Ranunculus glabrifolius
Common names
waoriki
Biostatus
Native
Category
Vascular
Structural class
Herbs - Dicotyledons other than Composites
Flower colours
Yellow
Detailed description
Perennial with rosettes tufted along a slender creeping rhizome usually with swollen nodes. Basal leaves on slender erect or ascending petioles 50-150(-250) mm long; lamina trifoliolate to palmatisect, usually with at least 1-2 hairs, sometimes more, ± circular, or slightly broader than long, 10-30(-50) mm diameter; leaflets sessile, divided again to at least ½ way, sometimes again toothed, ± equal, the lateral leaflets sometimes divided to base; leaves of flowering stems smaller with 1-3 linear, acute, entire segments. Flowering stems erect to c.300 mm long (rarely sessile), 1-3(-5)-flowered, usually appressed-hirsute. Flowers 12-15(-20) mm diameter; pedicels glabrous. Sepals ± recurved, glabrous or hairy. Petals 5-10(-15), 5-11 mm long, golden yellow, oblanceolate to obovate, shortly clawed; nectary single, 1-2 mm from petal base, pocket-like. Receptacle glabrous. Achenes 5-20, hardly flattened, glabrous; body 2.0-2.5 mm long; style straight or curved, 1.5-2.0 mm long.
Similar taxa
Superficially similar to R. amphitrichus from which it is only reliably distinguished in the field by the receptacle which is completely glabrous rather than furnished with a basal collar of bristly hairs.
Distribution
Indigenous. New Zealand (North, South, Stewart and Chatham Islands). Also Australia.
Habitat
Coastal to montane. Often partially submerged in shallow water, wet grassland and lake, pond or tarn marginal turf communities. Sometimes in moist clearings within forest or tussock grassland.
Current conservation status
The conservation status of all known New Zealand vascular plant taxa at the rank of species and below were reassessed in 2022-2023 using the New Zealand Threat Classification System (NZTCS) – more information about this can be found on the NZTCS website. This report includes replaces all previous NZTCS lists for vascular plants. Previous assessments can be found here.
Please note, threat classifications are often suggested by authors when publications fall between NZTCS assessment periods – these interim threat classification statuses has not been assessed by the NZTCS panel.
- Conservation status of vascular plants in Aotearoa New Zealand, 2023. 2024. Peter J. de Lange, Jane Gosden, Shannel P. Courtney, Alexander J. Fergus, John W. Barkla, Sarah M. Beadel, Paul D. Champion, Rowan Hindmarsh-Walls, Troy Makan and Pascale Michel Department of Conservation. Source: NZTCS and licensed by DOC for reuse under the Creative Commons Attribution 4.0 International licence.
2023 | Not Threatened | Qualifiers: SO
Detailed taxonomy
Family
Ranunculaceae
Synonyms
Ranunculus rivularis var. major Benth.; Ranunculus inundatus R.Br. ex DC. p.p.; Ranunculus rivularis var. inundatus (R.Br. ex DC.) Rodway
Endemic taxon
No
Endemic genus
No
Endemic family
No
Ecology
Flowering
October - January
Fruiting
December - May
Propagation technique
Easily grown from fresh seed and by the division of whole plants. An attractive plant suitable for growing on the margin of a fish pond or slow flowing stream. It has larger and more richly coloured flowers than R. amphitrichus.
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). If you have suggestions for the Wetland Indicator Status Rating, please contact: [Enable JavaScript to view protected content]
OBL: Obligate Wetland
Almost always is a hydrophyte, rarely in uplands (non-wetlands).
Other information
Where To Buy
Not commercially available.
Etymology
ranunculus: From the Latin ‘rana’ frog, meaning little frog and probably refers to the plants typical marshy habit where frogs abound
glabrifolius: Hairless leaves
NVS code
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.
RANGLA
Chromosome number
2n = 144
Previous conservation statuses
2017 | Not Threatened | Qualifiers: SO
2012 | Not Threatened
2009 | Not Threatened
2004 | Not Threatened
Referencing and citations
Attribution
Fact sheet prepared by P.J. de Lange for NZPCN (1 June 2013)
NZPCN Fact Sheet citation
Please cite as: de Lange, P.J. (Year at time of access): Ranunculus glabrifolius Fact Sheet (content continuously updated). New Zealand Plant Conservation Network. https://www.nzpcn.org.nz/flora/species/ranunculus-glabrifolius/ (Date website was queried)