African Plant Database

Wolffiella welwitschii (Hegelm.) Monod
Family : Lemnaceae
Protologue : Mem. Soc. Hist. Nat. Afr. Nord, Hors -ser., ii. (Trav. Bot. dedies a Rene-Maire) 229, 242 (1949)
Information on the genus : Wolffiella
Basionym : Wolffia welwitschii Hegelm.
Status for SA : accepted (present)
Status for TA : accepted (present)
Synonym(s) Homotypic
 Wolffia welwitschii Hegelm. (1865)
 Wolffiopsis welwitschii (Hegelm.) Hartog & Plas (1970)
Ecology and distribution
Trop. Afr.
Biology : Frond submerged, basal part near the surface of the water, tip bent downwards, cohering 2-3 together, tongue-shaped and bent backwards at base (saddle-like), 3-9x0,8-5 mm, apex rounded, margins without teeth, with 0-12 stomata; air spaces distinct; with a tract of elongated cells running along the median line of the lower wall of the pouch; flowers 2 per frond (reproductive fronds narrower than vegetative ones). Often flowering and fruiting.
Ecology : Quiet water; pools and lakes (sometimes under shade) in and near the forest zone; not gregarious; usually mixed with other floating plants, Nymphaeaceae, or among reeds; 0-2100 m alt.
  S. Africa, Botswana; C. America, N S. America, Caribbean region
South. Afr.
Biol./Eco : perennial-Herb, Hydrophyte, Pleustophyte- Alt: 1 - 900 m. Distribution: BOT, KN

Bibliography for Tropical Africa :
  • Darbyshire, I. Kordofami, M. & al. (2015). The plants of Sudan and South Sudan, An annoted checklist. Kew Publishing
  • César J. & C. Chatelain (2019). Flore illustrée du Tchad. Conservatoire et Jardin botaniques de Genève, Coopération Suisse & Univ. N'Djaména

Bibliography for Southern Africa :
  • Énum. Pl. Fleurs Afr. Trop. 3: 81 (1995).
More info on :
see under Jstor_African Plant Initiative
see under Flore d'Afrique Centrale
see under The International Plant Name Index
see under Flora of Zimbabwe
More information >> ( work in progress )
Record n°15692
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