Acacia sclerosperma

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Limestone wattle
Scientific classification edit
Kingdom: Plantae
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Fabales
Family: Fabaceae
Clade: Mimosoideae
Genus: Acacia
A. sclerosperma
Binomial name
Acacia sclerosperma

Acacia sclerosperma, commonly known as limestone wattle or silver bark wattle, is a tree in the family Fabaceae. Endemic to Western Australia, it occurs on floodplains and along water-courses throughout the arid north-west corner of the State.

Limestone wattle grows as a spreading, tall shrub up to four metres high and six metres wide. Like most Acacia species, it has phyllodes rather than true leaves; these are bright green, oval in cross-section, and may be up to seven centimetres long. The flowers are yellow, and held in cylindrical clusters about five millimetres in diameter; the pods are up to 14 centimetres long, with constrictions between the seeds.centimetres wide.

There are two subspecies: Acacia sclerosperma subsp. sclerosperma and Acacia sclerosperma subsp. glaucescens. The latter is commonly known as billy blue, and is currently considered under threat, though not yet endangered.


  • "Acacia sclerosperma". Flora of Australia Online. Department of the Environment and Heritage, Australian Government.
  • "Acacia sclerosperma". FloraBase. Western Australian Government Department of Parks and Wildlife.
  • Mitchell, A. A.; Wilcox, D. G. (1994). Arid Shrubland Plants of Western Australia (Second and Enlarged ed.). Nedlands, Western Australia: University of Western Australia Press. ISBN 978-1-875560-22-6.