e-Key <span id="jodit_selection_marker_1707481777373_44875232255453357" data-jodit_selection_marker="start" style="line-height: 0; display: none;"></span>v3 - <span id="jodit_selection_marker_1707481777373_8656615271959456" data-jodit_selection_marker="end" style="line-height: 0; display: none;"></span>Carex
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Interactive keys to the identification of seed plants of southern Africa using keys based on plant morphology.

Cyperaceae - Cyperoideae - Cariceae - Carex L.

Description:

  • Monoecious perennials, tufted or long-rhizomatous
  • Culms with aerial or basal nodes
  • Leaves basal only, or basal and cauline, ligulate; sheath with adaxial apex truncate to U- or V-shaped; blade usually linear, flat, with or without keeled midrib, profile V-shaped, flanged V-shaped or crescentiform
  • Inflorescence spicate, glomerate-spicate to glomerate-paniculate, paniculate, or a raceme of spikes
  • Spikelets unisexual, 1-flowered, solitary in axils of glume-like bracts; male spikelet naked, female spikelet, sometimes together with vestigial rachilla, surrounded by modified prophyll (perigynium); perigynium almost closed, apex usually 2-toothed
  • Perianth 0
  • Stamens 3
  • Style 2- or 3-branched
  • Nutlet ellipsoid to obovate, biconvex or 3-angled, beaked, papillose, remaining within perigynium at dispersal
  • x = 10 (6, 7, 8, 9, 11, 13) (high aneuploids, high polyploidy)

Nomenclature:

  • Carex L.
    • Linnaeus: 972 (1753)
    • Thunberg: 14 (1794)
    • Kunth: 368 (1837)
    • Clarke: 299 (1898)
    • Clarke: 514 (1902)
    • Kükenthal: 67 (1909)
    • Schonland: 68 (1922)
    • Levyns: 130 (1950)
    • Gordon-Gray: 112 (1972)
    • Compton: 75 (1976)
    • Bond & Goldblatt: 38 (1984)
    • Forbes: 38 (1987)
    • Gordon-Gray: 36 (1995)

Distribution & Notes:

  • Global: Species ± 2 000, ± cosmopolitan in moist temperate climates and extending into arctic and antarctic regions
  • Southern Africa: Species ± 14, occurring in Northern Province, North-West, Gauteng, Mpumalanga, Free State, Swaziland, KwaZulu-Natal, Lesotho, Northern, Western and Eastern Cape, with 1 in Namibia and Botswana (not recorded in Podlech 1967) and 1 endemic to Lesotho

References:

  • BOND, P. & GOLDBLATT, P. 1984. Plants of the Cape Flora: A descriptive catalogue. Journal of South African Botany Suppl. Vol. 13
  • CLARKE, C.B. 1898. Cyperaceae. Flora capensis 7
  • CLARKE, C.B. 1902. Cyperaceae. Flora of tropical Africa 8
  • COMPTON, R.H. 1976. Cyperaceae. Flora of Swaziland. Journal of South African Botany Suppl. Vol. 11
  • FORBES, P.L. 1987. Cyperaceae. In T.K. Lowrey & S. Wright, The Flora of the Witwatersrand Vol. 1: The Monocotyledonae. Witwatersrand University Press, Johannesburg
  • GORDON-GRAY, K.D. 1972. Cyperaceae. In J.H. Ross, The Flora of Natal. Memoirs of the Botanical Survey of South Africa No. 39
  • GORDON-GRAY, K.D. 1995. Cyperaceae in Natal. Strelitzia 2
  • KÜKENTHAL, G. 1909. Cyperaceae - Caricoideae. Das Pflanzenreich 38
  • KUNTH, C.S. 1837. Enumeratio plantarum 2. J.G. Cotta, Stuttgart & Tübingen
  • LEVYNS, M.R. 1950. Cyperaceae. In R.S. Adamson & T.M. Salter, Flora of the Cape Peninsula. Juta, Cape Town
  • LINNAEUS, C. 1753. Species plantarum. Laurentius Salvius, Stockholm
  • SCHONLAND, S. 1922. Introduction to South African Cyperaceae. Memoirs of the Botanical Survey of South Africa No. 3
  • THUNBERG, C.P. 1794. Prodromus plantarum capensium. Edman, Uppsala.