1. Family: Fabaceae Lindl.
    1. Genus: Sesbania Scop.
      1. Sesbania transvaalensis J.B.Gillett

        This species is accepted, and its native range is S. Adrica.

    [FZ]

    Flora Zambesiaca Leguminosae subfamily Papillionoideae by G.P. Lewis

    Habit
    Erect annual herb or spindly subshrub (0.6)1.5(2) m tall. Erect annual herb or spindly subshrub (0.6)1.5(2) m tall.
    Inflorescences
    Racemes 1.6–9 cm long, (2)5–7(10)-flowered; peduncle 1.5–3.9 cm long, glabrous; pedicels 4–10 mm long, glabrous; bracts 1.5–3(4) mm long, linear, persistent; bracteoles 1.5–3 mm long, linear, persistent, located below the receptacle. Racemes 1.6–9 cm long, (2)5–7(10)-flowered; peduncle 1.5–3.9 cm long, glabrous; pedicels 4–10 mm long, glabrous; bracts 1.5–3(4) mm long, linear, persistent; bracteoles 1.5–3 mm long, linear, persistent, located below the receptacle.
    Calyx
    Calyx 3–4 × 2.5–4 mm; tube glabrous; teeth 0.5–1 mm long, subulate, sparsely woolly on the inner surface and at the tips. Calyx 3–4 × 2.5–4 mm; tube glabrous; teeth 0.5–1 mm long, subulate, sparsely woolly on the inner surface and at the tips.
    Ovary
    Ovary and style glabrous, 10–13-ovulate, ovules widely spaced.
    Fruits
    Pod (4.6)6–8.5 cm × 1.5–2.75 mm, linear to slightly falcate, moniliform, rostrate, stipitate, held ± erect, glabrous, 7–12-seeded; septa 5–7 mm apart; valves with reticulate venation in central area above seeds, the margins developing a slightly raised ridge on drying which tapers out towards the septa. Pod (4.6)6–8.5 cm × 1.5–2.75 mm, linear to slightly falcate, moniliform, rostrate, stipitate, held ± erect, glabrous, 7–12-seeded; septa 5–7 mm apart; valves with reticulate venation in central area above seeds, the margins developing a slightly raised ridge on drying which tapers out towards the septa.
    Seeds
    Seeds brown or olive-green mottled blackish, 3 × 1.75 mm, 1.75–2 mm thick; small hilum in central circular pit. Seeds brown or olive-green mottled blackish, 3 × 1.75 mm, 1.75–2 mm thick; small hilum in central circular pit.
    Distribution
    A species of South Africa (North-West, Limpopo, Gauteng and Free State Provinces) and just entering into SE Botswana, where it is only known from one collection.
    Ecology
    In South Africa it is recorded from brackish flats, river banks and wet grassland; on black loam and coarse sandy soils; 1230–1450 m.
    Stem
    Stems glabrous, without prickles. Stems glabrous, without prickles.
    Leaves
    Leaves (2)6.4–9.5(12.3) cm long, the rachis glabrous or occasionally with scattered hairs; petioles 3–7 mm long; leaflets in 5–20(29) pairs, 3.5–10 × 1.5–3 mm, oblong, rounded to slightly emarginate atthe apex, apiculate, asymmetrical at the base, entire, glabrous or with minute hairs scattered along the margins, on the midvein beneath and on the petiolules, punctate above with minute dark dots; stipules 3–5 mm long, linear-triangular to linear-lanceolate, caducous to persistent. Leaves (2)6.4–9.5(12.3) cm long, the rachis glabrous or occasionally with scattered hairs; petioles 3–7 mm long; leaflets in 5–20(29) pairs, 3.5–10 × 1.5–3 mm, oblong, rounded to slightly emarginate atthe apex, apiculate, asymmetrical at the base, entire, glabrous or with minute hairs scattered along the margins, on the midvein beneath and on the petiolules, punctate above with minute dark dots; stipules 3–5 mm long, linear-triangular to linear-lanceolate, caducous to persistent.
    Corolla
    Standard yellow with strong purple to reddish veining on the outer face, 1–1.2 × 0.85–1.1 cm, suborbicular, apically emarginate, the appendages small, triangular, divergent and without free tips; wings yellow, 1–1.1 cm × 3.25–4 mm, with an upper basal tooth and with lamellate sculpturing in upper basal half on outer face; keel yellow (slightly paler than wings) with some purple striping on the beak, 1.1–1.2 cm × 4–6 mm, the limb with a ± horizontal acuminate tooth. Standard yellow with strong purple to reddish veining on the outer face, 1–1.2 × 0.85–1.1 cm, suborbicular, apically emarginate, the appendages small, triangular, divergent and without free tips; wings yellow, 1–1.1 cm × 3.25–4 mm, with an upper basal tooth and with lamellate sculpturing in upper basal half on outer face; keel yellow (slightly paler than wings) with some purple striping on the beak, 1.1–1.2 cm × 4–6 mm, the limb with a ± horizontal acuminate tooth.
    Pistil
    Ovary and style glabrous, 10–13-ovulate, ovules widely spaced.
    [ILDIS]

    International Legume Database and Information Service

    Conservation
    Not Threatened
    Ecology
    Africa: Zambezian freshwater swamp and aquatic vegetation, Kalahari-Highveld regional transition zone; freshwater swamp & aquatic vege.
    Habit
    Annual, Not climbing, Herb

    Distribution

    Native to:

    Botswana, Free State, Northern Provinces

    Sesbania transvaalensis J.B.Gillett appears in other Kew resources:

    First published in Kew Bull. 17: 147 (1963)

    Accepted by

    • Brummitt, R.K. & al. (2007). Flora Zambesiaca 3(3): 1-258. Royal Botanic Gardens, Kew.
    • Germishuizen, G. & Meyer, N.L. (eds.) (2003). Plants of Southern Africa an annotated checklist Strelitzia 14: 1-1231. National Botanical Institute, Pretoria.
    • Lock, J.M. (1989). Legumes of Africa a check-list: 1-619. Royal Botanic Gardens, Kew.

    Literature

    Flora Zambesiaca
    • —Lewis in Kirkia 13: 47 (1988).
    • in Kew Bull. 17: 147, fig. 7/3 (1963).
    Kew Backbone Distributions
    • Germishuizen, G. & Meyer, N.L. (eds.) (2003). Plants of Southern Africa an annotated checklist Strelitzia 14: 1-1231. National Botanical Institute, Pretoria.
    • Lock, J.M. (1989). Legumes of Africa a check-list: 1-619. Royal Botanic Gardens, Kew.
    International Legume Database and Information Service
    • Lewis, G. P. (1989). Kirkia 13(1) :11-51. Sesbania in Flora Zambesiaca region
    • Gillett, J. B. (1963). Kew Bull. 17:91-159. Sesbania in Africa (excl. Madagascar

    Sources

    Flora Zambesiaca
    Flora Zambesiaca
    http://creativecommons.org/licenses/by-nc-sa/3.0

    International Legume Database and Information Service
    International Legume Database and Information Service (ILDIS) V10.39 Nov 2011
    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