Orchidaceae
Eulophia

Eulophia venulosa Rchb.f.

First published in Otia Bot. Hamburg.: 116 (1881)
This species is accepted
The native range of this species is Tanzania to S. Tropical Africa. It is a pseudobulbous geophyte and grows primarily in the seasonally dry tropical biome.

Descriptions

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

Morphology General Habit
Slender terrestrial herb 15–75 cm tall.
Vegetative Multiplication Pseudobulbs
Perennating organs subterranean, pseudobulbous, 1–6 × 1–2 cm, ovoid-conical with 3–4 nodes; roots 1–1.5 mm in diameter.
Morphology Leaves
Leaves 5–7, 5–24 cm × 0.5–1.5 mm, linear, acuminate, green, just starting to appear at flowering time.
Morphology Reproductive morphology Inflorescences
Inflorescence laxly 5–20-flowered; scape with 1 brownish sheath.
Morphology Reproductive morphology Flowers Pedicel and Ovary
Pedicel and ovary 8–12 mm long.
Morphology Reproductive morphology Inflorescences Bracts
Bracts 2–10 mm long, lanceolate, acuminate.
Morphology Reproductive morphology Flowers Perianth
Sepals and petals pinkish-brown with faint reticulate veining inside; lip white, sometimes lilac-tinged, the side lobes green with purplish veining.
Morphology Reproductive morphology Flowers Calyx
Sepals 15–22 × 2–3.5 mm, erect, linear, the apices rolled back.
Morphology Reproductive morphology Flowers Corolla
Petals 9–12 × 2.5–4 mm, narrowly elliptic-lanceolate, acute, semi-erect, also curled back at the tips.
Morphology Reproductive morphology Flowers Labellum
Lip 11–20 × 5–8 mm, 3-lobed; side lobes erect, obtuse; mid-lobe 11–12 × 6–8 mm, oblanceolate or ± rhomboid; callus of 3 basal fleshy ridges, with several lines of long papillae on the mid-lobe; spur 3–5.5 mm long, cylindrical, somewhat sigmoid, the apex often incurved.
Morphology Reproductive morphology Flowers Column
Column 3–5 mm long; foot 1–2 mm long.
Morphology Reproductive morphology Fruits
Capsule pendent, 16–18 mm long.
[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: not threatened. Confidence: confident
[AERP]

Habitat

Miombo woodland, on dry stony or sandy soil, also in wooded grassland and coastal forest

General Description

Slender terrestrial herb 15–75 cm tall.Perennating organs subterranean, pseudobulbous, 1–6 × 1–2 cm, ovoid-conical with 3–4 nodes; roots 1–1.5 mm in diameter.Leaves 5–7, 5–24 cm × 0.5–1.5 mm, linear, acuminate, green, just starting to appear at flowering time.Inflorescence laxly 5–20-flowered; scape with 1 brownish sheath.Pedicel and ovary 8–12 mm long; bracts 2–10 mm long, lanceolate, acuminate.Sepals and petals pinkish-brown with faint reticulate veining inside; lip white, sometimes lilac-tinged, the side lobes green with purplish veining.Sepals 15–22 × 2–3.5 mm, erect, linear, the apices rolled back.Petals 9–12 × 2.5–4 mm, narrowly elliptic-lanceolate, acute, semi-erect, also curled back at the tips.Lip 11–20 × 5–8 mm, 3-lobed; side lobes erect, obtuse; mid-lobe 11–12 × 6–8 mm, oblanceolate or ± rhomboid; callus of 3 basal fleshy ridges, with several lines of long papillae on the mid-lobe; spur 3–5.5 mm long, cylindrical, somewhat sigmoid, the apex often incurved.Column 3–5 mm long; foot 1–2 mm long.Capsule pendent, 16–18 mm long.

[E-EM]

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

    • 'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.
    • 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