e-Key v3 - *Beta
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Interactive keys to the identification of seed plants of southern Africa using keys based on plant morphology.

Chenopodiaceae - Chenopodioideae - Beteae - *Beta L.

Description :

  • Erect annual, biennial or perennial herbs, with furrowed, glabrous stems; roots woody, fleshy or much swollen
  • Leaves alternate, large, broad, flat, entire or nearly so, long-petiolate
  • Inflorescences simple or paniculate, with spike-like branches, composed of small, (1)2-4-flowered clusters, flowers of each cluster fused by their basally indurated perianth, whole cluster falling off at maturity, bracteate; bract 1, herbaceous, small to abortive; bracteoles 2
  • Flowers bisexual, sessile
  • Tepals 5, green or whitish, sometimes petaloid, basally indurated at fruiting time and often connate with other flowers in the glomerule, perigynous
  • Stamens 5; filaments inserted on a glandular disc
  • Ovary semi-inferior, connate with perianth tube at base, 3-carpellate, ± trigonous; stigmas 2-5, sessile, ovate, papillose on inner surface
  • Fruit enclosed in perianths that are connate by their swollen bases to form a pseudocarp which becomes detached at maturity, opening by a lid (operculum); pericarp fleshy or hard
  • Seed horizontal, lenticular or reniform, smooth or glossy; testa crustaceous; endosperm copious, central; embryo subannular
  • x = 9 (polyploidy)

Nomenclature:

  • *Beta L.
    • Linnaeus: 222 (1753)
    • Linnaeus: 103 (1754)
    • Jussieu: 85 (1789)
    • Hooker: 52 (1880)
    • Volkens: 56 (1892)
    • Ulbrich: 457 (1934)
    • Aellen: 550 (1960)
    • Ball: 91 (1964)
    • Brenan: 91 (1964)
    • Zohary: 138 (1966)
    • Ford-Lloyd & Williams: 89 (1975)
    • Wilson: 277 (1984)
    • Kühn: 265 (1993)
    • Letschert: 31 (1993)
    • Hedge: 20 (1997)

Distribution & Notes:

  • Global : Species ± 12, mainly in the Euro-Siberian and Mediterranean regions
  • Southern Africa : Cultivars derived from Beta vulgaris L. are food plants including Beetroot, Sugarbeet, Spinach Beet, etc.; some of these have escaped from cultivation, especially in Western Cape

References:

  • AELLEN, P. 1960. Chenopodiaceae . In G. Hegi, Illustrierte Flora von Mitteleuropa , edn 2, 3(2)
  • BALL, P.W. 1964. Chenopodiaceae . Beta . Flora europaea 1
  • BRENAN, J.P.M. 1964. Chenopodiaceae . Chenopodium . Flora europaea 1
  • FORD-LLOYD, B.V. & WILLIAMS, J.T. 1975. A revision of Beta sect. Vulgares with new light on the origin of cultivated beets. Botanical Journal of the Linnean Society 71
  • HEDGE, I.C. 1997. Chenopodiaceae . Beta , Atriplex , Bassia , Kochia , Halopeplis & Salicornia . Flora iranica 172
  • 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
  • KÜHN, U. 1993. Chenopodiaceae . In K. Kubitzki, J.G. Rohwer & V. Bittrich, The families and genera of vascular plants - dicotyledons 2. Springer-Verlag, Berlin
  • LETSCHERT, J.P.W. 1993. Beta section Beta : biogeographical patterns of variation, and taxonomy. Wageningen Agricultural University Papers 93-1
  • LINNAEUS, C. 1753. Species plantarum . Laurentius Salvius, Stockholm
  • LINNAEUS, C. 1754. Genera plantarum , edn 5. Laurentius Salvius, Stockholm
  • ULBRICH, E. 1934. Chenopodiaceae . Die natürlichen Pflanzenfamilien edn 2, 16c
  • VOLKENS, G. 1892. Chenopodiaceae . Die natürlichen Pflanzenfamilien 3,1a
  • WILSON, P.G. 1984. Chenopodiaceae . Flora of Australia 4
  • ZOHARY, M. 1966. Chenopodiaceae . Flora Palaestina 1