e-Key v<span id="jodit_selection_marker_1706780046397_6099643355532007" data-jodit_selection_marker="start" style="line-height: 0; display: none;"></span>3 - *Anr<span id="jodit_selection_marker_1706780046397_5657026354580437" data-jodit_selection_marker="end" style="line-height: 0; display: none;"></span>edera
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Interactive keys to the identification of seed plants of southern Africa using keys based on plant morphology.

Basellaceae - *Anredera Juss.

Description:

  • Twining or scrambling, herbaceous subsucculent vines; roots often thickened; stems smooth, glabrous, producing axillary, subterranean to aerial tubers up to 25 mm thick
  • Leaves slightly fleshy, often tinged with red, shortly to distinctly petiolate
  • Inflorescences axillary or terminal panicles or racemes, with many small, pedicellate flowers in axils of small bracts; bracteoles subtending flower distinctly developed, persistent or deciduous, ± thin, triangular to broadly ovate, free or sometimes connate at base, ± entire
  • Flowers bisexual or functionally unisexual, chasmogamous, fragrant
  • Sepals ± adnate to floral cup, sometimes ± strongly keeled, slightly shorter than petals, patent to erect, rhombic or rounded ovate to elliptic, free, adnate to petals at base
  • Petals with 1-3 ± distinct veins, patent to erect, small, thin to fleshy, connate only at base, spreading at maturity, white or yellowish to reddish
  • Stamens free to base or shortly connate, opposite and inserted on petal bases; filaments filiform or subulate, recurved in bud; anthers oblong, versatile
  • Ovary globose to pyriform; ovule 1, subsessile; style 1, 3-partite up to about middle, with clavate to capitate stigmas
  • Fruit a nutlet, smooth, partly or completely enclosed by persistent dry perianth
  • Seed erect, lenticular, with crustaceous seedcoat; embryo semi-annular
  • x = 12 (1 report)

Nomenclature:

  • *Anredera Juss.
    • Jussieu: 84 (1789)
    • Hooker: 78 (1880)
    • Volkens: 128 (1893)
    • Ulbrich: 271 (1934)
    • Bogle: 590 (1969)
    • Sperling & Bittrich: 146 (1993)
    • Eriksson: 67 (1996)
  • Boussingaultia Kunth
    • Kunth: 194, t. 645 (1825)
  • Tandonia Moq.
    • Moquin-Tandon: 226 (1849)

Distribution & Notes:

  • Global: Species 10-15, from S Florida and Texas to Argentina, the majority of species occurring in northern South America
  • Southern Africa: Cultivated as ornamentals and 1 naturalised: * Anredera cordifolia (Ten.) Steenis, locally a noxious invader

References:

  • BOGLE, A.L. 1969. The genera of Portulacaceae and Basellaceae in the southeastern United States. Journal of the Arnold Arboretum 50
  • ERIKSSON, R. 1996. Basellaceae. Flora of Ecuador 55
  • HOOKER, J.D. 1880. Chenopodiaceae. In G. Bentham & J.D. Hooker, Genera plantarum 3,1. Lovell Reeve & Co., London
  • JUSSIEU, A.L. DE. 1789. Atriplices, les Arroches. Genera plantarum secundum ordines naturales disposita. Herissant & Barrois, Paris
  • KUNTH, C.S. 1825. Chenopodeae Ceand. In A. de Humboldt, A. Bonpland & C.S. Kunth, Nova genera et species plantarum 7. Libraria Graeco-Latino-Germanica, Paris
  • MOQUIN-TANDON, C.H.B.A. 1849. Chenopodiaceae. In A.P. de Candolle, Prodromus 13. Treuttel & Würtz, Paris
  • SPERLING, C.R. & BITTRICH, V. 1993. Basellaceae. In K. Kubitzki, J.G. Rohwer & V. Bittrich, The families and genera of vascular plants - dicotyledons 2. Springer-Verlag, Berlin
  • ULBRICH, O.E. 1934. Basellaceae. Die natürlichen Pflanzenfamilien 2,16c
  • VOLKENS, G. 1893. Basellaceae. Die natürlichen Pflanzenfamilien 3,1a