Classification
Class
Magnoliopsida Brongn.
Order
Ranunculales Juss. ex Bercht. & J.Presl
Family
Ranunculaceae
Genus
Ranunculus L.
 Nomenclature
Scientific Name:
Ranunculus royi G.Simpson, Trans. Roy. Soc. New Zealand 79: 420 (1952)
 Description

Tufted, scapose perennial, to 15 cm tall; rhizome 0. Lvs simple, broadly ovate to orbicular, shallowly 3-lobed, bluntly toothed or crenate, hairy, 10–15–(25) × 10–18–(25) mm. Fls solitary, sessile, 10–15 mm diam. Scape elongating at fruiting, terete, hairy; hairs wavy. Sepals spreading, hairy. Petals (0)–5, yellow, narrowly obovate; nectary single, c. 1 mm from petal base, covered by a small triangular scale. Receptacle hairy. Achenes 25–35, flattened, glabrous, 2–2.5 mm long; beak curved to hooked, 0.5–1 mm long.

[From: Webb et al. (1988) Flora of New Zealand. Volume 4.]

 Biostatus
Indigenous (Endemic)
 Bibliography
de Lange, P.J.; Heenan, P.B.; Given, D.R.; Norton, D.A.; Ogle, C.C.; Johnson, P.N.; Cameron, E.K. 1999: Threatened and uncommon plants of New Zealand. New Zealand Journal of Botany 37: 603–628.
de Lange, P.J.; Norton, D.A.; Heenan, P.B.; Courtney, S.P.; Molloy, B.P.J.; Ogle, C.C.; Rance, B.D. 2004: Threatened and uncommon plants of New Zealand. New Zealand Journal of Botany 42(1): 45–76. [as Ranunculus aff. royi (CHR 513327; Waihao)]
de Lange, P.J.; Rolfe, J.R.; Barkla J.W.; Courtney, S.P.; Champion, P.D.; Perrie, L.R.; Beadel, S.N.; Ford, K.A.; Breitwieser, I.; Schönberger, I.; Hindmarsh-Walls, R.; Heenan, P.B.; Ladley, K. 2018: Conservation status of New Zealand indigenous vascular plants, 2017. New Zealand Threat Classification Series. No. 22. [Data Deficient]
de Lange, P.J.; Rolfe, J.R.; Champion, P.D.; Courtney, S.P.; Heenan, P.B.; Barkla, J.W.; Cameron, E.K.; Norton, D.A.; Hitchmough, R.A. 2013: Conservation status of New Zealand indigenous vascular plants, 2012. New Zealand Threat Classification Series 3. Department of Conservation, Wellington. [Nationally Critical; Not Threatened]
Garnock-Jones, P.J. 1990: Typification of Ranunculus names in New Zealand. New Zealand Journal of Botany 28: 115–123.
Simpson, G. 1952: Notes on some New Zealand plants and descriptions of new species (No. 5). Transactions of the Royal Society of New Zealand 79: 419–435.