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Caustis blakei
Also called Koala, Foxtails, Koala Fern
Caustis blakei, also known as the koala fern, is a species of rhizomatous sedge in the family Cyperaceae. It is found exclusively in Australia in southeastern Queensland and northeastern New South Wales. It has rigid, smooth stems up to 2 metres (6 ft 7 in) with 10 to 28 nodes. It has two subspecies: C. blakei subsp. blakei and C. blakei subsp. macrantha, which was identified by Johnston et al. in 1997. The two subspecies differ in length of spikelets, anthers, and fruit.
Caustis blakei is found in tall eucalyptus forests with sparse or closed canopies in sandy soils or soils derived from weathered sandstone. C. blakei subsp. blakei occurs in mainland Australia from Toolara in Queensland to Crowdy Bay National Park in New South Wales, with additional populations identified on Fraser Island, Moreton Island, and Stradbroke Island. Geographically isolated, inland populations of C. blakei subsp. macrantha have been identified in Murphys Creek, Esk, and Helidon.
Caustis deserti · Caustis dioica · Curly Wig · Caustis gigas · Thick Twist Rush · Curly Sedge · Caustis
Text excerpted from the Wikipedia article Caustis blakei by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
