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

Cyperaceae - Cyperoideae - Cypereae - Volkiella Merxm. & Czech

Description :

  • Annuals, small, tufted
  • Culms setaceous, 0-25 mm tall, with basal nodes
  • Leaves basal, eligulate; sheath closed, with adaxial apex truncate; blade without keeled midrib, profile crescentiform
  • Inflorescence capitate, of 2-4 spikes; subtending bracts erect, very long
  • Spikes 5-6 mm long, 3.5 mm broad, laterally compressed; spikelet bracts 9-11, ± distichous, 2.5-4 mm long, produced into an awn 1-7 mm long
  • Spikelets comprising adaxial coriaceous prophyll and abaxial hyaline glume; glume subtending a single usually bisexual floret
  • Perianth 0
  • Stamens 2
  • Style short, branches 3, 2-3 times as long as nutlet
  • Nutlet yellow-brown, obovate, trigonous, 1 mm long, papillose

Nomenclature:

  • Volkiella Merxm. & Czech
    • Merxmüller & Czech: 318 (1953)
    • Podlech: 52 (1967)
    • Hooper: 945 (1986)

Distribution & Notes:

  • Southern Africa : Species l: Volkiella disticha Merxm. & Czech, Namibia; also in south tropical Africa

References:

  • HOOPER, S.S. 1986. Volkiella ( Cyperaceae ), a specialised cyperoid genus re-examined. Kew Bulletin 41
  • MERXMÜLLER, H. & CZECH, G. 1953. Eine neue Gattung der Cyperaceen. Mitteilungen der Botanischen Staatssammlung München 1
  • PODLECH, D. 1967. Cyperaceae . Prodromus einer Flora von Südwestafrika 165