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This genus is accepted, and its native range is Tropical Africa.

[O-EM]
General Description

Terrestrial herbs with tuberous roots. Stem leafy, elongate. Leaves usually narrow, lanceolate, acute, scattered along the stem, not clustered. Inflorescence terminal, sparsely to densely many- flowered . Flowers resupinate, green; sepals and petals free. Sepals entire, the laterals spreading. Petals simple but often toothed or irregular. Labellum free, often a uriculate at base, three-lobed (rarely entire), with cylindrical spur. Column erect, the anther loculi divergent, separated by a broad connective; canals hardly developed; pollinaria two, each with a sectile pollinium, long caudicle and small viscidium; stigmatic processes each two-lobed with one lobe projecting down in front of the labellum base, the other lobe upright in front of the anther connective; rostellum three-lobed, mid- lobe low, rounded or emarginate, adnate to the connective; side lobes spreading, narrowed toward apex. (PC).

Ecology

Species of Roeperocharis are inhabitants of montane grassland at elevations up to 2440 m. Roeperocharis bennettiana Rchb.f. is a robust member of the genus growing up to 100 cm tall, specimens of which have been collected from Nyika National Park in Zambia and Malawi at 2200 m. It tends to grow in drier areas, but other congeneric orchids are usually found in bogs and other wet areas (e.g. R. wentzeliana Kranzl.). Roeperocharis flower in March and April in south-central Africa (la Croix and Cribb, 1995). (RN).

Distribution

A genus of five species in eastern Africa, from Ethiopia to Malawi and also in Cameroon. (PC).

[FZ]

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

Morphology General Habit
Terrestrial herb with tuberous roots, leafy stem and terminal inflorescence.
Morphology Reproductive morphology Flowers
Flowers green; sepals and petals free.
Morphology Reproductive morphology Flowers Labellum
Lip free, 3-lobed (rarely entire), with cylindrical spur.
Morphology Reproductive morphology Flowers Gynoecium Stigma
Stigmatic processes each 2-lobed with one lobe projecting down in front of the lip-base, the other lobe upright in front of the anther connective.
Morphology Reproductive morphology Flowers Column
Rostellum 3-lobed, mid-lobe low, rounded or emarginate, adnate to the connective; side lobes spreading, narrowed towards apex. Column erect, the anther loculi divergent, separated by a broad connective; canals hardly developed; pollinaria 2, each with a sectile pollinium, long caudicle and small viscidium.

[FTEA]

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

Morphology General Habit
Terrestrial herbs with tuberous roots
Morphology Stem
Stems unbranched, leafy
Morphology Leaves
Leaves usually narrow, scattered along the stem
Morphology Reproductive morphology Inflorescences
Inflorescence terminal, few- to many-flowered
Morphology Reproductive morphology Flowers
Flowers resupinate, green
Morphology Reproductive morphology Flowers Calyx
Sepals free, the laterals spreading
Morphology Reproductive morphology Flowers Corolla
Petals free, simple but often toothed or irregular, rather fleshy
Morphology Reproductive morphology Flowers Labellum
Lip free, calcarate, 3-lobed or rarely simple; spur cylindrical
Morphology Reproductive morphology Flowers Column
Column erect, the 2 anther-loculi separate at the sides of the broad connective and ± divergent, canals scarcely developed, auricles large, elliptical or quadrate; pollinaria 2, each with sectile pollinium, a long caudicle and small viscidium; stigmatic processes distinct, each 2-lobed, one lobe projecting downwards in front of the lip-base, the other upright in front of the anther-connective, rostellum 3-lobed, the side lobes spreading, narrowed towards the apex, the middle lobe low and rounded or emarginate, adnate to the connective.

Native to:

Ethiopia, Kenya, Malawi, Mozambique, Tanzania, Zambia, Zaïre

Roeperocharis Rchb.f. appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Williamson, G. [891], Zambia 27461.053

First published in Otia Bot. Hamburg.: 104 (1881)

Accepted by

  • Govaerts, R. (2003). World Checklist of Monocotyledons Database in ACCESS: 1-71827. The Board of Trustees of the Royal Botanic Gardens, Kew.
  • Pridgeon, A.M., Cribb, P.J., Chase, M.C. & Rasmussen, F.N. (2001). Orchidoideae (Part 1) Genera Orchidacearum 2: 1-416. Oxford University Press, New York, Oxford.

Literature

Flora Zambesiaca

  • Otia Bot. Hamburg.: 104 (1881).

Flora of Tropical East Africa

  • Otia Bot. Hamburg.: 104 (1881)

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

Kew Backbone Distributions
The International Plant Names Index and World Checklist of Selected Plant Families 2021. 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 2021. 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

Orchideae: e-monocot.org
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