Lythraceae
Ammannia

Ammannia robinsoniana (A.Fern.) S.A.Graham & Gandhi

First published in Harvard Pap. Bot. 18: 82 (2013)
This species is accepted
The native range of this species is N. Zambia. It is an annual 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: threatened. Confidence: confident
[AERP]

Lythraceae, A. Fernandes. Flora Zambesiaca 4. 1978

Morphology General Habit
Erect or decumbent glabrous annual herb, up to 20 cm. high.
Morphology Stem
Stem subterete towards the base, 4-gonous or 4-winged above, branched sometimes from the base.
Morphology Leaves
Leaves 10–25 x 2–6 mm., decussate, narrowly lanceolate, acute at the apex, margin slightly scabrous, rounded or attenuate into a short petiole at the base, 1-nerved.
Morphology Reproductive morphology Inflorescences
Dichasia axillary, 3–11-flowered, pedunculate, the peduncles 1–10 mm. long; outer bracteoles c. 6 x 1·25 mm., foliaceous with the basal part slightly scarious, recurved, sometimes folded at the midrib; inner bracteoles c. 2·25 x 0·5 mm., linear, greenish upwards, becoming shorter and completely scarious inwards.
Morphology Reproductive morphology Flowers
Flowers 4–5-merous, pedicellate, the pedicels c. 1·5 mm. long.
Morphology Reproductive morphology Flowers Calyx
Calyx 1·5–2 mm., turbinate-campanulate; lobes c. 1 mm. broad and 0·5 mm. high, deltate, inflected inwards; appendages spreading, c. 1 mm. long, curved upwards, glabrous or ciliolate at the apex.
Morphology Reproductive morphology Flowers Corolla
Petals 0.
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens as many as and opposite the calyx-lobes, inserted slightly below the middle of calyx-tube, attaining the apex of the calyx-lobes.
Morphology Reproductive morphology Flowers Gynoecium Pistil
Ovary 0·75 x 0·5 mm., ovoid, 2-locular; style and stigma c. 0·5 mm. long.
Morphology Reproductive morphology Fruits
Capsule globose, included.
Morphology Reproductive morphology Seeds
Seeds c. 0·25 mm. in diameter, yellowish, concave-convex.
[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

    • '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.

  • 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