1. Cycadaceae Pers.

    1. This family is accepted.

[FZ]

Cycadaceae, John Lewis. Flora Zambesiaca 1:1. 1960

Habit
Dioecious trees or shrubs
Stem
Trunk simple or sparsely branched, covered with spirally arranged leaf-bases and scale-leaves, either up to 15 m. tall or very short and almost subterranean
Leaves
Leaves usually long and pinnate, in close spirals, forming an often wide-spreading crown on the trunk and (except in one species of Macrozamia) intercalated with leathery scale-leaves
Male
Staminate strobilus forming a terminal cone of leathery scales with numerous pollen-sacs on their abaxial surface
Cones
Female strobilus either a loose apical whorl of fronds bearing erect ovules marginally (Cycas) or a terminal cone of thick and often woody scales bearing a pair of inverted ovules adaxially Staminate strobilus forming a terminal cone of leathery scales with numerous pollen-sacs on their abaxial surface
Female
Female strobilus either a loose apical whorl of fronds bearing erect ovules marginally (Cycas) or a terminal cone of thick and often woody scales bearing a pair of inverted ovules adaxially
[FWTA]

Cycadaceae, Hutchinson and Dalziel. Flora of West Tropical Africa 1:1. 1954

Habit
Shrubs or small trees with thick, usually simple stems and a crown of pinnatisect leaves circinate in bud; leaflets often with spiny teeth
Cones
Cones dioecious Males terminal or subterminal, composed of numerous leathery or fleshy flat or peltate scales bearing on the under-surface numerous pollen-sacs Female cones similar, the scales bearing a pair of inverted nude ovules on the lower side
Male
Males terminal or subterminal, composed of numerous leathery or fleshy flat or peltate scales bearing on the under-surface numerous pollen-sacs
Female
Female cones similar, the scales bearing a pair of inverted nude ovules on the lower side
Seeds
Seeds large, drupe-like, with copious endosperm; cotyledons 2

Images

Cycadaceae Pers. appears in other Kew resources:

First published in Syn. Pl. [Persoon] 2: 630. 1807 (1807)

Sources

Flora Zambesiaca
Flora Zambesiaca
http://creativecommons.org/licenses/by-nc-sa/3.0

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

Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2019. 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