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Cycas thouarsii R.Br.
Prodr. Fl. Nov. Holland. 347 (1810)
Family: CYCADACEAE

Cycas thouarsii Photo by: Josef Cycad Perner

Synonyms:

See all synonyms of Cycas thouarsii
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Accepted name in llifle Database:
Cycas thouarsii R.Br.
Prodr. Fl. Nov. Holland. 347 (1810)
Synonymy: 9
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Common Names include:
ENGLISH: Madagascar Cycad, African Cycas
CZECH (Čeština): Cykas Thouarsův

Subspecies, varieties, forms and cultivars of plants belonging to the Cycas rumphii complex

The C. rumphii complex comprises a number of related taxa which have sometimes been considered conspecific. Differences between these taxa lie mainly in the shape and indentation of the lamina of the megasporophylls.

  • Cycas circinalis L.: has leaflets not more than 13 mm broad, non-pepectinate megasporophyll with large lamina. Microsporophyll apex attenuate, reflexed. Distribution: southern India.
  • Cycas glauca Miq.
  • Cycas micronesica K.D.Hill
  • Cycas rumphii Miq.: has broad, falcate, hard, glossy leaflets with relatively broad bases, usually wholly spinescent petiole, and narrowly triangular megasporophyll lamina with a slender apical spine. Distribution: Indonesia, S. Borneo ans along the north coast of Papua New Guinea.
  • Cycas thouarsii R.Br.: has distinctly bluish new leaves with wholly spinescent petioles and the pronounced stout spines on the microsporophylls. Seeds do not have a crested sclerotests. Distribution: Madagascar, the Comoros Islands, Mayotte and the Seychelles. Scattered occurrences are also known on the East Coast of Africa from Tanzania throughout Kenya south the Mozambique.
  • Cycas zeylanica (J.Schust.) A.Lindstr. & K.D.Hill

25231 josef Josef Cycad Perner
Cycas thouarsii, male cone. Photo by: Josef Cycad Perner
25246 josef Josef Cycad Perner
Cycas thouarsii seeds Photo by: Josef Cycad Perner

25279 josef Josef Cycad Perner
Cycas thouarsii, Receptive Female. Photo by: Josef Cycad Perner
25280 josef Josef Cycad Perner
Cycas thouarsii, Receptive Female. Photo by: Josef Cycad Perner


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