e-Key <span id="jodit_selection_marker_1699430917671_5589761735812735" data-jodit_selection_marker="start" style="line-height: 0; display: none;"></span>v3 - Hexa<span id="jodit_selection_marker_1699430917672_008795413873406988" data-jodit_selection_marker="end" style="line-height: 0; display: none;"></span>lobus
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Interactive keys to the identification of seed plants of southern Africa using keys based on plant morphology.

Annonaceae - Hexalobus A.DC.

Description:

  • Trees or shrubs, with simple hairs
  • Leaves petiolate, often ± elliptic-oblong
  • Inflorescences 2- or 3-flowered fascicles, axillary or supra-axillary or flowers solitary
  • Flowers bisexual, sessile or shortly pedicellate, bracteolate; bracteoles 2-several, biseriate, caducous
  • Sepals 3, free, coriaceous, ovate, valvate, enclosing petals in bud, with margins not or scarcely bent outwards, densely brown- or fawn-pubescent
  • Petals 6, slightly imbricate, in 2 whorls, equal or subequal, connate at base into a small tube, valvate, transversely folded in bud, expanding and spreading at anthesis
  • Stamens many; anthers linear or linear-cuneate; connective thickened and truncate above thecae
  • Carpels 2 or 3, villous; ovules many, in 1 row; style very short; stigma 2-lobed, with lobes oblong or dilated
  • Monocarps indehiscent, succulent, cylindrical or ellipsoid, usually not or scarcely constricted, subsessile
  • Seeds horizontal; aril absent

Nomenclature:

  • Hexalobus A.DC.
    • Candolle: 212 (1832)
    • Oliver: 26 (1868)
    • Prantl: 36 (1891)
    • Engler & Diels: 55 (1901)
    • Robson: 116 (1960)
    • Paiva: 61 (1966)
    • Roessler & Schreiber: 2 (1968)
    • Le Thomas: 81 (1969)
    • Van Setten & Maas: 682 (1990)
    • Kessler: 113 (1993)

Distribution & Notes:

  • Global: Species 5, tropical Africa from Senegal to Sudan and southwards to southern Africa, 1 dubiously placed species (climber) recorded from Madagascar
  • Southern Africa: Species 1: Hexalobus monopetalus (A.Rich.) Engl. & Diels, Namibia, Botswana and Northern Province

References:

  • CANDOLLE, A.L.P.P. DE. 1832. Mémoire sur la famille des Anonacées, et en particulier sur les espèces du pays des Birmans. Mémoires de la Société de Physique et d'Histoire Naturelle de Genève 5
  • ENGLER, A. & DIELS, L. 1901. Annonaceae. In A. Engler, Monographien afrikanischer Pflanzenfamilien und Gattungen 6. Engelmann, Leipzig
  • KESSLER, P.J. A.1993. Annonaceae. In K. Kubitzki, J.G. Rohwer & V. Bittrich, The families and genera of vascular plants - dicotyledons 2. Springer-Verlag, Berlin
  • LE THOMAS, A. 1969. Annonaceae. Flore du Gabon 16
  • OLIVER, D. 1868. Anonaceae. Flora of tropical Africa 1
  • PAIVA, J.A.R. 1966. Revisão das Annonaceae de Angola. Memórias da Sociedade Broteriana 19
  • PRANTL, K. 1891. Anonaceae. Die natürlichen Pflanzenfamilien III,2
  • ROBSON, N.K.B. 1960. Annonaceae. Flora zambesiaca 1
  • ROESSLER, H. & SCHREIBER, A. 1968. Annonaceae. Prodromus einer Flora von Südwestafrika 34
  • VAN SETTEN, A.K. & MAAS, P.J.M. 1990. Studies in Annonaceae XIV. Index to generic names of Annonaceae. Taxon 39

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