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  1. Family: Orchidaceae Juss.
    1. Genus: Disa P.J.Bergius
      1. Disa stairsii Kraenzl.

        This species is accepted, and its native range is Congo to E. Tropical Africa.

    [FTEA]

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

    Habit
    A terrestrial or rarely epiphytic herb 1.5–8 dm. high, glabrous except for the roots.
    Tubers
    Tubers nil.
    Roots
    Roots numerous, slender, pubescent.
    Stem
    Stem erect, slender to robust, up to 1.5 cm. in diameter at the base, leafy throughout its length.
    Leaves
    Leaves 11–15, the lowermost 1 or 2 short, reduced to sheaths, the intermediate ones either forming a tuft at the base or spread out along the lower half of the stem, suberect, spreading or ± recurved, ligulate, ligulate-lanceolate or narrowly lanceolate, acute, the largest 45 cm. long, 1–4 cm. broad, often with reddish-brown tips, the 3–5 uppermost much smaller, adpressed to the stem, similar to the bracts.
    Inflorescences
    Inflorescence cylindrical, 6–32 cm. long, 3–5.5 cm. in diameter, rather laxly to very densely 10- to many-flowered.
    Bracts
    Bracts leafy, lanceolate, acuminate, purplish, 2–6 cm. long, the lower ones, and sometimes all of them, overtopping the flowers.
    Flowers
    Flowers suberect, pink to wine-red or purple; pedicel with ovary straight, 1.5- 2.5 cm. long.
    Calyx
    Dorsal sepal erect, very convex and hooded, almost orbicular, spurred below the middle, 8–12 mm. long, 11–15 mm. broad when spread out, the spur curved down or pendulous from a horizontal basal part, narrowly cylindrical, 1.5–2 cm. long; laterals spreading, obliquely elliptical, obtuse, ± the same length as the dorsal, 5–7.5 mm. broad.
    Corolla
    Petals erect, inside the hood of the dorsal sepal, curved, elliptical, oblong or lanceolate-oblong, obtuse or subacute, 5–7.5 mm. long, 2–3 mm. broad.
    Labellum
    Lip pendulous, ligulate or subspathulate-ligulate, rounded at apex, 8–10 mm. long, 2–3 mm. broad.
    Anthers
    Anther nearly horizontal, shortly stalked, the loculi 2.5 mm. long.
    Stigma
    Stigma in front of anther, orbicular, ± 2 mm. in diameter.
    Habitat
    At upper limit of bamboo or Hagenia zone, in grassy swamps, upland moor among Philippia, etc. or on rocky and stony areas among Alchemilla, etc.; 2100–3750 m.
    Distribution
    K3 K4 T2 T6 U2 U3

    Images

    Distribution

    Native to:

    Congo, Kenya, Rwanda, Tanzania, Uganda, Zaïre

    Synonyms

    Other Data

    Disa stairsii Kraenzl. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Dec 20, 1962 Rolfe, R. A. [s.n.], Kenya K000077558 holotype
    Kenya 7421.000
    Ball, J.S. [770], Uganda 20918.000
    Tweedie, E.M. [1807A], Kenya 25239.000
    Germain, R. [1094], Congo, DRC 20919.000
    Germain, R. [3745], Congo, DRC 20920.000
    Uganda 19422.000
    Jannerup, P.L. [0414], Tanzania 71165.000
    Volkens, G. [1893], Tanzania K000077557 isotype

    Bibliography

    First published in Gard. Chron., ser. 3, 12: 728 (1892)

    Accepted by

    • Sita, P. & Moutsambote, J.-M. (2005). Catalogue des plantes vasculaires du Congo, ed. sept. 2005: 1-158. ORSTOM, Centre de Brazzaville.
    • 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

    • Sita, P. & Moutsambote, J.-M. (2005). Catalogue des plantes vasculaires du Congo, ed. sept. 2005: 1-158. ORSTOM, Centre de Brazzaville.

    Flora of Tropical East Africa

    • Summerh. in Kew Bulletin 17: 547 (1964).
    • Tweedie in Journ. E.A. Nat. Hist. Soc. 24: 33 (1964).
    • Piers, Orch. E. Afr.: 40 (1959).
    • O. Hedberg, Afroalpine Vascular Plants p. 71 (1957).
    • Robyns & Tournay, Flore des Spermatophytes du Parc National Albert. 3: 442, t. 62, fig. 27 (1955).
    • Piers, E. Afr. Orch.: 86, fig. 48 (1951).
    • Schltr. in Wiss. Ergebn. Schwed. Rhod.-Kongo-Exped. 1911–12, 1: 243 (1916).
    • Kraenzl. in Wissenschaftliche Ergebnisse der Deutschen Zentral-Afrika-Expedition 1907-1908, 2 (Botanik) p. 72 (1910).
    • Schltr. in A. Engler, Botanische Jahrbücher für Systematik, Pflanzengeschichte und Pflanzengeographie 31: 239 (1901).
    • Kraenzl., Orch. Gen. et Sp. 1: 755 (1899).
    • N.E. Br. in Flora of Tropical Africa 7: 281 (1898).
    • Kraenzl. in Gard. Chron., ser. 3, 12: 728 (1892).

    Sources

    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