Acanthocladium dockeri is a critically endangered species of the family Asteraceae that belongs to the monotypic genus Acanthocladium. It is commonly known as spiny everlasting or spiny daisy. It is native to Australia, and is found around the South Australian town of Laura.
Description The spiny everlasting is a woody perennial shrub with spines at branch ends, covered in short white hair. It bears oblong, bumpy fruit.
Spiny everlasting was presumed extinct in 1992, having suffered habitat loss from clearance for winter crops, but various colonies of it have been found around Laura, near the Spencer Gulf.
Homonym In 1883, William Mitten used the same name, Acanthocladium, to refer to a group of mosses, now in the family Sematophyllaceae.Mitten, William. 1883. Proceedings of the Linnean Society of New South Wales 7: 102 in Latin. Several dozen species of mosses were described and place in this genus before it was realized that Mittenn's name represented an illegitimate homonym.The Plant List, search for Acanthocladium The moss genus has since been renamed Wijkia H.A. Crum.Crum, Howard Alvin 1971. Nomenclatural changes in the Musci. The Bryologist 74(2): 165–174Tropicos Acanthocladium Mitt.
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