hairy buttercup, maru, maruru, kopukapuka, pirikau
Vascular – Native
Herbs - Dicotyledons other than Composites
The National Vegetation Survey (NVS) Databank is a physical archive and electronic databank containing records of over 94,000 vegetation survey plots - including data from over 19,000 permanent plots. NVS maintains a standard set of species code abbreviations that correspond to standard scientific plant names from the Ngä Tipu o Aotearoa - New Zealand Plants database.
2n = 48
Current conservation status
The threat classification status of all known New Zealand vascular plant taxa at the rank of species and below were reassessed in 2017 using the New Zealand Threat Classification System (NZTCS) – more information about this can be found on the NZTCS website This report includes a statistical summary and brief notes on changes since 2012 and replaces all previous NZTCS lists for vascular plants. Authors: By Peter J. de Lange, Jeremy R. Rolfe, John W. Barkla, Shannel P. Courtney, Paul D. Champion, Leon R. Perrie, Sarah M. Beadel, Kerry A. Ford, Ilse Breitwieser, Ines Schönberger, Rowan Hindmarsh-Walls, Peter B. Heenan and Kate Ladley. Please note, threat classifications are often suggested by authors when publications fall between NZTCS assessment periods – a suggested threat classification status has not been assessed by the NZTCS panel.
2017 | Not Threatened
Previous conservation statuses
2012 | Not Threatened
2009 | Not Threatened
2004 | Not Threatened
Endemic. New Zealand: North, South, Stewart, Chatham and Auckland Islands.
Wetland plant indicator status rating
Information derived from the revised national wetland plant list prepared to assist councils in delineating and monitoring wetlands (Clarkson et al., 2021 Manaaki Whenua – Landcare Research Contract Report LC3975 for Hawke’s Bay Regional Council). The national plant list categorises plants by the extent to which they are found in wetlands and not ‘drylands’. The indicator status ratings are OBL (obligate wetland), FACW (facultative wetland), FAC (facultative), FACU (facultative upland), and UPL (obligate upland).
FACU: Facultative Upland
Occasionally is a hydrophyte but usually occurs in uplands (non-wetlands).
Non-rhizomatous, tufted perennial, (0.1-)0.3-0.8(-1.0) m tall. Stems erect, with hairs spreading below, appressed above. Basal leaves usually pinnate, rarely 3-foliolate or 3-lobed, hairy; leaflets stalked, ovate or obovate, entire or shallowly to deeply 3-lobed, toothed, very variable in size, 10-50(-60) mm diameter. Cauline leaves similar, smaller, often merely 3-lobed; lobes narrower. Flowers 3 or more per stem, 8-15 mm diameter. Pedicels terete to sulcate, up to 300 mm long, with appressed hairs. Sepals reflexed at flowering, hairy. Petals 5, yellow, narrow-oblong to narrow-obovate; nectary single, c. 0.5 mm from petal base, covered by a small oblong scale. Receptacle hairy. Achenes 40-80-(100), in ovoid heads, small and pale, moderately flattened, glabrous; body 1.5-2.0 mm long; beak often dark, hooked, 0.7-1.0 mm.
ranunculus: From the Latin ‘rana’ frog, meaning little frog and probably refers to the plants typical marshy habit where frogs abound
reflexus: Bent backwards
Where To Buy
Not commercially available.
Description adapted from Webb et al. (1988).
References and further reading
Garnock-Jones, P.J. 1987. Orthographic Changes for Names of New Zealand Vascular Plants. New Zealand Journal of Botany 25: 115-170.
Garnock-Jones, P.J. 1990. Typification of Ranunculus names in New Zealand. New Zealand Journal of Botany 28: 115-123.
Webb, C.J.; Sykes, W.R.; Garnock-Jones, P.J. 1988. Flora of New Zealand. Volume IV. Naturalised Pteridophytes, Gymnosperms, Dicotyledons. Botany Division, D.S.I.R, Christchurch, New Zealand.