Ranunculus pachycarpus B.G.Briggs

Thick-fruit Buttercup

Proc. Linn. Soc. New South Wales 84: 301 (1960) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

Perennial, mostly c. 10–25 cm tall, with narrowly tuberiform roots. Leaves all or mostly tufted at base; petioles 1–12 cm long, with fine semi-appressed hairs; lamina deltoid to ovate in outline, c. 1–3 cm long and wide, with scattered or rather dense semi-appressed hairs, 3-lobed to trifoliolate, the segments acutely toothed or further lobed. Flowering stems erect, exceeding leaves, with spreading hairs below and appressed ones shortly below flower(s), 1–5-flowered; sepals 5, spreading, ovate to obovate, 3–7 mm long, hairy on back; petals 5, broadly obovate, 6–15 mm long, 3–10 mm wide, yellow, glossy; nectary lobe oblong to cuneate, free for c. half its length, c. 1–2 mm long overall; stamens 20–50. Achenes c. 10–20, cuneate and very plump to almost spherical or slightly squared, sometimes broadly grooved dorsally, 2.5–4 mm long, pericarp thick and spongy, smooth or obscurely ridged on sides; beak weakly curved or straight with a sharply recurved tip, 1–2 mm long; receptacle hispid between achenes, glabrous in the staminal zone. Flowers Aug.–Nov.

CVU, DunT, EGL, Gold, GGr, HNF, HSF, LoM, MuF, MuM, NIS, SnM, VAlp, VRiv, VVP, WPro, Wim. Also SA, NSW. In Victoria locally common north of the Great Dividing Range but absent from the far north-west, usually in seasonally wet soil, often shallowly overlying rock.

Close to R. robertsonii from which it is distinguished by the very plump achenes and the spreading hairs towards the base of the flowering stems.

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.
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 pachycarpus in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Ranunculus pachycarpus in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Lowan Mallee present native
Murray Mallee present native
Wimmera present native
Victorian Volcanic Plain present native
Victorian Riverina present native
Murray Fans present native
Goldfields present native
Central Victorian Uplands present native
Greater Grampians present native
Dundas Tablelands present native
Northern Inland Slopes present native
East Gippsland Lowlands present native
Wilsons Promontory present native
Highlands-Southern Fall present native
Highlands-Northern Fall present native
Victorian Alps present native
Snowy Mountains present native

State distribution

Distribution map
South Australia
New South Wales