e-Key <span id="jodit_selection_marker_1710508123230_6998901060292992" data-jodit_selection_marker="start" style="line-height: 0; display: none;"></span>v3 - Ledermann<span id="jodit_selection_marker_1710508123230_6216448931296277" data-jodit_selection_marker="end" style="line-height: 0; display: none;"></span>iella
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Interactive keys to the identification of seed plants of southern Africa using keys based on plant morphology.

Podostemaceae - Ledermanniella Engl.

Description:

  • Small to fairly robust herbs, sometimes with thalloid bodies only or developing stems on which leaves and inflorescences are borne
  • Stems erect, branched, woody, often sparsely to densely covered with small, imbricate leaves or bracts
  • Leaves dimorphous: (a) floating, linear, often branching dichotomously; (b) bract-like, hard, often dentate, in many species covering the abbreviated, fertile shoots
  • Flowers single in axils of bract-like leaves, aggregated towards apices; spathella obovoid, apiculate, splitting laterally, apex remaining intact; flower recurved in spathella, becoming erect at anthesis, pedicelled
  • Perianth 0 or of 2 minute, subulate segments situated on each side of stamen(s)
  • Stamens 1 or 2, if 2, with filaments fused nearly to apex; pollen in monads or diads
  • Ovary ovoid to fusiform; styles 2, subulate, papillate, usually recurved
  • Capsule ovoid to ellipsoid, 10-ribbed, with all ribs running entire length of capsule, opening by 2 subequal valves; one or both persistent

Nomenclature:

  • Ledermanniella Engl.
    • Engler: 378 (1909)
    • Obermeyer: 208 (1970)
  • Inversodicraea Engl.
    • Engler: 271 (1915)
    • Obermeyer: 208 (1970)
    • Cusset: 361 (1983)

Distribution & Notes:

  • Global: Species ± 15
  • Southern Africa: Species 1: Ledermanniella warmingiana (Gilg) C.Cusset, Kunene River, Namibia

References:

  • CUSSET, C. 1983. Contribution à l'étude des Podostemaceae. Ledermanniella Engl. sous-genre Phyllosoma C.Cusset. Bulletin du Muséum National d'Histoire Naturelle, section B, Adansonia, ser. 4
  • ENGLER, A. 1909. Podostemonaceae africanae. III. Botanische Jahrbücher 43
  • ENGLER, H.G.A. 1915. Die Pflanzenwelt Afrikas 3(1). Engelmann, Leipzig
  • OBERMEYER, A.A. 1970. Podostemaceae. Flora of southern Africa 13