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

Anacardiaceae - Rhus L.

Description :

  • Shrubs or trees, usually dioecious, rarely with bisexual flowers; sometimes armed; prominently lenticellate
  • Leaves alternate, usually 3-foliolate, entire, crenate to coarsely dentate, usually petiolate, with petiole sometimes winged
  • Flowers unisexual, very rarely bisexual, in axillary or terminal panicles, bracteate
  • Calyx (4)5(6)-partite, sometimes with segments unequal
  • Petals (4)5(6), usually inconspicuous
  • Disc usually 5(-10)-crenate
  • Male flowers : stamens 5; pistil rudimentary
  • Female flowers : staminodes usually 5; ovary 3-carpous, 1(2, 3)-locular with 1(2, 3) ovules, subglobose or compressed; styles 3, free; stigmas usually ± capitate
  • Fruit a small globoid or compressed drupe
  • Seeds reniform, exalbuminous
  • x = 15 (aneuploids, polyploidy, B-chromosomes)

Nomenclature:

  • Rhus L.
    • Linnaeus: 265 (1753)
    • Sonder: 504 (1860) in part
    • Schonland: 3 (1930)
    • Fernandes & Fernandes: 590 (1966)
    • Fernandes: 321 (1967)
    • Moffett: 1 (1993)
  • Searsia Barkley
    • Barkley: 472 (1942)

Distribution & Notes:

  • Global : Species ± 200, mostly tropical and subtropical countries
  • Southern Africa : Species ± 75, widespread in forest and scrub

References:

  • BARKLEY, F.A. 1942. A key to the genera of the Anacardiaceae . American Midland Naturalist 28
  • FERNANDES, R. & FERNANDES, A. 1966. Anacardiaceae . Flora zambesiaca 2,2
  • FERNANDES, R. 1967. Estudas nas Anacardiaceae Africanas 5. - Combinações novas no género Rhus L. e nota sobre Rh. engleri Britt. Boletim da Sociedade Broteriana , ser. 2, 39
  • LINNAEUS, C. 1753. Species plantarum . Laurentius Salvius, Stockholm
  • MOFFETT, R.O. 1993. Rhus . Flora of southern Africa 19, 3
  • SCHONLAND, S. 1930. The South African species of Rhus L. Bothalia 3
  • SONDER, O.W. 1860. Terebintaceae . Flora capensis 1