Acaena inermis

Acaena inermis
At Savill Garden
Flowers
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Rosales
Family:	Rosaceae
Genus:	Acaena
Species:	A. inermis
Binomial name
Acaena inermis Hook.f.
Synonyms [1]
Acaena microphylla var. inermis(Hook.f.) Kirk

Acaena inermis, the spineless acaena, is a species of flowering plant in the family Rosaceae, endemic to New Zealand and introduced to Great Britain. ^{[1] [2]} Its common names include spineless bidibid and blue mountain bidibid. ^{[3] [4]} A mat-forming perennial useful as a ground cover, its cultivar 'Purpurea' is widely available from commercial suppliers. ^{[5] [3]}

Taxonomy and etymology

The species was described in 1988 by C.J. Webb, W.R. Sykes, and P.J. Garnock-Jones. ^[6] Inermis refers to the seedhead not having spines, it being 'unarmed'. ^[3]

References

1. "Acaena inermis Hook.f." Plants of the World Online . Royal Botanic Gardens, Kew . Retrieved 27 February 2023.
2. "Acaena inermis spineless acaena". The Royal Horticultural Society. 2023. Archived from the original on 27 February 2023. Retrieved 27 February 2023. 1 suppliers
3. "Acaena inermis". New Zealand Plant Conservation Network. Archived from the original on 30 Apr 2025. Retrieved 8 Aug 2025.
4. "Acaena inermis Hook.f." Biota of New Zealand. Archived from the original on 11 May 2024. Retrieved 8 Aug 2025.
5. "Acaena inermis 'Purpurea' purple spineless acaena". The Royal Horticultural Society. 2023. Archived from the original on 27 February 2023. Retrieved 27 February 2023. 19 suppliers
6. Colin Webb; William Russell Sykes; Phil Garnock-Jones (1988), Flora of New Zealand Volume IV, Manaaki Whenua – Landcare Research, Wikidata   Q134194200