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

[FTEA]

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

Morphology General 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.
Morphology General Bark
Bark grey, smooth, with horizontal lenticels ± 12 mm. long.
Morphology General Wood
Wood white or pale brown.
Morphology General Shoots
Young shoots, petioles and inflorescence-axes densely ferruginous tomentellous, later glabrescent.
Morphology 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.
Morphology Leaves Stipules
Stipules lanceolate to narrowly lanceolate, 8–13 mm. long, 2–3 mm. wide, acutely acuminate, entire, densely ferruginous tomentellous, subpersistent to caducous.
Morphology Reproductive morphology 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.
sex 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.
Morphology Reproductive morphology 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.
sex 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.
Morphology Reproductive morphology 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.
Morphology Reproductive morphology 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

Native to:

Kenya, Tanzania

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

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).

Flora of Tropical East Africa
Flora of Tropical East Africa
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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.
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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