Eulophia macaulayae Summerh.

First published in Bull. Misc. Inform. Kew 1927: 416 (1927)
This species is accepted
The native range of this species is Angola to Zambia. It is a pseudobulbous geophyte and grows primarily in the seasonally dry tropical biome.

Descriptions

General Description

Slender terrestrial herb 27–38 cm tall.Perennating organs pseudobulbous, partly above ground, c. 5 × 1 cm, conical with several nodes, set close together.Leaves 3–5 in a tuft, 10–25 cm long, less than 1 mm wide, narrowly linear, acute, starting to develop at flowering time.Inflorescence laxly several-flowered, the flowers set 1.5–3 cm apart; scape with several sheaths.Pedicel and ovary 10–11 mm long; bracts c. 7 mm long, linear-lanceolate, acuminate.Flowers spreading, pendent after flowering, sweetly scented, yellow or yellow-green, the lip ± purple-veined.Sepals 12–15 × 1.5–2 mm, linear-spathulate, spreading, slightly reflexed at the tips.Petals 8–11 × 2–3 mm, oblong or lanceolate-oblong, obtuse, lying over column.Lip 10.5–13 × 5–6.5 mm when flattened, 3-lobed at about halfway; side lobes obliquely triangular, subacute; mid-lobe 4–6 × 3–4.5 mm, elliptic or obovate-elliptic, the margin crenulate; callus of 3 ridges running from the base to the junction of the lobes, turning to tubercular keels on the mid-lobe; spur 4–5 mm long, cylindrical but slightly inflated at apex, slightly curved.Column 4–5 mm long with a short foot.

Habitat

Miombo woodlands including Julbernalidia paniculata and Brachystegia boehmii woodlands on sandy soils and rock outcrops

[E-EM]

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

Morphology General Habit
Slender terrestrial herb 27–38 cm tall.
Vegetative Multiplication Pseudobulbs
Perennating organs pseudobulbous, partly above ground, c. 5 × 1 cm, conical with several nodes, set close together.
Morphology Leaves
Leaves 3–5 in a tuft, 10–25 cm long, less than 1 mm wide, narrowly linear, acute, starting to develop at flowering time.
Morphology Reproductive morphology Inflorescences
Inflorescence laxly several-flowered, the flowers set 1.5–3 cm apart; scape with several sheaths.
Morphology Reproductive morphology Flowers Pedicel and Ovary
Pedicel and ovary 10–11 mm long.
Morphology Reproductive morphology Inflorescences Bracts
Bracts c. 7 mm long, linear-lanceolate, acuminate.
Morphology Reproductive morphology Flowers
Flowers spreading, pendent after flowering, sweetly scented, yellow or yellow-green, the lip ± purple-veined.
Morphology Reproductive morphology Flowers Calyx
Sepals 12–15 × 1.5–2 mm, linear-spathulate, spreading, slightly reflexed at the tips.
Morphology Reproductive morphology Flowers Corolla
Petals 8–11 × 2–3 mm, oblong or lanceolate-oblong, obtuse, lying over column.
Morphology Reproductive morphology Flowers Labellum
Lip 10.5–13 × 5–6.5 mm when flattened, 3-lobed at about halfway; side lobes obliquely triangular, subacute; mid-lobe 4–6 × 3–4.5 mm, elliptic or obovate-elliptic, the margin crenulate; callus of 3 ridges running from the base to the junction of the lobes, turning to tubercular keels on the mid-lobe; spur 4–5 mm long, cylindrical but slightly inflated at apex, slightly curved.
Morphology Reproductive morphology Flowers Column
Column 4–5 mm long with a short foot.
[FZ]

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: threatened. Confidence: low confidence
[AERP]

Sources

  • Angiosperm Extinction Risk Predictions v1

    • Angiosperm Threat Predictions
    • http://creativecommons.org/licenses/by/4.0
  • Eulophiinae: e-monocot.org

    • All Rights Reserved
  • Flora Zambesiaca

    • Flora Zambesiaca
    • 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 2026. 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 2026. 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