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Species profile—Caustis blakei subsp. macrantha


Plantae (plants) → Equisetopsida (land plants) → CyperaceaeCaustis blakei subsp. macrantha

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Species details

Plantae (plants)
Equisetopsida (land plants)
Scientific name
Caustis blakei subsp. macrantha M.E.Johnst. & J.H.Webber
WildNet taxon ID
Alternate name(s)
koala fern
Nature Conservation Act 1992 (NCA) status
Conservation significant
Pest status
Short Notes
(dup-AQ 597234-Holotype)(probably still at Gatton College, Jul 2000)
Caustis blakei has rigid, erect, smooth stems up to 2m tall and 2.5-5.0mm in diameter. Mature leaves are reduced to dark brown, pointed scales. There are 10-18 vegetative nodes per stem, each having 1-6 lateral branches. The young flowering branches are short, narrow and wavy.
There are several to many flowering spikelets per inflorescence. Each spikelet is usually single-flowered and 6-11mm long. The mature fruit is dark brown to black and 6-9mm long, including a beak.
Caustis blakei subsp. macrantha has larger spikelets and fruit than the similar Caustis blakei subsp. blakei. (Johnston et al. 1997)
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Caustis blakei subsp. macrantha is found inland near Murphy's Creek and Helidon in south-eastern Queensland. Earlier records of this species are from Fernvale and Gatton, in the same inland area. The other subspecies, Caustis blakei subsp. blakei, is the more widespread coastal population, found from Toolara near Maryborough in Queensland, to Crowdy Bay, New South Wales and on the major islands off south-east Queensland. (Johnston et al. 1997; Herbrecs 2008)
Distributional limits
-27.3088687, 152.087188
-27.50237, 152.3115084
Range derivation
Range derived from extent of the taxon's verified records
Caustis blakei subsp. macrantha inhabits tall open eucalypt forests with a sparse canopy, on sandstone ridges and soils derived from weathered sandstone. (Johnston et al. 1997)
Caustis blakei subsp. macrantha is fire sensitive and regenerates from seed stored in the soil. (Johnston et al. 1997)
Contributors: Ron Booth, Mellisa Mayhew 16/02/2009
Herbrecs (2008). Caustis blakei subsp. macrantha, in BriMapper version 2.12. Queensland Herbarium. Accessed 26/09/2008.
Johnston, M.E., Swarbrick, J.T., Wearing, A.H. & Webber, J.H. (1997). A new subspecies of Caustis blakei Kuk. in Queensland. Austrobaileya 4(4): 615-7.
Profile author
Tom Mumbray (16/02/2009)

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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Creative Commons Attribution 4.0 International (CC BY 4.0)
Last updated
8 March 2022
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