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  1. Family: Euphorbiaceae Juss.
    1. Genus: Croton L.
      1. Croton dichogamus Pax

        This species is accepted, and its native range is Ethiopia to Mozambique.

    [FTEA]

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

    Habit
    A monoecious pyramidal or sometimes straggling shrub or small tree up to 7.5 m. tall, but more usually 2–5 m. tall, with symmetrical, frequent branching.
    Twigs
    Young twigs densely silvery or brown lepidote, later becoming greyish.
    Scales
    Peltate scales dissected or fimbriate.
    Leaves
    Petioles 0.5–2(–3) cm. long, silvery or brownish lepidote; leaf-blade ovate-lanceolate to elliptic-lanceolate, more rarely ± ovate, 2–12(–16) cm. long, 1–5(–7.5) cm. wide, usually acuminate, often acutely so, less often obtuse, rounded at the base, or sometimes subcuneate or truncate-subcordate, with basal glands subsessile or shortly stipitate, fairly prominent, entire, firmly membranous, lateral nerves 9–15 pairs, slightly prominent beneath, midrib impressed above, prominent beneath, glabrous and dark green above except for a strip of sparse, adpressed scurfy stellate hairs toward the margin when young, shiny silvery lepidote and sometimes brown flecked beneath.
    Stipules
    Stipules triangular-lanceolate, 1 mm. long, somewhat obscured by the scales, caducous.
    Buds
    Axillary buds not perulate.
    Inflorescences
    Racemes terminal, up to 6 cm. long, but more often 2–4 cm. long, ♀ in the lower third, ♂ in the upper two thirds, sometimes all ♂, occasionally mostly ♀, axis brown lepidote; bracts triangular-lanceolate, 1.5 mm. long, lepidote with fimbriate scales, ciliate.
    Flowers
    Male flowers:pedicels 3–5 mm. long, slender, yellow-brown lepidote, sometimes bibracteolate; sepals 5 or 6, broadly ovate, 2 mm. long, 2 mm. wide, obtuse, yellow-brown lepidote without, glabrous within, margin finely ciliate, pale yellow-green; petals 4 or 5, oblanceolate-oblong, 2 mm. long, 0.5 mm. wide, margin finely ciliate, otherwise glabrous; disc pentagonal; stamens (13–)15(–20), pale orange, filaments 2.5 mm. long, glabrous above, pubescent below, anthers 0.5 mm. long; receptacle pilose. Female flowers:pedi- cels 2–4 mm. long, stouter than in the ♂, yellow-brown lepidote; sepals as in the ♂; petals 0 or, if present (5 or fewer), then linear, not more than 0.5 mm. long, ciliate and readily caducous; disc annular; ovary 3(–4)-lobed, 2 mm. diameter, densely brown lepidote; styles 3, spreading, 2 mm. long, glabrous, deeply bipartite.
    Male
    Male flowers:pedicels 3–5 mm. long, slender, yellow-brown lepidote, sometimes bibracteolate; sepals 5 or 6, broadly ovate, 2 mm. long, 2 mm. wide, obtuse, yellow-brown lepidote without, glabrous within, margin finely ciliate, pale yellow-green; petals 4 or 5, oblanceolate-oblong, 2 mm. long, 0.5 mm. wide, margin finely ciliate, otherwise glabrous; disc pentagonal; stamens (13–)15(–20), pale orange, filaments 2.5 mm. long, glabrous above, pubescent below, anthers 0.5 mm. long; receptacle pilose.
    Female
    Female flowers:pedi- cels 2–4 mm. long, stouter than in the ♂, yellow-brown lepidote; sepals as in the ♂; petals 0 or, if present (5 or fewer), then linear, not more than 0.5 mm. long, ciliate and readily caducous; disc annular; ovary 3(–4)-lobed, 2 mm. diameter, densely brown lepidote; styles 3, spreading, 2 mm. long, glabrous, deeply bipartite.
    Fruits
    Fruit 3(–4)-lobed, often somewhat parallel-sided, 6–7 mm. long, 6–7 mm. diameter, septicidal, evenly brown lepidote.
    Seeds
    Seeds oblong-ovoid, 5 mm. long, 3 mm. wide, brown, with a convex caruncle 1.5 mm. wide.
    Figures
    Fig. 25.
    Habitat
    Dry forest, bushland and thicket, on rocky ground, lava and porous soils; 550–2000 m.
    Distribution
    K1 K2 K3 K4 K5 K6 K7 T1 T2 T3 T5 T6 U3

    Images

    Distribution

    Native to:

    Ethiopia, Kenya, Mozambique, Rwanda, Tanzania, Uganda

    Other Data

    Croton dichogamus Pax appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Scheffler, G. [1], Kenya K000347457 Unknown type material

    Bibliography

    First published in Bot. Jahrb. Syst. 43: 78 (1909)

    Accepted by

    • Calane da Silva, M., Izdine, S. & Amuse, A.B. (2004). A Preliminary Checklist of the Vascular Plants of Mozambique: 1-184. SABONET, Pretoria.
    • 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.
    • Govaerts, R. (1999). World Checklist of Seed Plants 3(1, 2a & 2b): 1-1532. MIM, Deurne.

    Literature

    Kew Backbone Distributions

    • Calane da Silva, M., Izdine, S. & Amuse, A.B. (2004). A Preliminary Checklist of the Vascular Plants of Mozambique: 1-184. SABONET, Pretoria.

    Flora of Tropical East Africa

    • Troupin, Fl. Rwanda 2: 216, t. 65/3 (1983).
    • Troupin, Fl. Pl. Lign. Rwanda: 256, t. 88. 3 (1982)
    • J. Léon. in Flore du Congo Belge et du Ruanda-Urundi, 8(1): 62 (1962).
    • Dale & Greenway, Kenya Trees and Shrubs p. 189 (1961).
    • W.J. Eggeling, Indigenous Trees of the Uganda Protectorate, ed. 2: 120 (1952).
    • J.P.M. Brenan, Check-lists of the Forest Trees and Shrubs of the British Empire no. 5, part II, Tanganyika Territory p. 204 (1949).
    • Battiscombe & Dale, Trees and Shrubs of Kenya Colony p. 50 (1936).
    • A. Engler & O. Drude, Die Vegetation Der Erde, IX, Pflanzenwelt Afrikas 3(2): 47 (1921).
    • Hutch. in Flora of Tropical Africa 6(1): 753 (1912).
    • Pax in A. Engler, Botanische Jahrbücher für Systematik, Pflanzengeschichte und Pflanzengeographie 43: 78 (1909).

    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