Orchidaceae
Habenaria

Habenaria tridens Lindl.

First published in Companion Bot. Mag. 2: 208 (1837)
This species is accepted
The native range of this species is S. Tropical & S. Africa. It is a tuberous geophyte and grows primarily in the seasonally dry tropical biome.

Descriptions

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

Morphology General Habit
Slender terrestrial herb 18–32 cm high.
Morphology Stem
Stem leafy along its length.
Morphology Leaves
Leaves 8–10, the lowermost 2–3 sheath-like, the upper 2–3 bract-like, those in the middle 4.5–11 × 0.5–1 cm, narrowly lanceolate to linear.
Morphology Reproductive morphology Inflorescences
Inflorescence 5–12 × 1 cm fairly laxly up to c. 20-flowered; bracts c. 15 × 4 mm, lanceolate, acute.
Morphology Reproductive morphology Flowers
Flowers pale green.
Morphology Reproductive morphology Flowers Pedicel and Ovary
Ovary and pedicel 8–14 mm long.
Morphology Reproductive morphology Flowers Calyx
Dorsal sepal 3–3.6 × 2.5–3 mm, ovate, erect, convex; lateral sepals 4.5–5.2 × 2–2.2 mm, obliquely lanceolate, deflexed.
Morphology Reproductive morphology Flowers Corolla
Petals 2-lobed almost to base, the lobes more or less opaque; upper lobe 3–3.5 × 1.2 mm; lower lobe c. 2 × 0.4 mm.
Morphology Reproductive morphology Flowers Labellum
Lip 3-lobed with basal undivided part 1.3 mm long, all lobes linear; mid-lobe c. 3.5 × 0.5 mm; side lobes c. 2.4 mm long, slightly narrower than mid-lobe; spur 8–10 mm long, slender, pendent.
Morphology Reproductive morphology Flowers Androecium Stamens Anthers
Anther 1.3 mm high; canals very short, 0.4 mm long.
Morphology Reproductive morphology Flowers Gynoecium Stigma
Stigmas c. 1 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]

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

  • 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 2025. 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 2025. 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