Scleria welwitschii C.B.Clarke
  • Consp. Fl. Afric.


Cite taxon page as 'WFO (2020): Scleria welwitschii C.B.Clarke. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0000553274. Accessed on: 17 Feb 2020'

Diagnostic Description

Perennial with annual aerial parts. This species is morphologically similar to S. rehmannii C.B.Cl. and S. longispiculata Nelmes. All three species have ± horizontal, woody rhizomes; that of S. welwitschii is reddish, those of S. rehmannii and S. longispiculata pale stramineous. The inflorescences of S. welwitschii and S. rehmannii are simply glomerate-spicate or, in S. welwitschii and less often in S. rehmannii with one or a few lateral branches from the proximal glomerules, whereas that of S. longispiculata is unbranched. The inflorescence of S. welwitschii is lax and drooping, those of S. rehmannii and S. longispiculata are rigid, ±erect. Spikelets of 5. welwitschii are 5-8 mm long; of S. rehmannii 4-5 mm long; of S. longispiculata 8-9 mm long. The glumes of S. welwitschii are fulvous-stramineous or castaneous; of S. rehmannii wholly or partly blackish-red; of S. longispiculata light castaneous. Achenes of S. welwitschii and S. longispiculata are smooth; those of S. rehmannii smooth or lightly tuberculate. Achenes of S. welwitschii and S. rehmannii are grey or light brown; of S. longispiculata brown with the stipe black. Achenes of S. welwitschii and S. rehmannii are ± 2 mm long; those of S. longispiculata ± 4 mm long.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 2
    • ]. 

    Morphology

    Perennial. Rhizomes 3-4 mm thick, woody, red; scales stramineous-reddish. Culms 0.30-1 m tall, villous to glabrescent, 5-7 mm distant. Leaves 2-3 mm broad, glabrous to villous; sheath with mouth produced into a triangular or rounded, villous or glabrescent tongue 1-2 mm long. Inflorescence branched or unbranched, (60)-150-250 mm long, drooping. Glomerules (1)-3-8 per branch, of 1-2-(6) sessile spikelets. Bracts shortly awned, shorter than the glomerules. Spikelets 5-7-(8) mm long. Glumes 3-5 mm long, glabrous or minutely hispidulous distally, shortly awned, pale stramineous with faint reddish streaks. Achene ellipsoid to ovoid, 1.5-1.8 x 1-1.2 mm, glabrous, smooth, grey.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 2
    • ]. 

    Perennial herb, up to 1 m high. Inflorescence rhachis drooping, 60-250 mm long. Spikelets 5-7(-8) mm long. Glumes tawny, glabrous or glabrescent, pale stramineous with faint reddish streaks.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 3
    • ]. 

    Habitat

    Occurring in permanently boggy grassland areas.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 2
    • ]. 

    Boggy grassland.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 3
    • ]. 

    Distribution

    At temperate altitudes in summer rainfall region of southern Africa and to the north in Zimbabwe, Malawi and Angola.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 2
    • ]. 

      Bibliography

    • 1 Consp. Fl. Afric.
    • 2 Hennessy, EF. 1985. The genus Scleria in southern Africa. Bothalia 15(3 & 4): 505 - 530.
    • 3 Herman, PPJ; Retief, E. 1997. Plants of thenorthern provinces of South Africa: keys and diagnostic characters. Strelitzia 6: 1 - 681. National Botanical Institute, Pretoria.

     Information From

    Cyperaceae
    • A CC0 1.0 Universal (CC0 1.0).
    e-Flora of South Africa
    e-Flora of South Africa. v1.21. 2018. South African National Biodiversity Institute. http://ipt.sanbi.org.za/iptsanbi/resource?r=flora_descriptions&v=1.21
    • B All Rights Reserved
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • C CC0 1.0 Universal (CC0 1.0).