rainforest of East Africa. In Kenya known only from four collections, all in Kwale District; in Tanzania known only from four collections, all but one in Lindi District. In Mozambique, known from a single collection. This species is here assessed as VU B2 a, b(iii), or vulnerable, due to being known from less than 10 locations, with an area of occupancy of less than 2,000 km2 and an inferred decline in its lowland moist forest habitat. Robertson & Luke 6315 (Gongoni Forest reserve): “Tree to 10 m which had been cut down for firewood by contractor (A Khan) to sell to Kenya Calcium Products, Waa”. www.redlist.org already lists S. schliebenii as vulnerable (VU D2, based on an assessment by Lovett & Clarke in 1996).
    Note
    The leaves of S. schliebenii closely resemble those of S. tragacantha, a widespread species in Guineo-Congolian Africa. Confusion sometimes occurs. S. tragacantha differs in flowering with the leaves and in having the tips of the perianth united at anthesis, it also has a rather more tomentose lower surface to the leaf-blade. Luke (pers. comm.) notes that S. schliebenii grows above 400 m alt. in Mozambique.
    Distribution
    Flora districts: K7 T6 T8 Range: Mozambique
    [FZ]

    Sterculiaceae, H. Wild. Flora Zambesiaca 1:2. 1961

    Habit
    Tree 10–16 m. tall; young branches glabrous, with greyish bark.
    Leaves
    Leaves collected at the ends of the stems; lamina up to 14 × 9·5 cm., entire, obovate-oblong, apex rounded or acuminate, base slightly cordate and 5–7-nerved, sparsely appressed-stellate-pubescent above, a little more densely so beneath, not discolorous; nerves and midrib prominent below, venation prominent and laxly reticulate; petiole c. 5 cm. long, thinly pubescent.
    Flowers
    Flowers appearing before the leaves in narrowly pyramidal panicles 4–8 cm. long at the ends of the branches; branches of inflorescence densely purple-tomentose. Female flower: ovary ovoid, tomentose, with a ring of vestigial anthers at its base, on a glabrous gynophore c. 0·5 mm. long; style 1 mm. long, tomentose; stigmas recurved. Male flower: stamens 10, in a capitate-globose cluster on a glabrous androphore c. 2 mm. long.
    Calyx
    Calyx 5–6 mm. long, campanulate, lobed to half-way or a little more into 5 deltoid reflexed lobes, with both pale and deep purple stellate hairs outside, inside densely pubescent with short simple somewhat stellate hairs mixed with subsessile glandular hairs.
    Male
    Male flower: stamens 10, in a capitate-globose cluster on a glabrous androphore c. 2 mm. long.
    Female
    Female flower: ovary ovoid, tomentose, with a ring of vestigial anthers at its base, on a glabrous gynophore c. 0·5 mm. long; style 1 mm. long, tomentose; stigmas recurved.
    Fruits
    Follicles c. 5, 2·5 × 2 cm., ovoid, tomentellous outside, scarcely apiculate, on stipes 2–3 mm. long.
    Seeds
    Seeds not seen.

    Distribution

    Native to:

    Kenya, Mozambique, Tanzania

    Sterculia schliebenii Mildbr. appears in other Kew resources:

    First published in Notizbl. Bot. Gart. Berlin-Dahlem 12: 519 (1935)

    Accepted by

    • Cheek, M. & Dorr, L. (2007). Flora of Tropical East Africa, Sterculiaceae: 1-134.
    • Exell, A.W. & Wild, H. (eds.) (1961). Flora Zambesiaca 1(2): 337-581. Royal Botanic Gardens, Kew.

    Literature

    Kew Backbone Distributions
    • Cheek, M. & Dorr, L. (2007). Flora of Tropical East Africa, Sterculiaceae: 1-134.
    • Exell, A.W. & Wild, H. (eds.) (1961). Flora Zambesiaca 1(2): 337-581. Royal Botanic Gardens, Kew.
    Flora of Tropical East Africa
    • K.T.S.L.: 168 (1994).
    • F.Z. 1: 557 (1961)
    • T.T.C.L.: 604 (1949)
    • N.B.G.B. 12: 519 (1935)

    Sources

    Flora Zambesiaca
    Flora Zambesiaca
    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

    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