Orchidaceae
Ypsilopus

Ypsilopus amaniensis (Kraenzl.) D'haijère & Stévart

First published in Taxon 68: 467 (2019)
This species is accepted
The native range of this species is S. Ethiopia to Zimbabwe. It is an epiphytic subshrub and grows primarily in the seasonally dry tropical biome.

Descriptions

Extinction risk predictions for the world's flowering plants to support their conservation (2024). Bachman, S.P., Brown, M.J.M., Leão, T.C.C., Lughadha, E.N., Walker, B.E. https://nph.onlinelibrary.wiley.com/doi/full/10.1111/nph.19592

Conservation
Predicted extinction risk: not threatened. Confidence: confident
[AERP]

Orchidaceae, I. la Croix & P.J. Cribb. Flora Zambesiaca 11:2. 1998

Morphology General Habit
Robust epiphytic or lithophytic herb, erect or pendent, often forming large clumps.
Morphology Stem
Stems up to 45 cm long, occasionally branched, covered with old leaf bases.
Morphology Roots
Roots stout, 3–4 mm in diameter.
Morphology Leaves
Leaves numerous, distichous; lamina 3.5–12 × 1–2.3 cm, ligulate or narrowly oblong, conduplicate, unequally and roundly 2-lobed at apex, articulated to imbricate leaf bases, coriaceous.
Morphology Reproductive morphology Inflorescences
Inflorescences 6–9 cm long, spreading, 5–13-flowered.
Morphology Reproductive morphology Flowers Pedicel and Ovary
Pedicel and ovary scabrid, 2–3 cm long.
Morphology Reproductive morphology Inflorescences Bracts
Bracts 5–6.5 mm long.
Morphology Reproductive morphology Flowers
Flowers white, fading to yellowish, the outside of sepals and the spur greenish; diurnally scented; very variable in size.
Morphology Reproductive morphology Flowers Perianth
Sepals and petals lanceolate, acuminate, spreading.
Morphology Reproductive morphology Flowers Calyx
Sepals 10–25 × 2.7–5.6 mm.
Morphology Reproductive morphology Flowers Corolla
Petals 9–21 × 2.2–5 mm.
Morphology Reproductive morphology Flowers Labellum
Lip 10–24 × 5–11 mm, rather obscurely 3-lobed about midway; side lobes rounded, mid-lobe 5–10.5 × 2.3–3.8 mm, lanceolate, acute; spur 7.5–16 cm long, pendent, slender.
Morphology Reproductive morphology Flowers Column
Column 4.5–5 mm long; stipes bifid, each lobe linear.
[FZ]

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

Morphology General Habit
An erect to pendent epiphyte or lithophyte, often forming dense clumps.
Morphology Stem
Stems up to 45 cm. long, unbranched or little branching, covered by persistent leaf-bases; roots little branched, 3–4 mm. in diameter.
Morphology Leaves
Leaves coriaceous, conduplicate, narrowly oblong, unequally roundly bilobed at the apex, 3.5–11.5 cm. long, 1–2.3 cm. wide, articulated to distichous, imbricate leaf-bases.
Morphology Reproductive morphology Inflorescences
Inflorescences spreading, 6–9 cm. long, 5–13-flowered; peduncle 1–1.5 cm. long; bracts 5–6.5 mm. long, drying black.
Morphology Reproductive morphology Flowers
Flowers very variable in size, white fading to yellow, greenish on the outer surface and spur, diurnally scented; pedicel and ovary 2.5–5.5 cm. long, scabrid.
Morphology Reproductive morphology Flowers Calyx
Sepals lanceolate, acuminate, 1–2.5 cm. long, 2.7–5.6 mm. wide.
Morphology Reproductive morphology Flowers Corolla
Petals lanceolate, acuminate, 0.9–2.1 cm. long, 2.2–5 mm. wide.
Morphology Reproductive morphology Flowers Labellum
Lip obscurely 3-lobed in the middle, 10–24 mm. long, 5–11 mm. wide; side lobes rounded; mid-lobe lanceolate.
Morphology Reproductive morphology Flowers Spur
Spur pendent, filiform, 7.5–16 cm. long.
Morphology Reproductive morphology Flowers Column
Column 4.5–5 mm. long; stipes bifid, each lobe linear; viscidium oblong.
Figures
Pl. 7.
Habitat
In montane forest of Juniperus procera, etc. and in open woodland; 1100–2600 m.
Distribution
K1 K3 K4 K6 T1 T2 T3 T5 T6 U1
[FTEA]

Sources

  • Angiosperm Extinction Risk Predictions v1

    • Angiosperm Threat Predictions
    • http://creativecommons.org/licenses/by/4.0

  • 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

    • 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 Vascular Plants 2024. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0

  • Kew Names and Taxonomic Backbone

    • The International Plant Names Index and World Checklist of Vascular Plants 2024. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0