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This species is accepted, and its native range is Tanzania (Mt. Meru, W. Usambara Mountains).
A specimen from Kew's Herbarium

[FTEA]

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

Morphology General Habit
A pendent epiphyte 6–27 cm. long with a short stem, 0.5–3 cm. long, entirely hidden by the leaf-bases.
Morphology Leaves
Leaves bilaterally compressed, iridiform, linear-tapering, acuminate, 4–25 cm. long, 2–5 mm. wide, articulated obliquely to prominent leaf-bases up to 2 cm. long.
Morphology Reproductive morphology Inflorescences
Inflorescences 1–several, 1 (–2)-flowered, 2–6 cm. long; peduncle slender, wiry, up to 5 cm. long; bracts elliptic-ovate, acute, 2–3 mm. long.
Morphology Reproductive morphology Flowers
Flowers pale yellow-green or whitish green, scabrid on the outer surface; pedicel and ovary 5–7 mm. long.
Morphology Reproductive morphology Flowers Calyx
Dorsal sepal lanceolate, acuminate, 7–9 mm. long, 1.5–2 mm. wide; lateral sepals similar but oblique at the base.
Morphology Reproductive morphology Flowers Corolla
Petals linear-lanceolate, acuminate, 6–8 mm. long, 1.5–1.8 mm. wide.
Morphology Reproductive morphology Flowers Labellum
Lip entire, lanceolate, acuminate, deflexed, 7–8 mm. long, 2 mm. wide.
Morphology Reproductive morphology Flowers Spur
Spur decurved-pendent, slenderly cylindrical, 15–18 mm. long.
Morphology Reproductive morphology Flowers Column
Column 1 mm. long.
Figures
Fig. 160, p. 629.
Habitat
Epiphyte on the branches of Halleria lucida and Agauria salicifolia in mixed montane forest of Podocarpus gracilior, Juniperus procera and Nuxia congesta; 2100–2350 m.
Distribution
not known elsewhere T2 T3

Native to:

Tanzania

Ypsilopus viridiflorus P.J.Cribb & J.Stewart appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Greenway, P.J. 31666.000
Greenway, P.J. [13493], Tanzania K000306407
Drummond, R.B. [2555], Tanzania K000390325
Cribb, P.J. [10839], Tanzania K000390324
Greenway, P.J. [13621], Tanzania K000390326
Bjornstad, I. [232], Tanzania K000390327

First published in Kew Bull. 40: 417 (1985)

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

  • Cribb & J. Stewart in Kew Bulletin 40: 417 (1985).

Flora of Tropical East Africa
Flora of Tropical East 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 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