Skip to main content
  1. Family: Orchidaceae Juss.
    1. Genus: Disa P.J.Bergius
      1. Disa longilabris Schltr.

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

    [FTEA]

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

    Habit
    A terrestrial herb 1–3.5 dm. high, glabrous except for the roots.
    Tubers
    Tubers ellipsoid, ±1.5 cm. long and 1 cm. in diameter, densely tomentose.
    Stem
    Fertile stem slender, ± flexuous, with 5–8 sheaths which are overlapping below and distant above.
    Leaves
    Leaves in a bunch on the sterile stem, often surrounded by the dead bases of older leaves, 3–4, ± erect, narrowly linear, 17–20 cm. long, ± 1 mm. broad, very stiff.
    Inflorescences
    Inflorescence 2–9 cm. long, loosely to rather densely 2–10-flowered.
    Bracts
    Bracts chaffy, lanceolate, acuminate, 5–18 mm. long, shorter than the flowers.
    Flowers
    Flowers suberect, purplish; pedicel with ovary straight, ± 1 cm. long.
    Calyx
    Dorsal sepal erect, very convex, ovate from the front, spurred in the lower half, 10–17 mm. long, 8–13 mm. broad when spread out, from base to apex of spur 7.5–10 mm. long, the spur 3–5 mm. long, 1–2 mm. in diameter; laterals spreading downwards, narrowly oblong-elliptical, apiculate or subacute, 10–15 mm. long, 3–6.5 mm. broad.
    Corolla
    Petals erect, much curved forward above, with a rounded auricle at the base in front, the apical part widened and shortly 2-lobed, the lobes acute, altogether 6–9 mm. long and 1.5–3 mm. broad.
    Labellum
    Lip projecting forwards, ovate or elliptical in general outline, with a narrow central undivided portion, the remainder on each side divided into numerous slender, sometimes branched, threads, 11–13 mm. long and 7–12 mm. broad across the longest threads.
    Column
    Column short and broad; anther horizontal, ± 2 mm. long; stigma in front of the anther, ± orbicular, 1.5 mm. in diameter.
    Habitat
    Upland grassland; 2100–2700 m.
    Distribution
    T7 not known elsewhere
    [FZ]

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

    Habit
    Terrestrial herb 12–25 cm tall.
    Leaves
    Cauline leaves 5–7, closely sheathing, imbricate to lax, acuminate. Basal leaves numerous, produced after flowering, up to 30 cm long and 1–1.2 mm wide, subsclerophyllous.
    Inflorescences
    Inflorescence subdensely 4–18 flowered, 5–10 cm long.
    Bracts
    Bracts dry, not as long as the flowers, ovate, acuminate, dry.
    Flowers
    Flowers white to pale blue.
    Calyx
    Dorsal sepal galeate, galea erect, 5–7 mm tall, 4 mm wide and 4 mm deep, ovate, acute to acuminate. Lateral sepals patent, 6–9 mm long, narrowly oblong-ovate, acute.
    Spur
    Spur horizontal at the base, often somewhat downturned, 3–4 mm long, cylindrical.
    Corolla
    Petals with a small basal anticous lobe c. 1 mm in diameter; petal limb c. 5 × 1 mm, lorate in the lower part and curving up beside the anther within the galea, widened and acutely 2-lobed at the apex.
    Labellum
    Lip 8–10 mm long, lanceolate, deeply dissected.
    Anthers
    Anther horizontal, 1.5 mm long; viscidia separate.
    Rostellum
    Rostellum erect, 1–1.5 mm tall.
    Ovary
    Ovary straight or curved, 1–1.5 cm long.

    Images

    Distribution

    Native to:

    Malawi, Tanzania

    Synonyms

    Other Data

    Disa longilabris Schltr. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Williamson, G. [312], Zambia 34439.000
    Adeiheyser, E. [253], Tanzania Herschelianthe longilabris K000283013
    Adeiheyser, E. [252], Tanzania Herschelianthe longilabris K000283014
    Adeiheyser, E. [251], Tanzania Herschelianthe longilabris K000283015

    Bibliography

    First published in Bot. Jahrb. Syst. 38: 150 (1906)

    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).
    • Schltr. in A. Engler, Botanische Jahrbücher für Systematik, Pflanzengeschichte und Pflanzengeographie 38: 150 (1906).

    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

    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