1. Family: Euphorbiaceae Juss.
    1. Genus: Acalypha L.
      1. Acalypha ambigua Pax

        This species is accepted, and its native range is Burundi to Namibia.

    [FTEA]

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

    Habit
    A simple or sparingly-branched perennial herb up to 40 cm., arising from a woody rootstock.
    Stem
    Stems sparingly puberulous or subglabrous.
    Leaves
    Leaves subsessile; leaf-blade linear to narrowly linear-oblanceolate, 3–7.5 cm. long, 4–7 mm. wide, acute or subacute, attentuate at the base, somewhat serrulate toward the apex, otherwise ± entire, chartaceous-subcoriaceous, lateral nerves 5–6 pairs, ascending, fairly prominent above and beneath, sparingly pubescent on the midrib and nerves beneath, otherwise ± glabrous.
    Stipules
    Stipules linear-subulate, 1.5–2.5 mm. long, with 1–2 subsessile glands on the margin, sparingly pubescent.
    Inflorescences
    Inflorescences uni- or bisexual, usually axillary, up to 4 cm. long, generally consisting of a ♂ spike with 1–2 ♀ flowers at the base; axis crisped-puberulous.
    Flowers
    Male flowers very shortly pedicellate or subsessile; buds 4-lobate, subglobose, subglabrous. Female flowers sessile; sepals 3–4, ovate-lanceolate, 1 mm. long, ciliate, pubescent without, glabrous within; ovary trilobate, 1 mm. diameter, pubescent except at the base; styles free, up to 1 cm. long, pectinate, red.
    Male
    Male flowers very shortly pedicellate or subsessile; buds 4-lobate, subglobose, subglabrous. Male bracts resembling the stipules.
    Bracts
    Female bracts cupular, accrescent, multifid, the segments linear, 3–4 mm. long, sparingly pubescent, eglandular or with 1–2 subsessile glands toward the apex, 1-flowered. Male bracts resembling the stipules.
    Female
    Female bracts cupular, accrescent, multifid, the segments linear, 3–4 mm. long, sparingly pubescent, eglandular or with 1–2 subsessile glands toward the apex, 1-flowered. Female flowers sessile; sepals 3–4, ovate-lanceolate, 1 mm. long, ciliate, pubescent without, glabrous within; ovary trilobate, 1 mm. diameter, pubescent except at the base; styles free, up to 1 cm. long, pectinate, red.
    Fruits
    Fruits trilobate, 2.5 mm. long, 3.5 mm. diameter, evenly to densely pubescent.
    Seeds
    Seeds ovoid-subglobose, 2.2 mm. long, 1.8 mm. wide, smooth, grey, with a flattened, elliptical caruncle running from the raphe to the apex.
    Habitat
    Brachystegia woodland; 900–1400 m.
    Distribution
    T4 T7
    [FZ]

    Euphorbiaceae, A. Radcliffe-Smith. Flora Zambesiaca 9:4. 1996

    Habit
    An erect caespitose perennial herb up to 50 cm high, arising from a stout woody rootstock; stems several, simple or sparingly branched, pubescent.
    Petiole
    Petioles 1 mm long, or leaves subsessile.
    Leaf lamina
    Leaf blades 3–9 × 0.3–1.5 cm, linear to linear-lanceolate or linear-oblanceolate, acute or subacute at the apex, with margins toothed in the upper half, otherwise ± entire, attenuate at the base, firmly chartaceous, sparingly pubescent above and beneath, bright green; lateral nerves in 5–6 pairs, ascending, fairly prominent beneath.
    Stipules
    Stipules 2–3 mm long, linear-subulate.
    Inflorescences
    Inflorescences up to 9 cm long, axillary, unisexual or bisexual, if the latter then consisting of a male spike with 1–2 female flowers at the base, otherwise spikes all male and many-flowered or all female and 1–few-flowered; male bracts resembling the stipules; female bracts accrescent to up to 5–6 × 8 mm, suborbicular, almost cupular, irregularly 13–19-fid almost to halfway, the segments linear to lanceolate, pubescent, 1-flowered.
    Male
    Male flowers very shortly pedicellate to subsessile; buds 4-lobed to subglobose, sparingly puberulous, creamy-yellow, sometimes pinkish- or reddish-tinged; anthers red.
    Flowers
    Female flowers sessile; sepals 3–4, 1 mm long, ovate to ovate-lanceolate, acute, ciliate; ovary 1 mm in diameter, 3-lobed, sericeous-pubescent, green; styles up to c. 1 cm long, free, pectinately laciniate, crimson. Male flowers very shortly pedicellate to subsessile; buds 4-lobed to subglobose, sparingly puberulous, creamy-yellow, sometimes pinkish- or reddish-tinged; anthers red.
    Female
    Female flowers sessile; sepals 3–4, 1 mm long, ovate to ovate-lanceolate, acute, ciliate; ovary 1 mm in diameter, 3-lobed, sericeous-pubescent, green; styles up to c. 1 cm long, free, pectinately laciniate, crimson.
    Fruits
    Fruits 3–4 × 4–5 mm, 3-lobed, sericeous-pubescent.
    Seeds
    Seeds 2–2.5 × 1.7–2 mm, ovoid-subglobose, smooth, grey, with a flattened elliptical caruncle.

    Distribution

    Native to:

    Angola, Burundi, Namibia, Tanzania, Zambia, Zaïre, Zimbabwe

    Acalypha ambigua Pax appears in other Kew resources:

    First published in Bot. Jahrb. Syst. 19: 96 (1894)

    Accepted by

    • Figueiredo, E. & Smith, G.F. (2008). Plants of Angola Strelitzia 22: 1-279. National Botanical Institute, 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. (1995). World Checklist of Seed Plants 1(1, 2): 1-483, 1-529. MIM, Deurne.

    Literature

    Flora of Tropical East Africa
    • Pax in A. Engler, Das Pflanzenreich IV. 147(16): 73 (1924).
    • A. Engler & O. Drude, Die Vegetation Der Erde, IX, Pflanzenwelt Afrikas 3(2): 96 (1921).
    • Hutch. in Flora of Tropical Africa 6(1): 906 (1912).
    • Pax in A. Engler, Botanische Jahrbücher für Systematik, Pflanzengeschichte und Pflanzengeographie 19: 96 (1894).

    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