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

DICOTYLEDON - ROSIDAE - ROSALES - Crassulaceae

Compiled by L.L. Dreyer & A.M. Makwarela

Description :

  • Herbs, undershrubs or shrubs, sometimes treelets, rarely aquatics, usually succulent
  • Leaves opposite, in whorls or spirally arranged, simple, usually entire or crenate, rarely lobed, often in basal rosettes, often with hydathodes (water-excreting pores); stipules 0
  • Flowers bisexual, regular (except in Tylecodon grandiflorus), usually in terminal thyrses, sometimes solitary
  • Calyx : sepals 4 or 5(-12), free or ± united, persistent
  • Corolla : petals 4 or 5(-12), free or ± united, as many as sepals, persistent
  • Stamens 8 or 10(-12), usually twice as many as sepals, at one or two levels; filaments arising from base of petals or on corolla tube; anthers 2-thecous, introrse to lateral, with longitudinal slits
  • Squamae (nectary scales/glands) 1 at base of each carpel
  • Carpels as many as calyx lobes, usually free or almost so, each gradually tapering into a style; ovules few to many on the adaxial suture; stigma simple, usually terminal
  • Fruit usually a head of free follicles often enclosed by dry petals
  • Seeds small; endosperm present

Nomenclature:

  • Crassulaceae
    • Harvey: 327 (1862)
    • Keay: 114 (1954)
    • Friedrich: 1 (1968)
    • Tölken: 1 (1985)

Distribution & Notes:

  • Global : Genera ± 33, species over 1500, cosmopolitan (excluding Australia and western Pacific), with centres in southern Africa and Central America
  • Southern Africa : Genera 6 (1 exotic), species 234 (1 exotic)

References:

  • FRIEDRICH, H. 1968. Crassulaceae . Prodromus einer Flora von Südwestafrika 52
  • HARVEY, W.H. 1862. Crassulaceae . Flora capensis 2
  • KEAY, R.W.J. 1954. Crassulaceae . Flora of west tropical Africa , 2nd edn 1,1
  • TÖLKEN, H.R. 1985. Crassulaceae . Flora of southern Africa 14