''Acaena inermis'', the spineless acaena, is a species of flowering plant in the family

Rosaceae Rosaceae (), the rose family, is a family of flowering plants that includes 4,828 known species in 91 genera. The name is derived from the type genus '' Rosa''. The family includes herbs, shrubs, and trees. Most species are deciduous, but som ...

, endemic to New Zealand and introduced to Great Britain. A mat-forming perennial useful as a

ground cover Groundcover or ground cover is any plant that grows low over an area of ground, which protects the topsoil from erosion and drought. In a terrestrial ecosystem, the ground cover forms the layer of vegetation below the shrub layer known as the ...

, its cultivar 'Purpurea' is widely available from commercial suppliers.

References

inermis Endemic flora of New Zealand Garden plants of New Zealand Flora of the North Island Flora of the South Island Plants described in 1852 {{NewZealand-plant-stub