Convolvulaceae
Jacquemontia

Jacquemontia ovalifolia (Choisy) Hallier f.

First published in Bot. Jahrb. Syst. 16: 543 (1893)
This species is accepted
The native range of this species is Tropical Africa, Madagascar. It is a scrambling subshrub and grows primarily in the seasonally dry tropical biome.

Descriptions

M. Thulin et al. Flora of Somalia, Vol. 1-4 [updated 2008] https://plants.jstor.org/collection/FLOS

Morphology General Habit
Annual or biennial prostrate herb; stems glabrous, up to 3 m long
Morphology Leaves
Leaf-blades oblong to elliptic, up to 8 x 4.5 cm, cuneate at the base, obtuse or emarginate at the apex, entire, glabrous; petiole up to 3 cm long
Morphology Reproductive morphology Inflorescences
Cymes few-flowered; peduncle up to c. 3(–6) cm long; bracts up to 8 x 3 mm
Morphology Reproductive morphology Flowers Calyx
Sepals ovate or obovate-elliptic, unequal, 4–7 x 4 mm, acute
Morphology Reproductive morphology Flowers Corolla
Corolla blue, c. 1 cm long
Morphology Reproductive morphology Fruits
Capsule c. 5 mm in diam.
Distribution
C2; S3 West Africa
Ecology
Altitude range 40–500 m.
[FSOM]

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

Morphology General Habit
Annual or biennial prostrate herb; branches slender, glabrous, ascending, up to 3 m. long.
Morphology Leaves
Leaf-blade oblong to oblong-lanceolate or elliptic, up to 8 cm. long and 4.5 cm. wide, obtuse or emarginate at the apex, cuneate at the base, entire, glabrous, very slightly fleshy; petiole up to 3 cm. long.
Morphology Reproductive morphology Inflorescences
Inflorescences few-flowered; peduncle usually short, 3 cm. long but reaching 6 cm.
Morphology Reproductive morphology Inflorescences Bracts
Bracts up to 8 mm. long and 3 mm. wide.
Morphology Reproductive morphology Flowers Calyx
Sepals ovate or obovate-elliptic, acute, unequal, 4–7 mm. long and 4 mm. wide, venose in fruit.
Morphology Reproductive morphology Flowers Corolla
Corolla blue, about 1 cm. long.
Morphology Reproductive morphology Fruits
Capsule pale brown, thin, 5 mm. in diameter; fruiting pedicels up to 1.3 cm. long.
Habitat
On bare mud of seasonal and other lakes, sandy beaches, etc.; 750–1000 m.
Distribution
K3 K7 T5 U2
[FTEA]

Convolvulaceae, H. Heine. Flora of West Tropical Africa 2. 1963

Morphology General Habit
Prostrate and ascending from a half-woody base, glabrous
Morphology Reproductive morphology Flowers
Pale blue flowers 1/2 in. long.
[FWTA]

Convolvulaceae, Maria Leonor Gonçalves. Flora Zambesiaca 8:1. 1987

Morphology General Habit
Annual or perennial herb.
Morphology Stem
Stems slender, woody at base, prostrate-ascending, radiating from a thick rootstock, glabrous or nearly so, with 2-armed hairs.
Morphology Leaves
Leaf lamina oblong to oblong-lanceolate or elliptic to subcircular, up to 5 × 3·5 cm., obtuse or emarginate at the apex, cuneate at the base, more or less glabrous, very slightly fleshy; petiole up to 3 cm. long.
Morphology Reproductive morphology Inflorescences
Inflorescences few-flowered axillary cymes; peduncle up to 3·5 cm. long, erect Bracts linear or obovate, up to 8 × 3 mm.
Morphology Reproductive morphology Flowers Calyx
Sepals ovate or obovate-elliptic, acute, unequal, 4–7 × 4 mm. venose in fruit.
Morphology Reproductive morphology Flowers Corolla
Corolla blue, subrotate to shallowly campanulate, about 1 cm. long.
Morphology Reproductive morphology Fruits
Capsule pale brown, thin, subglobose; fruiting pedicels up to 1·3 cm. long.
Morphology Reproductive morphology Seeds
Seeds trigonous, minutely areolate, the outer 2 margins narrowly and irregularly winged.
[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

  • Flora of Somalia

    • Flora of Somalia
    • http://creativecommons.org/licenses/by-nc-sa/3.0

  • Flora of Tropical East Africa

    • Flora of Tropical East Africa
    • http://creativecommons.org/licenses/by-nc-sa/3.0

  • Flora of West Tropical Africa

    • Flora of West Tropical 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 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