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  1. Family: Orchidaceae Juss.
    1. Genus: Roeperocharis Rchb.f.
      1. Roeperocharis wentzeliana Kraenzl.

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

    [FZ]

    Orchidaceae, I. la Croix and P.J. Cribb. Flora Zambesiaca 11:1. 1995

    Habit
    Terrestrial herb 30–85 cm tall; tubers up to 2 cm long, ellipsoid.
    Stem
    Stem leafy; leaves up to 10, the 2 lowermost sheathing, the rest erect, up to 14.5 × 4 cm, lanceolate or linear-lanceolate, acute, ribbed.
    Inflorescences
    Inflorescence 5–17 × 2–3 cm, densely many-flowered.
    Flowers
    Flowers green.
    Pedicel and Ovary
    Ovary and pedicel 8–10 mm long.
    Bracts
    Bracts leafy, c. 20 mm long, longer than the flower.
    Calyx
    Dorsal sepal erect, 6.5–10 × 3.5–5 mm, ovate, acute; lateral sepals spreading or reflexed, 8–10 × 4–5 mm, curved upwards, obliquely lanceolate, acuminate.
    Corolla
    Petals erect, 7.5–11 × 3–4 mm, fleshy, obliquely oblong, twisted and folded in the middle, the upper part serrated, the apex indistinct.
    Labellum
    Lip 3-lobed; basal undivided part c. 3 mm long; mid-lobe 9.5–12 × 1–1.5 mm, linear, obtuse; side lobes 1.5–4.5 × 0.5 mm, narrowly linear; spur pendent, 4–7 mm, slightly bifid at apex.
    Column
    Column 2–2.5 mm long; anther connective 3–4 mm wide, papillose; loculi diverging, 2–3 mm long, canals 1.5–2 mm long.
    Stigma
    Stigmatic arms papillose, 2-lobed from the base; upper lobe 1.5–3.5 mm long; lower lobe 3–3.5 mm long.
    [FTEA]

    Orchidaceae, V. S. Summerhayes. Flora of Tropical East Africa. 1968

    Habit
    A terrestrial herb 2–7 dm. high, almost entirely glabrous.
    Tubers
    Tubers ellipsoid or cylindrical, 1–1.5 cm. long, 4–12 mm. in diameter, glabrous or very sparsely pubescent.
    Stem
    Stem erect, slender to rather stout, up to 7 mm. in diameter at the base, leafy throughout its length, terete.
    Leaves
    Leaves 6–10; 1 or 2 lowermost reduced to sheaths, remainder almost erect, linear or lanceolate-linear, acute, the largest 7–23 cm. long and 0.5–2 cm. broad, decreasing in size up the stem, the uppermost similar to the bracts.
    Inflorescences
    Inflorescence narrow, 3–24 cm. long, 1.5–2.5 cm. in diameter, densely 4-many-flowered.
    Bracts
    Bracts adpressed to the ovary, lanceolate, acute, 0.7–3.5 cm. long, often longer than the pedicel with ovary.
    Flowers
    Flowers suberect, green or yellow-green; pedicel with ovary nearly straight, 7–11 mm. long.
    Calyx
    Dorsal sepal erect, convex, lanceolate, acute, 6.5–9 mm. long, 3.5–5 mm. broad; laterals spreading, curved upwards, very obliquely lanceolate with the lower margin much rounded, acuminate, 8–10 mm. long, ± 4.5 mm. broad; all sepals 3–5-nerved.
    Corolla
    Petals erect, very oblique, fleshy, irregularly and very obliquely oblong, twisted in the middle and often folded over in the upper part, this part with very irregular toothed or crenate margins and often wider than the lower part, altogether 7.5–11 mm. long, 2.5–4 mm. broad, apex not well defined.
    Labellum
    Lip dependent, 3-lobed; undivided basal part oblong, ± 3 mm. long; middle lobe linear, obtuse, 9.5–12 mm. long, 1–1.5 mm. broad; side lobes divergent, narrowly linear, 1.5–4.5 mm. long, ± 0.5 mm. broad.
    Spur
    Spur dependent, cylindrical, ± bilobulate at apex, 5–7 mm. long.
    Column
    Column ± 2–2.5 mm. high; anther-connective 3–4 mm. broad, papillose, loculi diverging, 2–3 mm. long, canals very short, auricles elliptical-quadrate.
    Stigma
    Stigmas bilobed from the base, papillose, the lower lobe just over 3 mm. long, upper lobe ± 2 mm. long, often projecting above the connective; rostellum side lobes spreading, tapering, the middle lobe very broad, ± emarginate.
    Habitat
    In swamps and on rough ground; 1650–2700 m.
    Distribution
    T3 T7

    Distribution

    Native to:

    Malawi, Tanzania, Zambia, Zaïre

    Other Data

    Roeperocharis wentzeliana Kraenzl. appears in other Kew resources:

    Bibliography

    First published in Bot. Jahrb. Syst. 30: 283 (1901)

    Accepted by

    • Govaerts, R. (2003). World Checklist of Monocotyledons Database in ACCESS: 1-71827. The Board of Trustees of the Royal Botanic Gardens, Kew.

    Literature

    Flora of Tropical East Africa

    • Kraenzl. in A. Engler, Botanische Jahrbücher für Systematik, Pflanzengeschichte und Pflanzengeographie 30: 283 (1901).

    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 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