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  1. Family: Orchidaceae Juss.
    1. Genus: Disa P.J.Bergius
      1. Disa baurii Bolus

        This species is accepted, and its native range is Tanzania to E. Cape Prov.

    [FTEA]

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

    Habit
    A terrestrial herb 1.5–6 dm. high, glabrous except for the roots.
    Tubers
    Tubers ellipsoid-fusiform, ± 6–7 cm. long and 3 cm. in diameter, densely tomentose.
    Roots
    Roots slender, flexuous, pubescent.
    Stem
    Fertile stem erect, slender, with 5–10 sheaths, the lower ones overlapping, the upper distant, lanceolate, acuminate, similar to the bracts.
    Leaves
    Leaves 3–6 in a tuft on the sterile stem, their bases often covered by the remains of the previous year’s leaves, ± erect, narrowly linear, 1.5–4 dm. long, 1–2 mm. broad, very stiff with prominent nerves.
    Inflorescences
    Inflorescence up to 12 cm. long, 3–5.5 cm. in diameter, rather loosely 1–11-flowered.
    Bracts
    Bracts chaffy, lanceolate or broadly lanceolate, acute, 7–17 mm. long, much shorter than the flowers.
    Flowers
    Flowers suberect or half-spreading, pale to deep blue, rarely white; pedicel with ovary straight, 9–17 mm. long.
    Calyx
    Dorsal sepal sloping forwards, very convex and hooded, broadly ovate or almost orbicular from the front, shortly spurred in the lower half, 1.2–2.1 cm. long and a little broader when spread out, from base to apex of spur 8.5- 17 mm. long, the spur itself straight or slightly upcurved, ± 5 mm. long, 2.5–3 mm. in diameter; laterals spreading downwards, oblong-elliptical, apiculate, 1–1.6 cm. long, 5.5–10 mm. broad.
    Corolla
    Petals inside the hood of the dorsal sepal, erect in the lower part, the upper part curved forwards, with a broad rounded basal auricle, the apex broad and shortly 2-lobed, the lobes often ± toothed, acute, the whole 8–14 mm. long and 3–4 mm. broad at the two ends.
    Labellum
    Lip projecting forwards, elliptical or almost orbicular in outline, the margins deeply cut into long slender often branched threads, the entire median part narrowing towards the apex, 1.2–2.5 cm. long, when spread out 1–2 cm. broad.
    Column
    Column short, erect; anther horizontal, 3–4.5 mm. long; stigma reclinate, in front of the anther, transversely oblong, 2–3.5 mm. long and broad, rostellum erect, 3-lobed, the lobes narrow.
    Figures
    Fig. 31, p. 178.
    Habitat
    Upland grassland, sometimes with scattered shrubs; 1500–2700 m.
    Distribution
    T4 T7
    [FZ]

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

    Habit
    Plants 20–40 cm tall; bases often sheathed in old leaf fibres.
    Leaves
    Basal leaves 5–10, produced after flowering, frequently overtopping the spike, up to 30 cm long and less than 2 mm wide, semi-rigid and subsclerophyllous. Cauline leaves few, completely sheathing, 1.5–2.5 cm long, acuminate, larger towards the base of the stem.
    Inflorescences
    Inflorescence lax, rarely subsecund, 2–14-flowered.
    Bracts
    Bracts rarely as long as the flowers, ovate, acuminate, dry.
    Flowers
    Flowers varying from pale sky-blue to deep purple-blue, lip frequently a darker blue than the sepals.
    Spur
    Spur horizontal from the base of the galea, often somewhat ascending, 4–6 mm long, cylindric.
    Calyx
    Lateral sepals patent, (8)10–18 mm long, oblong to rarely lanceolate, acute to rounded. Dorsal sepal galeate; galea erect, (8)10–20 mm tall, 6–12 mm wide and 5–10 mm deep, ovate, acute.
    Corolla
    Petals with a basal, oblong to ovate anticous lobe 1–2.5 mm in wide; petal limb 8–13 mm long, linear, the apex deeply bifid, lacerate or acute.
    Labellum
    Lip horizontal, at least at base, 10–25 mm long, broadly to narrowly ovate, more or less deeply dissected.
    Anthers
    Anther horizontal, 2–5 mm long; viscidia separate, ovate.
    Rostellum
    Rostellum erect, equally 3-lobed, 2–3 mm tall.
    Stigma
    Stigma horizontal, 1 mm tall.
    Ovary
    Ovary straight or curved, 1–1.5 cm long.

    Images

    Distribution

    Native to:

    Burundi, Cape Provinces, Free State, KwaZulu-Natal, Malawi, Mozambique, Northern Provinces, Rwanda, Swaziland, Tanzania, Zambia, Zaïre, Zimbabwe

    Synonyms

    Other Data

    Disa baurii Bolus appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Johnston, H.H. [s.n.], Malawi K000077649
    Whyte, A. [s.n.], Malawi K000077650 Unknown type material
    Wild, H. [3556], Zimbabwe Disa hamatopetala 25238.000
    Richards, H.M. [22561], Malawi Disa hamatopetala 31411.000
    Williamson, G. [119], Zambia Disa hamatopetala 33975.000
    Davies, R.M. [2120], Zimbabwe Disa hamatopetala 3734.000
    la Croix, I. [489], Malawi Disa hamatopetala 50235.000
    Richards, M. [18500], Tanzania Disa hamatopetala 27325.000
    Cuthbert, N., Tanzania Disa hamatopetala 26266.000
    Whyte, A., Malawi Disa hamatopetala K000077651 Unknown type material
    Robson, N.K.B. [358], Zambia Herschelia hamatopetala 6875.000
    Baur, R. [814], South Africa Herschelianthe baurii K000416038 Unknown type material
    Timberlake, J. [5208], Mozambique Herschelianthe baurii K000613936
    Mphamba, S. [8], Mozambique Herschelianthe baurii K000613695

    Bibliography

    First published in J. Linn. Soc., Bot. 25: 174 (1889)

    Accepted by

    • Retief, E. & Meyer, N.L. (2017). Plants of the Free State inventory and identification guide Strelitzia 38: 1-1236. National Botanical Institute, Pretoria.
    • 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

    • Retief, E. & Meyer, N.L. (2017). Plants of the Free State inventory and identification guide Strelitzia 38: 1-1236. National Botanical Institute, Pretoria.

    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