1.000 Cycas L.

Fayaz, F. (2011) Encyclopedia of Tropical Plants Firefly Books, New Zealand

Description of the genus

Dioecious evergreen, mostly palm-like plants; trunk columnar, clothed with bases of fallen fronds; bark often thickened and roughened. Cataphylls prominent, alternate with the leaves, hairy; apex often rigid and spiny. Fronds borne at the apex of the trunk, 1(-3)-pinnately compound, spirally arranged, usually armed; base swollen and hairy; leaflets numerous, alternate to sub-opposite, sometimes dichotomously branched, margins usually entire. Pollen cones apical, cylindric or fusiform. Megasporophylls several to numerous, somewhat leaf-like, alternating with flushes of leaves. Seeds drupe-like, somewhat compressed, seed-coat 3-layered.

Derivation of name: from the Greek: kykas, a word found in Theophrastus, now thought to be an error for koikas meaning ‘palm trees’.

Worldwide: 116 species in East Africa, Madagascar, tropical Asia and Australia.

Zimbabwe: 4 cultivated taxa.

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Links to cultivated taxa    View: living plant images - herbarium specimen images - all images for this genus

SpeciesContent
revoluta Thunb.
siamensis Miq.
taiwaniana Carruth.
thouarsii Gaudich.Image

Other sources of information about Cycas:

Our websites:

Flora of Mozambique: Cycas

External websites:

African Plants: A Photo Guide (Senckenberg): Cycas
BHL (Biodiversity Heritage Library): Cycas
EOL (Encyclopedia of Life): Cycas
GBIF (Global Biodiversity Information Facility): Cycas
Google: Web - Images - Scholar
iNaturalist: Cycas
IPNI (International Plant Names Index): Cycas
JSTOR Plant Science: Cycas
Mansfeld World Database of Agricultural and Horticultural Crops: Cycas
Plants of the World Online: Cycas
Tropicos: Cycas
Wikipedia: Cycas

Copyright: Mark Hyde, Bart Wursten, Petra Ballings and Meg Coates Palgrave, 2002-24

Hyde, M.A., Wursten, B.T., Ballings, P. & Coates Palgrave, M. (2024). Flora of Zimbabwe: Cultivated plants: genus page: Cycas.
https://www.zimbabweflora.co.zw/cult/genus.php?genus_id=2145, retrieved 19 April 2024

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