Acaena caesiiglauca
Acaena caesiiglauca | |
---|---|
![]() | |
Scientific classification ![]() | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Clade: | Rosids |
Order: | Rosales |
Family: | Rosaceae |
Genus: | Acaena |
Species: | A. caesiiglauca
|
Binomial name | |
Acaena caesiiglauca (Bitter) Bergmans
|

Acaena caesiiglauca (common name: bidibid,[1] glaucous pirri-pirri-bur,[2] or silver-leafed New Zealand burr) is a species of Acaena endemic to New Zealand.[3]
Taxonomy and etymology
The species was described in 1988 by C.J. Webb, W.R. Sykes, and P.J. Garnock-Jones.[4] The original combination was Acaena sanguisorbae subsp. caesiiglauca Bitter.[4]
The specific epithet, caesiiglauca, is derived from a combination of Latin meaning ‘lavender blue’ and Greek meaning ‘sea green’.[3]
Description
Aceana caesiiglauca grow to a height of 2–4 inches and a spread of about 2 ft. The flowers consist of reddish burrs and its foliage is described as a silky bluish grey.[5]
Ecology
A. caesiiglauca grows in tussock grassland between 600 and 1500 m.[6] It reproduces by dispersing its hypanthia, which are spiny and attach to animals in its environment. They may also be dispersed by wind or being eaten.[3]
Distribution
A. caesiiglauca grows in the South Island where it is widespread but tends to grow east of the Southern Alps.[6] Herbarium specimens have been collected in Nelson, Canterbury, Otago and Southland.[1]

References
- ^ a b "Acaena caesiiglauca (Bitter) Bergmans". Biota of New Zealand. Archived from the original on 11 May 2024. Retrieved 8 August 2025.
- ^ BSBI List 2007 (xls). Botanical Society of Britain and Ireland. Archived from the original (xls) on 26 June 2015. Retrieved 17 October 2014.
- ^ a b c "Acaena caesiiglauca". New Zealand Plant Conservation Network. Retrieved 8 August 2025.
- ^ a b Colin Webb; William Russell Sykes; Phil Garnock-Jones (1988), Flora of New Zealand Volume IV, Manaaki Whenua – Landcare Research, Wikidata Q134194200
- ^ Susan Carter, Carrie Becker, Bob Lilly: Perennials: The Gardener's reference, page 34. Timber Press, 2007
- ^ a b Alan Mark (2021). Above the Treeline: A nature guide to alpine New Zealand (2nd ed.). Nelson: Potton & Burton. ISBN 978-1-988550-11-4. OL 47320389M. Wikidata Q110256364.
External links

- "Acaena caesiiglauca (Bitter) Bergmans". Atlas of Living Australia.