e-Key v3 - Key to Apocynoideae Genera
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Interactive keys to the identification of seed plants of southern Africa using keys based on plant morphology.
Backtrack a
  • Leaves opposite or ternate
  • Stems woody or subherbaceous
002
b
  • Leaves alternate or fascicled
  • Stems succulent
002
Backtrack a
  • Corolla ± salver-shaped
002
b
  • Corolla tube campanulate to broadly funnel-shaped
002
Backtrack a
  • Corolla without appendages in throat
  • Leaves broadly elliptic
Holarrhena
b
  • Corolla with scales or appendages in throat
  • Leaves lanceolate, oblong or oblanceolate
002
Backtrack a
  • Woody climbers
  • Leaves oblong to oblanceolate
  • Scales in corolla throat free
Oncinotis
b
  • Trees or shrubs
  • Leaves lanceolate
  • Scales in corolla throat forming a short corona
Wrightia
Backtrack a
  • Corona absent
Baissea
b
  • Corona present
002
Backtrack a
  • Corona reduced to paired appendages alternating with corolla lobes
Strophanthus
b
  • Corona of 5 truncate epipetalous parts, each 3-8-lobed
* Nerium
Backtrack a
  • Stipules minute or absent
  • Anthers produced into long, hairy appendages
Adenium
b
  • Stipules transformed into rigid spines
  • Anthers with only a short, terminal appendage
Pachypodium

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