Ranunculus robertsonii Benth.

Slender Buttercup

Fl. Austral. 1: 10 (1863) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

Perennial, 2–25 cm tall, with narrowly tuberiform roots. Leaves all or mostly tufted at base; petioles 1–10 cm long, with fine appressed hairs; lamina ovate to deltoid in outline, c. 1–3 cm long and wide, appressed-hairy more densely on lower than upper surface, deeply ternately or biternately divided, the ultimate segments narrowly lanceolate to linear. Flowering stems erect, exceeding leaves, with appressed hairs throughout, 1–3(rarely more)-flowered; sepals 5, spreading, ovate, 3–7 mm long, appressed-hairy on back; petals 5, broadly obovate, 8–15 mm long, 4–10 mm wide, yellow, glossy, sometimes reddish on back; nectary lobe cuneate, sometimes emarginate, free for c. half its length, c. 1–2 mm long overall; stamens 30–40. Achenes c. 20–50, semicircular or c. triangular, margin thickened, faces flat to slightly biconvex, often broadly ridged or dimpled, 1.3–3 mm long, usually as wide or slightly wider; beak stout, almost straight or sharply bent near base, tapered evenly to tightly recurved apex, 1–2 mm long; receptacle hispid between achenes, glabrous in the staminal zone. Flowers Aug.–Dec.

CVU, DunT, Glep, Gold, GGr, LoM, MuM, VRiv, VVP, Wim. Also SA. Localised, but locally common in swamps, seasonally inundated depressions and moist mossy ledges and crevices overlying rock, westward from about Shepparton.

Source: Walsh, N.G. (1996). Ranunculaceae. In: Walsh, N.G.; Entwisle, T.J. (eds), Flora of Victoria Vol. 3, Dicotyledons Winteraceae to Myrtaceae. Inkata Press, Melbourne.
Updated by: Val Stajsic, 2018-12-03
Hero image
Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
superorder Ranunculanae
order Ranunculales
family Ranunculaceae
genus Ranunculus
Higher taxa


Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <http://avh.chah.org.au>. Find Ranunculus robertsonii in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Ranunculus robertsonii in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Lowan Mallee present native
Murray Mallee present native
Wimmera present native
Glenelg Plain present native
Victorian Volcanic Plain present native
Victorian Riverina present native
Goldfields present native
Central Victorian Uplands present native
Greater Grampians present native
Dundas Tablelands present native

State distribution

Distribution map
South Australia
New South Wales