e-Key <span id="jodit_selection_marker_1703144228080_6838968873817459" data-jodit_selection_marker="start" style="line-height: 0; display: none;"></span>v3 - Geissolomat<span id="jodit_selection_marker_1703144228080_7818865224142832" data-jodit_selection_marker="end" style="line-height: 0; display: none;"></span>aceae
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Interactive keys to the identification of seed plants of southern Africa using keys based on plant morphology.

DICOTYLEDON - ROSIDAE - CELASTRALES - Geissolomataceae

Compiled by C.L. Bredenkamp

Description:

  • Xeromorphic, evergreen shrublets or shrubs with somewhat 4-angled branchlets
  • Leaves decussate, simple, subsessile, cordate-ovate, silky when young, glabrescent; stipules petiolar, minute
  • Flowers bisexual, regular, 4-merous, in short, much-branched, bracteate, axillary racemes along upper twigs; bracts 4 or 6, 2 lowest smallest, persistent; axillary bracteoles sometimes present
  • Perianth 4-partite, persistent, rose-coloured; segments imbricate, 2 outer clasping the inner
  • Stamens 8, arising from base of perianth and slightly shorter than it; filaments linear; anthers elliptic, dorsifixed, versatile, 2-thecous, bilobed at base
  • Ovary superior, 4-locular, narrowly 4-winged, with 2 collateral, pendulous ovules in each locule, rarely 1 ovule aborted; styles 4, twisted at base, narrowed and cohering upwards, longer than ovary; stigmas small
  • Fruit a 4-locular capsule, dehiscing by 4 longitudinal sutures on wings of locules
  • Seed single in each locule, whitish, smooth, shiny, with brittle testa

Nomenclature:

  • Geissolomataceae
    • Jussieu: 15 (1846)
    • Stephens: 98 (1915)
    • Dahlgren & Rao: 207 (1969)

Distribution & Notes:

  • Southern Africa: Genus 1, species 1, Western Cape

References:

  • DAHLGREN, R. & RAO, V.S. 1969. A study of the family Geissolomataceae. Botaniska Notiser 122
  • JUSSIEU, A. DE. 1846. Sur la famille des Pénaeacées. Annales des sciences naturelles sér. 3 Botanique 6
  • STEPHENS, E.L. 1915. Geissolomaceae. Flora capensis 5,2

Resources:

  • Geissolomataceae genus: Geissoloma