e-Key v3 - Key to Calenduleae Genera
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Interactive keys to the identification of seed plants of southern Africa using keys based on plant morphology.
  • Key compiled from genus descriptions after Nordenstam (1994)
Backtrack a
  • Fruit a drupe
Chrysanthemoides
b
  • Fruit a cypsela
002
Backtrack a
  • Style deeply bifurcate with hairs reaching below point of furcation
Garuleum
b
  • Style shallowly bifid or bilobed with short apical collar of hairs
002
Backtrack a
  • Cypselas homomorphic, rarely hetero- or dimorphic
002
b
  • Cypselas hetero- or polymorphic
002
Backtrack a
  • Ray cypselas kidney-shaped with ventral cavity
Gibbaria
b
  • Ray cypselas 3-winged with apical fenestrate airchamber; sometimes some cypselas wingless and rostrate
Tripteris
c
  • Ray cypselas straight or somewhat curved, triquetrous, 3-winged or terete or ribbed or tuberculate or with various processes; with or without apical cavities
Osteospermum
Backtrack a
  • Disc florets mostly bisexual, fertile
  • Disc cypselas laterally flattened with thickened margins
Dimorphotheca
b
  • Disc florets functionally male
002
Backtrack a
  • Outer ray cypselas cymbiform, somewhat curved, rostrate or triquetrous; inner distinctly curved, sometimes winged, sometimes annular; dorsally rugose to tuberculate-aculeate
* Calendula
b
  • Ray cypselas slightly curved and wingless or straight and 3-winged or rostrate and wingless, with or without apical cavity; smooth or rugose-aculeate
Oligocarpus
c
  • Ray cypselas straight or somewhat curved, triquetrous, 3-winged or terete or ribbed or tuberculate or with various processes; with or without apical cavities
Osteospermum

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