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  1. Family: Euphorbiaceae Juss.
    1. Genus: Macaranga Thouars
      1. Macaranga conglomerata Brenan

        This species is accepted, and its native range is SE. Kenya, NE Tanzania.

    [FTEA]

    Euphorbiaceae, A. R.-Smith. Flora of Tropical East Africa. 1987

    Habit
    A tall tree up to 32 m. with a slender trunk ± 2 m. in circumference and a spreading crown, branching from a low level or from up to 9 m.
    Bark
    Bark grey, smooth, with horizontal lenticels ± 12 mm. long.
    Wood
    Wood white or pale brown.
    Shoots
    Young shoots, petioles and inflorescence-axes densely ferruginous tomentellous, later glabrescent.
    Leaves
    Petioles 1.5–11 cm. long, slightly pulvinate at the base; leaves held in a drooping position with the margins incurved; leaf-blades ovate, often broadly so, triangular-ovate or occasionally suborbicular-ovate, 4–17.5 cm. long, 2–13 cm. wide, acutely acuminate, entire, subentire or undulate and remotely and minutely denticulate, rounded, truncate, shallowly cordate, cordate or cordulate, peltate in saplings, not in mature trees, biglandular at the petiole-insertion, firmly chartaceous to thinly coriaceous, 7–9(–11)-nerved from the base, lateral nerves 9–13 pairs, not or scarcely prominent to slightly impressed above, prominent beneath, brochidodromous, tertiary nerves parallel or subparallel, ± concentric at the base, quaternary nerves also parallel, quinary nerves visible beneath on larger leaves, densely minutely uniformly yellowish-brown refringent-glan- dular-punctate beneath, uniformly ferruginous tomentellous above and beneath at first, later ferruginous puberulous only on the midrib and main nerves beneath, or else glabrescent, shiny above, not glaucous beneath.
    Stipules
    Stipules lanceolate to narrowly lanceolate, 8–13 mm. long, 2–3 mm. wide, acutely acuminate, entire, densely ferruginous tomentellous, subpersistent to caducous.
    Inflorescences
    Inflorescences axillary, solitary, long-pedunculate. Female inflorescences conglomerate, usually with a terminal congested pseudumbel 7–10 mm. diameter (up to 2 cm. diameter in fruit) and 1–2 smaller lateral glomerules just beneath it, 2–5 cm. long, the peduncles 1.5–4 cm. long; bracts resembling those of the ♂ inflorescences but fewer-flowered and soon caducous. Male inflorescences conglomerate, usually with a terminal capitate glomerule 5–7 mm. diameter, and 2–4 smaller lateral glomerules (3–4 mm. diameter) towards the top, 3–10(–13.5) cm. long, the peduncles 1–7(–9) cm. long; bracts foliaceous, strongly deflexed, ovate-lanceolate, 7–15(–20) mm. long, 4–5 mm. wide at the base, acutely acuminate, entire or sparingly glandular-denticulate, rounded, biglandular at the base, ± persistent, many-flowered.
    Male
    Male flowers sessile; calyx-lobes 3, broadly ovate, 0.5 mm. long, puberulous without, glabrous within, brownish green; stamens 3(–4), filaments ± united at the base, 1 mm. long, whitish, anthers obscurely 4-thecous, 0.5 mm. across, yellow. Male inflorescences conglomerate, usually with a terminal capitate glomerule 5–7 mm. diameter, and 2–4 smaller lateral glomerules (3–4 mm. diameter) towards the top, 3–10(–13.5) cm. long, the peduncles 1–7(–9) cm. long; bracts foliaceous, strongly deflexed, ovate-lanceolate, 7–15(–20) mm. long, 4–5 mm. wide at the base, acutely acuminate, entire or sparingly glandular-denticulate, rounded, biglandular at the base, ± persistent, many-flowered.
    Flowers
    Female flowers:pedicels 1–2 mm. long, extending to 5–7 mm. in fruit; calyx cupular, 1.5 mm. long, splitting into 3 subequal lobes and becoming flattened or slightly reflexed as the fruit matures, ferruginous tomentellous without, glabrous within; ovary 1–2-lobate, 1.5 mm. long, 1.5–2 mm. wide, densely yellowish granulate-glandular; styles 1–2, strongly recurved, united at the base when 2, 3 mm. long, adaxially densely fimbriate, abaxially puberulous. Male flowers sessile; calyx-lobes 3, broadly ovate, 0.5 mm. long, puberulous without, glabrous within, brownish green; stamens 3(–4), filaments ± united at the base, 1 mm. long, whitish, anthers obscurely 4-thecous, 0.5 mm. across, yellow.
    Female
    Female flowers:pedicels 1–2 mm. long, extending to 5–7 mm. in fruit; calyx cupular, 1.5 mm. long, splitting into 3 subequal lobes and becoming flattened or slightly reflexed as the fruit matures, ferruginous tomentellous without, glabrous within; ovary 1–2-lobate, 1.5 mm. long, 1.5–2 mm. wide, densely yellowish granulate-glandular; styles 1–2, strongly recurved, united at the base when 2, 3 mm. long, adaxially densely fimbriate, abaxially puberulous. Female inflorescences conglomerate, usually with a terminal congested pseudumbel 7–10 mm. diameter (up to 2 cm. diameter in fruit) and 1–2 smaller lateral glomerules just beneath it, 2–5 cm. long, the peduncles 1.5–4 cm. long; bracts resembling those of the ♂ inflorescences but fewer-flowered and soon caducous.
    Fruits
    Fruit obovoid-ellipsoid or bilobate, with persistent calyx and styles, 5–6 mm. long, 4–8 mm. diameter, densely granulate-glandular, greenish yellow; styles laterally displaced in the monococcous fruits.
    Seeds
    Seeds subglobose, 3–4 mm. diameter, smooth, shiny, dark purplish brown to blackish.
    Figures
    Fig. 49.
    Habitat
    Locally common in upland evergreen forest; 1400–2000 m.
    Distribution
    not known elsewhere K7 T3

    Images

    Distribution

    Native to:

    Kenya, Tanzania

    Other Data

    Macaranga conglomerata Brenan appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    May 10, 1947 Wigg, L.J. [541], Tanzania K000425826 Unknown type material
    Drummond, R.B. [4372], Kenya 5261.000
    Parry, M.S. [187], Tanzania K000238298
    Parry, M.S. [182], Tanzania K000238299
    Faden, R.B. [71247], Kenya K000238295
    Faden, R.B. [72200], Kenya K000238296
    Faden, R.B. [7118], Kenya K000238293
    Faden, R.B. [77318], Kenya K000238294
    Bryce, J.M. [112], Tanzania K000238300
    Bryce, J.M. [114], Tanzania K000238301
    Bryce, J.M. [115], Tanzania K000238302
    Semsei, S.R. [4209], Tanzania K000238297
    Semsei, S.R. [3494], Tanzania K000238303

    Bibliography

    First published in Kew Bull. 4: 94 (1949)

    Accepted by

    • Govaerts, R., Frodin, D.G. & Radcliffe-Smith, A. (2000). World Checklist and Bibliography of Euphorbiaceae (and Pandaceae) 1-4: 1-1622. The Board of Trustees of the Royal Botanic Gardens, Kew.

    Literature

    Flora of Tropical East Africa

    • Dale & Greenway, Kenya Trees and Shrubs p. 208 (1961).
    • Brenan in Kew Bulletin 4: 94 (1949)
    • J.P.M. Brenan, Check-lists of the Forest Trees and Shrubs of the British Empire no. 5, part II, Tanganyika Territory p. 217 (1949).

    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