1. Family: Convolvulaceae Juss.
    1. Genus: Ipomoea L.
      1. Ipomoea oblongata E.Mey. ex Choisy

        This species is accepted, and its native range is Ethiopia, S. Tropical & S. Africa.

    [FZ]

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

    Habit
    Perennial forming several to many annual prostrate or, when still young, suberect stems from a large thick fusiform tuberous root.
    Stem
    Stems up to 2 m. long, often suffruticose at base, occasionally thinner, thinly or occasionally densely pubescent with stiff yellowish or brownish hairs, like the petiole, leaf laminas, peduncles and calyces, very rarely glabrous.
    Leaves
    Leaf lamina very variable in size and shape, usually oblong or elliptic, varying to ovate or linear 2–10 × 1–9 cm., entire with usually rounded, truncate or subcordate base, sometimes broadly cuneate or cordate, obtuse or mucronate, sometimes emarginate, acute or broadly rounded at the apex, with the margin ciliate to sometimes densely ciliate upper surface thinly covered with strigose usually yellowish hairs, lower surface as thinly as the upper or more densely so; petioles usually much shorter than the laminas but occasionally about as long.
    Inflorescences
    Inflorescences 1-flowered, sometimes 2-flowered, rarely 3- or 4-flowered; peduncle terete, usually shorter than the leaves; bracteoles very variable but usually lanceolate, acute, hairy like the calyx, sometimes broadly oblong; pedicels usually very short, rarely exceeding 6 mm.
    Calyx
    Sepals generally lanceolate to ovate-lanceolate, 15–22 mm. long, subequal (inner ones slightly wider) but more or less unequal in specimens with broader oblong or ovate sepals in which the inner ones are narrower; usually acute or acuminate with very acute tips, rarely subobtuse; outer ones more or less densely covered with usually stiff yellowish hairs.
    Corolla
    Corolla magenta, funnel-shaped 3·5–6 cm. long; midpetaline areas usually thinly covered with silky appressed hairs, rarely quite glabrous.
    Fruits
    Fruits only rarely produced, subglobose, glabrous, dark brown abruptly apiculate and the apiculus crowned by the persistent style base, enclosed by the slightly accrescent and coriaceous sepals, 1–4-seeded.
    Seeds
    Seeds glabrous, grey, finely punctate to smooth.
    [FZ]

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

    Habit
    Prostrate perennial with fusiform tuberous root.
    Stem
    Stems stout, often angular up to 2 m. long, usually densely covered with short stiff hairs as are petioles, peduncles, bracts and pedicels.
    Leaves
    Leaf lamina oblong to ovate-elliptic, 6–14 × 4–7·5 cm., broadly cuneate, truncate, rounded to shallowly cordate at the base, obtuse, emarginate or rounded and mucronate, occasionally acute, at the apex, thinly covered on both surfaces with appressed or somewhat spreading short stiff hairs, sometimes very densely so; petiole 1–7.5 cm. long.
    Inflorescences
    Inflorescence a pedunculate, dense, few-flowered capitate cyme, occasionally reduced to a single flower; peduncle terete, 3–13 cm. long; bracteoles lanceolate or elliptic-lanceolate or narrowly ovate-lanceolate, usually narrowed at the base, 2–3.5 cm. long, hairy; pedicels very short or absent.
    Calyx
    Sepals unequal, 18–3·5 cm. long, outer ones ovate-lanceolate to oblong, inner ones narrower, all usually acute to long acuminate, hairy.
    Corolla
    Corolla funnel-shaped, magenta, 4–7·5 cm. long; midpetaline areas silky-pilose.
    Fruits
    Capsule and seeds unknown.

    Images

    Distribution

    Native to:

    Botswana, Cape Provinces, Ethiopia, Free State, KwaZulu-Natal, Lesotho, Mozambique, Namibia, Northern Provinces, Swaziland, Zimbabwe

    Ipomoea oblongata E.Mey. ex Choisy appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Zeyher [s.n.], South Africa Turbina oblongata K000097058
    Drege, South Africa Turbina oblongata K000097060
    Drege [18381], South Africa Turbina oblongata K000097062
    Cooper, T. [1355], South Africa Turbina oblongata K000097059
    Baur, R. [853], South Africa Turbina oblongata K000097061

    First published in A.P.de Candolle, Prodr. 9: 368 (1845)

    Accepted by

    • Meeuse, A.D.J. & W.G. Welman (2000). Convolvulaceae Flora of Southern Africa 28: 1-138. Botanical Research Institute, Department of Agriculture.
    • Baker, J.G. & C.H. Wright in Thiselton Dyer, W.T. et al. (eds.) (1904). Convolvulaceae Flora Capensis 4(2): 45-87.

    Not accepted by

    • Hedberg, I., Kelbessa, E., Edwards, S., Demissew, S. & Persson, E. (eds.) (2006). Flora of Ethiopia and Eritrea 5: 1-690. The National Herbarium, Addis Ababa University, Ethiopia & The Department of Systematic Botany, Upps. [Cited as Turbina oblongata.]
    • Meeuse, A.D.J. & W.G. Welman (2000). Convolvulaceae Flora of Southern Africa 28: 1-138. Botanical Research Institute, Department of Agriculture. [Cited as Ipomoea crassipes.]
    • Gonçalves, M.L. (1987). Convolvulaceae Flora Zambesiaca 8(1): 9-129. Royal Botanic Gardens, Kew. [Cited as Turbina oblongata.]
    • Verdcourt, B. (1963). Convolvulaceae Flora of Tropical East Africa: 1-161. [Cited as Ipomoea crassipes.]
    • Hallier, H. (1899). Convolvulaceae Bulletin de l'Herbier Boissier 7: 41-64. l'Herbier Boissier. [Cited as Ipomoea crassipes var ukambensis (Vatke) Hallier f..]

    Literature

    Kew Backbone Distributions
    • Hedberg, I., Kelbessa, E., Edwards, S., Demissew, S. & Persson, E. (eds.) (2006). Flora of Ethiopia and Eritrea 5: 1-690. The National Herbarium, Addis Ababa University, Ethiopia & The Department of Systematic Botany, Upps.
    • Meeuse, A.D.J. & W.G. Welman (2000). Convolvulaceae Flora of Southern Africa 28: 1-138. Botanical Research Institute, Department of Agriculture.

    Sources

    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 Selected Plant Families 2019. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

    Kew Names and Taxonomic Backbone
    The International Plant Names Index and World Checklist of Selected Plant Families 2019. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0