e-Key <span id="jodit_selection_marker_1710151972757_342029016705903" data-jodit_selection_marker="start" style="line-height: 0; display: none;"></span>v3 - G<span id="jodit_selection_marker_1710151972757_46587743706620377" data-jodit_selection_marker="end" style="line-height: 0; display: none;"></span>reyia
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Interactive keys to the identification of seed plants of southern Africa using keys based on plant morphology.

Greyiaceae - Greyia Hook. & Harv.

Description:

  • Shrubs or small trees, with soft wood; ends of branchlets comparatively thick
  • Leaves alternate, crowded apically, petiolate, simple, subrotund, irregularly crenate, lobed; petiole sheathing; venation ± palmate at base; stipules 0
  • Flowers bisexual, regular, showy, in terminal, pedunculate racemes; bracts small, lanceolate
  • Calyx 5-partite, persistent; segments oblong, imbricate
  • Petals 5, free, longer than sepals, oblong, glandular-ciliate, imbricate, red, rarely white
  • Disc fleshy, basin-shaped, 10-lobed, with lobes alternating with filaments and with a large gland at apex, or disc of 8 large, oblong structures lobed at apex and without glands
  • Stamens 10, in 2 rows, inserted between disc and ovary, longer than petals; filaments subterete; anthers 2-thecate, with longitudinal dehiscence
  • Ovary superior, 5-locular, oblong, deeply 5-grooved; ovules many, on parietal placentas; style simple
  • Fruit a 5-grooved, septicidal capsule
  • Seeds many, minute, elongated; endosperm copious
  • x = 16

Nomenclature:

  • Greyia Hook. & Harv.
    • Hooker & Harvey: 138, t. 13 (1859)
    • Harvey: 308 (1862) in Saxifragaceae
    • Dahlgren & Van Wyk: 29 (1988)

Distribution & Notes:

  • Southern Africa: Species 3, Northern Province, Mpumalanga, KwaZulu-Natal and Eastern Cape (mainly Drakensberg and Mpumalanga escarpments)

References:

  • DAHLGREN, R. & VAN WYK, A.E. 1988. Structures and relationships of families endemic to or centered in southern Africa. Monographs in Systematic Botany from the Missouri Botanical Garden 25
  • HARVEY, W.H. 1862. Saxifragaceae. Flora capensis 2
  • HOOKER, J.D. & HARVEY, W.H. 1859. Proceedings of Dublin University Zoology & Botany Association 1