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  1. Family: Orchidaceae Juss.
    1. Genus: Disperis Sw.
      1. Disperis katangensis Summerh.

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

    [FZ]

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

    Habit
    Terrestrial herb 5–20 cm tall; stem greenish above, beetroot-coloured towards the base; tuber c. 1 cm long, globose.
    Leaves
    Leaves 2, alternate, 1–3 × 0.8–2 cm, ovate, cordate at the base, deep dull green with whitish veins on upper surface, deep purple below.
    Inflorescences
    Inflorescence 1–5-flowered.
    Flowers
    Flowers pale mauve with yellow and purple marks inside hood; lip yellow with white claw and appendages.
    Ovary
    Ovary 10–13 mm long.
    Bracts
    Bracts leaf-like, 6–20 mm long.
    Calyx
    Dorsal sepal 7–17 mm long, linear, adnate to petals to form an open hood 7–15 mm long, 5.5–11 mm deep and 8–18 mm wide across mouth. Lateral sepals 9–15 × 6–11 mm, obliquely elliptic, apiculate, joined for quarter to one third of their length, each with a sac-like spur up to 0.5 mm long.
    Corolla
    Petals 7–17 × 7–11 mm, elliptic.
    Labellum
    Lip 7.5–10 mm long, the claw sharply bent back near the base and then dilated into an appendage; appendage densely papillate, reniform and emarginate or deeply 2-lobed; the claw ending in a spathulate, elliptic or almost circular limb with a papillate crest.
    [FTEA]

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

    Habit
    Glabrous herb, 5.5–14 cm. tall, arising from a hairy ellipsoid tuber 0.5- 2 cm. long, 5–8 mm. wide.
    Leaves
    Leaves 2–3(–4), alternate or rarely the lowest pair subopposite (but at least 1–2 leaves always distant), sessile, sheathing at the base, ovate or rounded-ovate, 0.9–2 cm. long, 0.7–1.8 cm. wide, acuminate or shortly apiculate at the apex, cordate and clasping the stem above the sheath, mostly purplish beneath, the venation mostly whitish.
    Flowers
    Flowers solitary or in 2–4-flowered racemes, white to pinkish-mauve or purplish; bracts leaf-like, elliptic, 0.5–2 cm. long, 0.5–1.1 cm. wide, obtuse or acute.
    Calyx
    Intermediate sepal linear, (0.7-)l.6-l.8 cm. long, joined to the petals to form an open but deeply concave, transversely boat-shaped or sometimes almost hemispherical hood, 0.7–1.5 cm. long, 0.8–1.8 cm. wide (not opened out flat), mostly pinkish or greenish with mauve lines and often a yellow pattern at the back; lateral sepals elliptic or almost semicircular, 0.85–1.7 cm. long, 5.5–10 mm. wide, obliquely apiculate at the apex, joined for about a quarter to a third of their length, bearing small sacs 0.3–0.5 mm. long.
    Corolla
    Petals oblong-elliptic, ovate or semicircular, narrowed at both ends, 0.7–1.7 cm. long, 0.7–1.1 cm. wide.
    Labellum
    Lip mostly yellowish, ± 7.5–10 mm. long, with claw sharply bent back on itself near base and there dilated into a densely papillate appendage, which is typically large, reniform and apically emarginate, 2.5–3.5 mm. long, 4 mm. wide, but varying to deeply 2-lobed; claw terminating in a spathulate, elliptic or almost circular limb bearing a papillate crest or spur.
    Figures
    Fig. 39/1, p. 220.

    Images

    Distribution

    Native to:

    Angola, Tanzania, Zambia, Zaïre

    Accepted Infraspecifics

    Other Data

    Disperis katangensis Summerh. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Holmes, W.D. [0187], Zambia 18550.000
    Milne-Redhead, E. [3699], Zambia 23133.000
    Richards, H.M. [4232], Zambia 21085.000
    Richards, H.M. [10841], Zambia 21083.000
    Richards, H.M. [12051], Zambia 21084.000
    Richards, H.M. [10699], Zambia 9428.000
    Milne-Redhead, E. [3540], Zambia K000306666 holotype
    Brummitt [13809], Zambia 36488.000
    Von Hirschberg, C.W. [168], Congo, DRC K000306667 Unknown type material

    Bibliography

    First published in Bull. Misc. Inform. Kew 1931: 384 (1931)

    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

    • Summerh. in Hook., Ic. Pl. 33, t. 3271 (1935).
    • Summerh. in Bulletin of Miscellaneous Information, Kew 1931: 384 (1931)

    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