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  1. Family: Orchidaceae Juss.
    1. Genus: Disa P.J.Bergius
      1. Disa similis Summerh.

        This species is accepted, and its native range is S. Tropical Africa, SE. Cape Prov. to E. KwaZulu-Natal.

    [FZ]

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

    Habit
    Erect terrestrial herb, 25–50 cm tall, slender, perennating by tubers.
    Leaves
    Leaves lax to imbricate, 3–8, lower leaves to 12 cm long, upper leaves to 1.5 cm long, lanceolate, acute.
    Inflorescences
    Inflorescence lax, 7–18 cm long, 10–30-flowered.
    Bracts
    Floral bracts narrowly ovate, acuminate, about as long as ovary.
    Flowers
    Flowers borne horizontally, pale violet, blue or mauve, the lip with a yellow apex.
    Spur
    Spur c. 3 mm long, conical, subacute, laterally flattened, straight.
    Calyx
    Lateral sepals 7–9 mm long, oblong to obovate, acute to rounded, patent. Dorsal sepal erect, rotund, rounded, forming a galea 7–9 mm tall, 5.5–9 mm wide and c. 3 mm deep.
    Corolla
    Petals erect, 3.5–4.5 mm long, obliquely oblong, truncate or rounded, with a 1–2 mm high basal anticuous lobe flanking the anther.
    Labellum
    Lip 3.5–4.5 mm long, oblong, rounded, with two side lobes at the base curved up over the stigma.
    Rostellum
    Rostellum erect, fused to the petals by keels almost as tall as the lateral lobes, c. 2 mm tall, central lobe obsolete.
    Anthers
    Anther to 2 mm long.
    Stigma
    Stigma flat, tripulvinate, almost square, shortly stipitate.
    Ovary
    Ovary twisted, 10–13 mm long.

    Images

    Distribution

    Native to:

    Angola, Cape Provinces, KwaZulu-Natal, Zambia

    Other Data

    Disa similis Summerh. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Jan 1, 1964 Milne-Redhead, E. [2780], Zambia K000077522 holotype
    Holmes, W.D. [02], Zambia 1822.000
    Milne-Redhead, E. [2780], Zambia 24687.000
    Robinson, E.A. [4143] 31198.000
    Williamson, G. [646], Zambia 33143.000
    Williamson, G. [537], Zambia 33170.000
    Williamson, G. [113], Zambia 6049.370

    Bibliography

    First published in Kew Bull. 17: 552 (1964)

    Accepted by

    • Johnson, S. & Bytebier, B. (2015). Orchids of South Africa. A field guide: 1-536. Struik nature, Cape Town, South Africa.
    • Govaerts, R. (2003). World Checklist of Monocotyledons Database in ACCESS: 1-71827. The Board of Trustees of the Royal Botanic Gardens, Kew.

    Literature

    Kew Backbone Distributions

    • Johnson, S. & Bytebier, B. (2015). Orchids of South Africa. A field guide: 1-536. Struik nature, Cape Town, South Africa.

    Sources

    Flora Zambesiaca
    Flora Zambesiaca
    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