Family:
Cycadaceae Pers.

Cycas L.

This genus is accepted, and its native range is Kenya to Mozambique and W. Pacific.

[FTEA]

Gymnospermae, R. Melville. Flora of Tropical East Africa. 1958

Morphology General Habit
Shrubs or trees with simple, rarely branched, trunks clothed with woody leaf bases and bearing a crown of pinnate leaves
Morphology Leaves
Leaflets linear, entire, 1-nerved
sex Male
Scales of the male cones wedge-shaped, often long acuminate, closely imbricate, with ellipsoid pollen-sacs in groups of 3–5 on the lower surface
Morphology Reproductive morphology Cones
Female blades crowded round the stem apex, densely woolly at first, later spreading, elongated, widening upwards, with 1–5 pairs of erect ovules in marginal notches Scales of the male cones wedge-shaped, often long acuminate, closely imbricate, with ellipsoid pollen-sacs in groups of 3–5 on the lower surface
sex Female
Female blades crowded round the stem apex, densely woolly at first, later spreading, elongated, widening upwards, with 1–5 pairs of erect ovules in marginal notches
Morphology Reproductive morphology Seeds
Seeds ellipsoid or globose.

Native to:

Aldabra, Andaman Is., Assam, Bangladesh, Bismarck Archipelago, Borneo, Cambodia, Caroline Is., China South-Central, China Southeast, Christmas I., Comoros, East Himalaya, Fiji, Gilbert Is., Hainan, Haiti, India, Japan, Jawa, Kenya, Laos, Lesser Sunda Is., Madagascar, Malaya, Maluku, Marianas, Marshall Is., Mozambique, Myanmar, Nansei-shoto, Nepal, New Caledonia, New Guinea, Nicobar Is., Northern Territory, Philippines, Queensland, Samoa, Solomon Is., Sri Lanka, Sulawesi, Sumatera, Taiwan, Tanzania, Thailand, Tonga, Tuvalu, Vanuatu, Vietnam, Western Australia

Introduced into:

Alabama, Mauritius, Niue, Rodrigues, Réunion

Cycas L. appears in other Kew resources:

First published in Sp. Pl.: 1188 (1753)

Accepted by

  • Govaerts, R. (1999). World Checklist of Seed Plants 3(1, 2a & 2b): 1-1532. MIM, Deurne.
  • Lindstrom, A.J., Hill, K.D. & Stanberg, L.C. (2009). The genus Cycas (Cycadaceae) in Indonesia Telopea 12: 385-418.

Literature

Flora of Tropical East Africa

  • Sp., Pl : 1188 (1753)

  • Flora of Tropical East Africa

    Flora of Tropical East Africa
    http://creativecommons.org/licenses/by-nc-sa/3.0

  • Interactive Key to Seed Plants of Malesia and Indo-China

    The Malesian Key Group (2010) Interactive Key to Seed Plants of Malesia and Indo-China (Version 2.0, 28 Jul 2010) The Nationaal Herbarium Nederland Leiden and The Royal Botanic Gardens Kew

  • Kew Backbone Distributions

    The International Plant Names Index and World Checklist of Selected Plant Families 2022. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

  • Kew Names and Taxonomic Backbone

    The International Plant Names Index and World Checklist of Selected Plant Families 2022. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0