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  1. Family: Orchidaceae Juss.
    1. Genus: Disa P.J.Bergius
      1. Disa walteri Schltr.

        This species is accepted, and its native range is SW. Tanzania.

    [FTEA]

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

    Habit
    A terrestrial herb 2–5 dm. high, glabrous except for the roots.
    Tubers
    Tubers ellipsoid, ± 2 cm. long and 1.5 cm. in diameter, sparsely pubescent or tomentose.
    Roots
    Roots flexuous, slender, sparsely pubescent.
    Stem
    Fertile stem slender, somewhat flexuous, with several distant lanceolate acuminate sheaths.
    Leaves
    Leaves in a tuft on the sterile stem, 5–7, suberect, rather flexuous, narrowly linear, stiff, 17–24 cm. long, 1–3 mm. broad, with several very prominent veins and thickened margins; the vascular bundles of the old leaves remain as fibres.
    Inflorescences
    Inflorescence up to 6 cm. long, rather closely 1–9-flowered; bracts narrowly lanceolate, acuminate, 14–18 mm. long, longer than or equalling the pedicel with ovary.
    Flowers
    Flowers suberect, pink, madder-red or crimson, sometimes with a dark red spot at the base of the lip; pedicel with ovary almost straight, 11–14 mm. long.
    Calyx
    Dorsal sepal erect, hemispherical and very convex, almost orbicular from the front, without any distinct dorsal spur, 8–14 mm. long, 10–16 mm. broad, shortly apiculate; laterals spreading downwards, narrowly elliptical-oblong, obtuse, ± 1 cm. long and 5 mm. broad.
    Corolla
    Petals erect, inside the hood of the dorsal sepal, broadened and cordate at the base on the front margin, the upper part much curved forward and acute, somewhat widened above, ± 7 mm. long and 2 mm. broad.
    Labellum
    Lip projecting forwards, cuneate and entire at the base, ± obscurely 3-lobed below the middle, the margins of the lobes divided into numerous slender threads, altogether 2–2.5 cm. long and up to 12 mm. broad.
    Column
    Column very short; anther horizontal, ± 7.5 mm. long, viscidia of the pollinia 2, distinct; stigma in front of the anther, cushion-like, ± 2.5 mm. in diameter, rostellum 3-lobed, all the lobes linear, erect.
    Habitat
    Damp upland grassland and rock-clefts; 2200–2800 m.
    Distribution
    T7 not known elsewhere

    Distribution

    Native to:

    Tanzania

    Synonyms

    Other Data

    Disa walteri Schltr. appears in other Kew resources:

    Bibliography

    First published in Bot. Jahrb. Syst. 53: 544 (1915)

    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

    • Schltr. in A. Engler, Botanische Jahrbücher für Systematik, Pflanzengeschichte und Pflanzengeographie 53: 544 (1915), in obs.

    Sources

    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