Orchidaceae
Satyrium

Satyrium riparium Rchb.f.

First published in Flora 48: 183 (1865)
This species is accepted
The native range of this species is SW. Tanzania to S. Tropical Africa. It is a tuberous geophyte and grows primarily in the subtropical 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 and P.J. Cribb. Flora Zambesiaca 11:1. 1995

Morphology General Habit
Terrestrial herb 40–80 cm high; tubers up to 4.5 cm long, ovoid or ellipsoid, villous.
Morphology General Shoots
Sterile shoot 3–4-leaved; lowermost 1–2 leaves sheathing; upper leaves to 10 × 3.5 cm, lanceolate or elliptical.
Sterile
Sterile shoot 3–4-leaved; lowermost 1–2 leaves sheathing; upper leaves to 10 × 3.5 cm, lanceolate or elliptical.
Morphology Stem
Flowering stem with 7–12 sheathing leaves up to 7 cm long.
Fertile
Flowering stem with 7–12 sheathing leaves up to 7 cm long.
Morphology Reproductive morphology Inflorescences
Inflorescence 11–32 × 2–3 cm, cylindrical, fairly laxly many-flowered.
Morphology Reproductive morphology Flowers
Flowers greenish-yellow, tinged with brown and purple.
Morphology Reproductive morphology Flowers Gynoecium Ovary
Ovary 7–8 mm long, curved, papillose.
Morphology Reproductive morphology Inflorescences Bracts
Bracts 1–3 cm long at base of inflorescence, reflexed.
Morphology Reproductive morphology Flowers Perianth
Sepals and petals decurved, joined to each other and lip for about half their length.
Morphology Reproductive morphology Flowers Calyx
Median sepal 5–7.5 × 1–1.5 mm, oblong; lateral sepals of similar length, c. 2 mm wide, obliquely oblanceolate.
Morphology Reproductive morphology Flowers Corolla
Petals slightly shorter than sepals, puberulous.
Morphology Reproductive morphology Flowers Labellum
Lip fleshy, 5.5–7 mm long, ellipsoid, the apex reflexed, narrow-mouthed.
Morphology Reproductive morphology Flowers Spur
Spurs slender, 18–25 mm long, straggling, ascending in young flowers but ± pendent in older flowers; often with an extra pair of vestigial spurs.
Morphology Reproductive morphology Flowers Column
Column curved, 5 mm long; rostellum mid-lobe spade-shaped from a narrow base, much longer than side lobes.
[FZ]

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

    • 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