Convolvulaceae
Merremia

Merremia emarginata (Burm.f.) Hallier f.

First published in Bot. Jahrb. Syst. 16: 552 (1893)
This species is accepted
The native range of this species is Tropical Africa, S. China to Tropical Asia. It is a perennial 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: not threatened. Confidence: confident
[AERP]

Convolvulaceae, B. Verdcourt (East African Herbarium). Flora of Tropical East Africa. 1963

Morphology General Habit
Perennial; stems prostrate from a woody root, up to 75 cm. long, rooting at the nodes, sparsely hairy or glabrescent.
Morphology Leaves
Leaf-blade orbicular or ovate-reniform, 0.5–3.5 cm. long and wide, rounded or emarginate at the apex, cordate at the base with broadly rounded sinus and basal lobes, entire or coarsely crenate, glabrous or sparsely pilose; petiole up to 3.8 cm. long.
Morphology Reproductive morphology Flowers
Flowers axillary, solitary or in 2–3-flowered cymes; peduncle very short or absent; pedicels 2–4 mm. long.
Morphology Reproductive morphology Flowers Calyx
Sepals 2.5–6 mm. long, 1.3–3 mm. wide; outer shorter, obovate-elliptic, obtuse or subacute at the apex, glabrous; three inner longer, obovate, obcordate or orbicular, obsoletely cuspidate, the upper margins ciliate.
Morphology Reproductive morphology Flowers Corolla
Corolla yellow with pale or dark base and with midpetaline areas sometimes purplish or red-flushed, tubular-campanulate, 5–9 mm. long, glabrous.
Morphology Reproductive morphology Fruits
Capsule globose, 4.5–6 mm. in diameter.
Morphology Reproductive morphology Seeds
Seeds glabrous, about 3–6 mm. long, dark brown.
Habitat
Grasslands on heavy soils and abandoned cultivated ground subject to seasonal waterlogging; 1200–1800 m.
Distribution
T1
[FTEA]

Sources

  • Angiosperm Extinction Risk Predictions v1

    • Angiosperm Threat Predictions
    • http://creativecommons.org/licenses/by/4.0

  • Flora of Tropical East Africa

    • Flora of Tropical East Africa
    • 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 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

  • Kew Science Photographs

    • Copyright applied to individual images