Disa ochrostachya Rchb.f.

This species is accepted, and its native range is Cameroon to Tanzania and S. Tropical Africa.

[FWTA]

Orchidaceae, V. S. Summerhayes. Flora of West Tropical Africa 3:1. 1968

Morphology General Habit
An erect terrestrial herb, 1-3 ft. high
Morphology Leaves
Sheathing lanceolate leaves on flowering stems; foliage leaves on separate shoot, narrow, up to 15 in. long
Morphology Reproductive morphology Inflorescences
Flower spike long and slender
Morphology Reproductive morphology Flowers
Flowers yellow with orange markings
Ecology
In grassland.

[FZ]

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

Morphology General Shoots
Sterile shoots to 15 cm tall, with 2–3 erect, acute narrowly elliptic conduplicate leaves 15–20 × 4 cm. Fertile shoots slender to robust, 40–90 cm tall; cauline leaves imbricate, the basal leaf completely sheathing, the remainder with small free blades 5–9 × 1–3(4) cm, acute or apiculate.
Sterile
Sterile shoots to 15 cm tall, with 2–3 erect, acute narrowly elliptic conduplicate leaves 15–20 × 4 cm.
Fertile
Fertile shoots slender to robust, 40–90 cm tall; cauline leaves imbricate, the basal leaf completely sheathing, the remainder with small free blades 5–9 × 1–3(4) cm, acute or apiculate.
Morphology Reproductive morphology Inflorescences
Inflorescence dense, 15–30 cm long, cylindrical, tapering, 50–200-flowered.
Morphology Reproductive morphology Inflorescences Bracts
Bracts 1.5–2.5 cm long, acute to acuminate, with the apices reflexed.
Morphology Reproductive morphology Flowers
Flowers c. 1 cm in diameter, bright yellow or yellow with orange mottling.
Morphology Reproductive morphology Flowers Calyx
Dorsal sepal obovate, obtuse, galea 6–9 mm long, 4–7 mm wide and 2–3 mm deep, curved to face down. Lateral sepals 6–9 × 3–6 mm, narrowly oblong, obtuse to subacute, spreading sideways.
Morphology Reproductive morphology Flowers Spur
Spur pendent from the middle of the galea, 7–12 mm long, ± inflated in the lower half, subacute.
Morphology Reproductive morphology Flowers Corolla
Petals bifid; posterior lobe 5–7.5 × 1–2 mm, obtuse or subacute, erect behind the anther; anterior lobe 3–6 mm long, narrow and reaching two thirds up the length of the main petal and flanking the anther, rarely taller.
Morphology Reproductive morphology Flowers Labellum
Lip 5–9 mm long, linear, rarely irregularly toothed, pendent.
Morphology Reproductive morphology Flowers Gynoecium Stigma
Stigma 0.5–1 mm tall, lateral lobes well developed.
Morphology Reproductive morphology Flowers Gynoecium Ovary
Ovary 1–1.5 cm long.

Native to:

Angola, Burundi, Cameroon, Congo, Kenya, Malawi, Rwanda, Sudan, Tanzania, Uganda, Zambia, Zaïre, Zimbabwe

Disa ochrostachya Rchb.f. appears in other Kew resources:

Date Reference Identified As Barcode Type Status Has image?
Feb 1, 1970 Saxer, A. [2], Cameroon K000106518 No
Zambia 17326.020 No
Richards, H.M. [7703], Tanzania 20692.000 No
Richards, H.M. [14017], Tanzania 3746.000 No
Richards, H.M. [14241], Tanzania 3819.000 No
Cribb, P.J. [6004], Malawi 49143.000 No
Cribb, P.J. [6003], Malawi 49144.000 No
Milne-Redhead, E. [8921], Tanzania 514.000 No
Robson, N.K.B. [645], Malawi 515.000 No
Norlindh, T. [4766], Zimbabwe 511.000 No
Tweedie, E.M. [664], Kenya 512.000 No
Bally, P.R.O., Kenya 513.000 No
Richards, H.M. [10449], Malawi 516.000 No
Williamson, G. [146], Zambia 6049.369 No
Verdcourt, B. [3411], Tanzania 6679.000 No
Welwitsch [712], Angola K000077508 Unknown type material Yes
Maitland, T.D. [1779], Cameroon K000106517 No
Maitland, T.D. [1779], Cameroon K000106516 No

First published in Flora 48: 181 (1865)

Accepted by

  • Darbyshire, I., Kordofani, M., Farag, I., Candiga, R. & Pickering, H. (eds.) (2015). The Plants of Sudan and South Sudan: 1-400. Kew publishing, Royal Botanic Gardens, Kew.
  • 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 West Tropical Africa

  • F.T.A. 7: 279.
  • in Flora 48: 181 (1865)

Kew Backbone Distributions

  • Darbyshire, I., Kordofani, M., Farag, I., Candiga, R. & Pickering, H. (eds.) (2015). The Plants of Sudan and South Sudan: 1-400. Kew publishing, Royal Botanic Gardens, Kew.

  • Flora Zambesiaca

    Flora Zambesiaca
    http://creativecommons.org/licenses/by-nc-sa/3.0

  • Flora of West Tropical Africa

    Flora of West Tropical Africa
    http://creativecommons.org/licenses/by-nc-sa/3.0

  • Herbarium Catalogue Specimens

    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 2022. 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 2022. 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