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

Santalaceae - Thesidium Sond.

Description :

  • Hemiparasitic, dioecious shrublets, or annual or perennial herbs
  • Leaves alternate, often scale-like
  • Inflorescence a slender, terminal spike of solitary, or 2- or 3-flowered bracteolate cymules
  • Flowers unisexual
  • Male flowers hypocrateriform; perianth tube short, continuous with solid receptacle; lobes 4 or 5, spreading with a tuft of hairs arising from anthers; stamens 4; filaments arising at base of perianth lobes; anthers small; ovary and style rudimentary or often 0
  • Female flowers with perianth tube very shortly campanulate or scarcely evident, adnate to ovary; lobes 4(5); disc usually obscure; staminodes rarely present; ovules 2 or 3, pendulous from apex of a central, straight or folded, filiform placenta; style short; stigma obscurely 2- or 3-lobed
  • Fruit a globose or ovoid 5-ribbed nut, conspicuously reticulated with a fleshy basal ring crowned by a persistent perianth; endocarp crustaceous; embryo terete in centre of fleshy albumen

Nomenclature:

  • Thesidium Sond.
    • Sonder: 364 (1857)
    • Hill: 201 (1915)
    • Levyns: 340 (1950)

Distribution & Notes:

  • Southern Africa : Species ± 8, all in region, Western Cape from near Malmesbury to Port Elizabeth in Eastern Cape

References:

  • HILL, A.W. 1915. Santalaceae . Flora capensis 5,2
  • LEVYNS, M.R. 1950. Santalaceae . In R.S. Adamson & T.M. Salter, Flora of the Cape Peninsula . Juta, Cape Town
  • SONDER, O.W. 1857. Santalaceae . Flora 40