Skip to main content
  1. Family: Euphorbiaceae Juss.
    1. Genus: Euphorbia L.
      1. Euphorbia grantii Oliv.

        This species is accepted, and its native range is Rwanda to Zambia.

    [FZ]

    Euphorbiaceae, S. Carter & L.C. Leach. Flora Zambesiaca 9:5. 2001

    Habit
    A few-stemmed bush or sparingly branched tree 1.5–9 m high, with a smooth but horizontally grooved grey bark; branches semi-succulent, with large prominent closely-set leaf scars.
    Leaves
    Leaves sessile, glabrous; stipules glandular, minute, deciduous; lamina to 30 × 3 cm, linear to linear-lanceolate, acuminate at the apex, rounded at the base, entire, midrib prominent on the lower surface, pale green and slightly glaucous.
    Inflorescences
    Cymes in terminal 3-branched umbels produced on a leafless peduncle to 10(15) cm long, with primary rays to 5(7) cm long, each forking up to 8 times, peduncle, rays and branches minutely puberulous.
    Bracts
    Bracts sessile, c. 4 × 4 cm when mature, deltoid, apex acuminate to c. 2 cm long, base subcordate, lower surface minutely puberulous at least towards the base, bracts below the umbel larger and longer.
    Cyathia
    Cyathia on peduncles to 1 cm long, c. 1 × 3 cm, with barrel-shaped involucres, all parts except the upper surface of the glands minutely puberulous; glands 4 spreading, c. 4 × 8 mm, transversely elliptic, outer margin with 6–10 finger-like processes c. 8 mm long, branching several times at the tips and terminating in minute knobs, the glands yellowish-green, with reddish processes; lobes c. 3 × 5 mm, rounded, margin sharply toothed, often with a longer central tooth to 1.5 mm long, densely puberulous on both surfaces.
    Male
    Male flowers: bracteoles many, fan-shaped, deeply divided, feathery at the apices; stamens 14.5 mm long.
    Flowers
    Female flower: perianth obvious below the ovary, irregularly and acutely lobed with lobes to 1.5 mm long; ovary minutely puberulous; styles 1 cm long, joined to nearly halfway, with shortly bifid thickened rugulose apices. Male flowers: bracteoles many, fan-shaped, deeply divided, feathery at the apices; stamens 14.5 mm long.
    Female
    Female flower: perianth obvious below the ovary, irregularly and acutely lobed with lobes to 1.5 mm long; ovary minutely puberulous; styles 1 cm long, joined to nearly halfway, with shortly bifid thickened rugulose apices.
    Fruits
    Fruit exserted on a curved pedicel to 1.5 cm long; capsule c. 13 × 17 mm, subglobose, glabrous when mature, tinged purplish.
    Seeds
    Seeds c. 6 × 5 mm, subglobose, slightly compressed laterally and obscurely 3-angled, surface minutely roughened, greyish-brown.
    [FTEA]

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

    Habit
    A few-stemmed bush or sparingly branched tree 1.5–9 m. high, with a smooth but horizontally grooved grey bark; branches semi-succulent, with large prominent closely-set leaf-scars.
    Leaves
    Leaves sessile, linear to linear-lanceolate, to 30 × 3 cm., base rounded, apex acuminate, margin entire, midrib prominent on the lower surface, lamina glabrous, pale green and slightly glaucous; stipules glandular, minute, deciduous.
    Inflorescences
    Cymes in terminal 3-branched umbels usually on a leafless peduncle to 10(–15) cm. long, with primary rays to 5(–7) cm. long, forking up to 8 times, peduncle, rays and branches minutely puberulous; bracts sessile, deltoid, ± 4 × 4 cm. when mature, base subcordate, apex acuminate to ± 2 cm. long, lower surface minutely puberulous at least towards the base; bracts below the umbels larger and longer.
    Cyathia
    Cyathia on peduncles to 1 cm. long, ± 1 × 3 cm., with barrel-shaped involucres, all parts except the upper surface of the glands minutely puberulous sometimes densely so; glands 4, spreading, transversely elliptic, ± 4 × 8 mm., outer margin lobed, with 6–10 finger-like processes ± 8 mm. long branching several times at the tips and terminating in minute knobs, the glands yellowish green becoming brown or sometimes purple, with red to purple processes having yellow to red tips; involucral lobes rounded, ± 3 × 5 mm., margin sharply toothed often with a longer central tooth to 1.5 mm. long, densely puberulous on both surfaces.
    Flowers
    Male flowers:bracteoles many, fan-shaped, deeply divided and densely ciliate at the apices; stamens 14.5 mm. long. Female flower:perianth obvious below the ovary, irregularly and acutely lobed with lobes to 1.5 mm. long; ovary minutely puberulous; styles 1 cm. long, joined for 4 mm., with shortly bifid thickened rugulose apices.
    Male
    Male flowers:bracteoles many, fan-shaped, deeply divided and densely ciliate at the apices; stamens 14.5 mm. long.
    Female
    Female flower:perianth obvious below the ovary, irregularly and acutely lobed with lobes to 1.5 mm. long; ovary minutely puberulous; styles 1 cm. long, joined for 4 mm., with shortly bifid thickened rugulose apices.
    Fruits
    Capsule exserted on a curved pedicel to 1.5 cm. long, subglobose, ± 13 × 17 mm., glabrous when mature, tinged purplish.
    Seeds
    Seed subglobose, slightly compressed laterally and obscurely 3-angled, ± 6 × 5 mm., greyish brown, with minutely roughened surface.
    Figures
    Fig. 85/1, 2, p. 458.
    Habitat
    On red sandy gritty soil often among rocks on hillsides, in open woodland; 800–1600 m.
    Distribution
    T1 T2 T4 T5 T6 T7 U2 U3 U4

    Images

    Distribution

    Native to:

    Burundi, Rwanda, Tanzania, Uganda, Zambia, Zaïre

    Synonyms

    Other Data

    Euphorbia grantii Oliv. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Bullock, A.A. [3921], Tanzania 8132.000
    Richards, H.M. [12511], Zambia 5220.000
    Richards, H.M. [25312], Tanzania 7463.000
    Tanner, R. [536], Tanzania 8131.000
    Bally [7861], Tanzania 47395.000
    Speke [s.n.], Tanzania K000252978 Unknown type material

    Bibliography

    First published in Trans. Linn. Soc. London 29: 144 (1875)

    Accepted by

    • Carter, S. (2008). Euphorbia in Tanzania Euphorbia World 4(2): 5-9.
    • 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

    • W.J. Eggeling, Indigenous Trees of the Uganda Protectorate, ed. 2: 127 (1952).
    • J.P.M. Brenan, Check-lists of the Forest Trees and Shrubs of the British Empire no. 5, part II, Tanganyika Territory p. 210 (1949).
    • N.E. Br. in Flora of Tropical Africa 6(1): 527 (1911), excl. Hildebrandt 2632.
    • Oliv. in Trans. Linn. Soc., Bot. 29: 144 (1875).

    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

    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