e-Key v3 - Ke<span id="jodit_selection_marker_1706613463631_6725361064055879" data-jodit_selection_marker="start" style="line-height: 0; display: none;"></span>y to Cact<span id="jodit_selection_marker_1706613463631_20908796312992828" data-jodit_selection_marker="end" style="line-height: 0; display: none;"></span>aceae Genera
SANBI Flora Keys Logo
Interactive keys to the identification of seed plants of southern Africa using keys based on plant morphology.
Backtrack a
  • Stems divided into flattened joints (pads)
 *Opuntia
b
  • Stems terete or winged, not flattened
 002
Backtrack a
  • Stems 3-angled
 *Hylocereus
b
  • Stems cylindrical
 002
Backtrack a
  • Branches ± terete, without longitudinal ribs
 002
b
  • Branches winged or with conspicuous longitudinal ribs
 002
Backtrack a
  • Branches tuberculate
 *Opuntia
b
  • Branches smooth
 002
Backtrack a
  • Pendulous herbs
  • Paired hooked thorns absent
  • Leaves absent
  • Flowers solitary
  • Fruit up to 10 mm in diameter
 Rhipsalis
b
  • Erect shrubs
  • Paired hooked thorns present on older parts of extension growths
  • Leaves present
  • Flowers in panicles
  • Fruit ± 20 mm in diameter
 *Pereskia
Backtrack a
  • Climbing plants
 *Harrisia
b
  • Erect trees or shrubs
 002
Backtrack a
  • Shrubs up to 1-2 m tall
  • Mature spines brown
  • Flowers white and pink
 *Echinopsis
b
  • Trees up to 5 m tall
  • Mature spines grey
  • Flowers greenish and white
 *Cereus

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