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

Restionaceae - Restio Rottb.

Description :

  • Plants caespitose or tangled
  • Rhizomes rarely present
  • Culms terete, compressed or 4-sided, generally branching
  • Leaf sheaths persistent, convolute, ± mucronate or aristate, rarely prolonged into a foliaceous mucro
  • Male inflorescence similar to female, or very different, often with smaller spikelets, usually with more bracts fertile
  • Male spikelets usually many, in paniculate or spicate cymes, occasionally solitary and terminal, usually with many florets, each with a spathe or sheath at its base; bracts usually many and imbricate, few to many fertile; perianth of 4 or 6 segments in 2 series, usually compressed, sometimes 3-sided; segments generally unequal, rigid or membranous; outer lateral ones conduplicate, boat-shaped, often villous and keeled; anterior segments flattened or rounded; inner usually smaller, thinner and flattened; stamens exserted from florets at anthesis, anthers oblong, apiculate or muticous; ovary rudimentary or 0
  • Female inflorescence similar to male, or very different, often with larger spikelets; spikelets 1-many, variously arranged; spathes generally smaller than spikelets, sometimes much larger
  • Female spikelets : bracts various, usually several, occasionally 1 fertile, usually with some sterile bracts at base; perianth segments osseous, outer lateral ones keeled, keels often woolly; staminodes well developed; ovary 1-3-locular, styles 3, plumose, exserted from bracts at anthesis
  • Fruit capsular, compressed, 3-sided, (1)2- or 3-seeded; seeds rough with various raised patterns or smooth
  • x = 7, 11, 12 (polyploidy)

Nomenclature:

  • Restio Rottb.
    • Rottbøll: 9 (1772) name conserved
    • Masters: 61 (1897)
    • Pillans: 210 (1928) in part
    • Linder: 437 (1985)
    • Linder: 251 (1991)

Distribution & Notes:

  • Global : Species ± 150, southern Africa, tropical Africa and Australia
  • Southern Africa : Species ± 89, mainly Western Cape, also extending to Northern Cape (Namaqualand), Eastern Cape and reaching KwaZulu-Natal

References:

  • LINDER, H.P. 1985. Conspectus of the African species of Restionaceae . Bothalia 15
  • LINDER, H.P. 1991. A review of the southern African Restionaceae . Contributions from the Bolus Herbarium 13
  • MASTERS, M.T. 1897. Restiaceae . Flora capensis 7
  • PILLANS, N.S. 1928. The African genera and species of Restionaceae . Transactions of the Royal Society of South Africa 16
  • ROTTBØLL, C.F. 1772. Descriptiones plantarum rariorum . N. Möller, Copenhagen