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Species profile—Macrozamia occidua


Plantae (plants) → Equisetopsida (land plants) → ZamiaceaeMacrozamia occidua

Photo of Macrozamia occidua () - Forster, P.,Queensland Herbarium, DES (Licence: CC BY NC)
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Species details

Plantae (plants)
Equisetopsida (land plants)
Scientific name
Macrozamia occidua D.L.Jones & P.I.Forst.
WildNet taxon ID
Nature Conservation Act 1992 (NCA) status
Environment Protection and Biodiversity Conservation Act 1999 (EPBC) status
Conservation significant
Pest status
Short Notes
Gymnosperm, three sheets plus carpological
Macrozamia occidua is a small cycad with a non-branching underground stem 10-20 cm diameter and a crown of 1-5 erect leaves 40-75cm long. Each leaf has 80-120 leaflets arranged on a spirally twisted (2-4 times) rhachis (central stalk). The leaflets are 6-20cm long, 3-10mm wide, dark green and dull above and grey-green below, the apex sometimes with 2 or 3 teeth, the base a greenish-yellow to yellow, rarely pink callous.
The male and female cones occur on separate plants. The male cones are cylindrical, 10-24cm long and 3.5-5cm in diameter. The female cones are ovoid (egg-shaped), 10-14cm long and 5-7cm in diameter. The seeds are ovoid (egg-shaped), 18-25mm long and 15-20mm wide, orange to red when ripe.
Macrozamia occidua is similar to M. cranei but can be distinguished by the shorter, dull leaflets. (Jones & Forster 1994; Hill 1998; DEWHA 2008)
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Macrozamia occidua occurs on slopes in dry woodland and open forest, between the altitudes of 800-1000m above sea level. It grows on skeletal sandy soils and granite. (DEWHA 2008)
Young seedlings and surface seed are killed by fire. (DEWHA 2008)
Macrozamia occidua cones mature between September to January. The seeds become ripe between February and April. (Jones & Forster 1994)
Management documents
Conservation and management of protected plants in trade in Queensland 1995-1998. Department of Environment.
Contributors: Ailsa Holland, Mellisa Mayhew 18/06/2009
Department of the Environment, Water, Heritage and the Arts (2008). Macrozamia occidua in Species Profile and Threats Database, Department of the Environment, Water, Heritage and the Arts, Canberra. Accessed 08/10/2008.
Herbrecs (2008). Macrozamia occidua, in BriMapper version 2.12. Queensland Herbarium. Accessed 08/10/2008.
Hill, K.D. in McCarthy, P.M. (Ed) (1998). Flora of Australia 48: 656.
Jones, D.L. & Forster, P.I. (1994). Seven new species of Macrozamia section Parazamia (Miq.) Miq. (Zamiaceae section Parazamia) from Queensland. Austrobaileya 4(2): 278-279.
Profile author
Ailsa Holland (18/06/2009)

Other resources

Data source

This profile data is sourced from the QLD Wildlife Data API using the Get species by ID function used under CC-By 4.0.

This information is sourced from the WildNet database managed by the Queensland Department of Environment and Science.

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Last updated
20 May 2024