Ranunculus Inundatus



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Electronic Flora of South Australia species Fact Sheet

Ranunculus Inundatus Aquarium

Family: Ranunculaceae

Citation: R. Br. ex DC., Reg. Veg. Syst. Nat. 1:269 (1817).

Synonymy: Ranunculus rivularis

Common name: River-buttercup.

Description:
Perennial herb, 5-30 cm high, stoloniferous; basal leaves palmatisect, 1-4 cm wide, with segments 0.5-2 mm wide, glabrous; petioles 1-15 cm long, glabrous or with a few flexible hairs; basal sheaths more or less pilose; cauline leaves palmatisect to trisect.
Flowering stems slender, erect, with 1-3 flowers, glabrous or pilose at the base; vegetative stems creeping, rooting at the nodes; flowers 1-1.5 cm diam.; sepals 5, elliptic to almost round, concave, glabrous; petals 5-7, narrowly obovate to oblanceolate-elliptic, apex rounded; nectary very near the base, with a semicircular to tongue-shaped lobe to 1 mm long, its lateral margins attached for the lower one-third to half its length; stamens c. 25-30; carpels c. 20-30.
Mature achenes almost lenticular, c. 1.5-1.8 mm long; beak reflexed, about half to two-thirds as long as achene-body; lateral faces with obscure irregular warty ridges and a broad flattened area at the base of the style; torus with a dense ring of short hairs in the staminal zone, glabrous between the achenes.

Ranunculus inundatus
Image source: fig 197b in Jessop J.P. & Toelken H.R. (Ed.) 1986. Flora of South Australia (4th edn).

Published illustration:Cunningham et al. (1982) Plants of western New South Wales, p. 309.

Distribution: Usually grows in shallow water with the leaves floating or submerged.

S.Aust.: MU, SL, SE. Qld; N.S.W.; Vic.; Tas.

Conservation status: native

Flowering time: Sept. — Jan.


SA Distribution Map based
on current data relating to
specimens held in the
State Herbarium of South Australia

Biology:No text

Author:Not yet available


Ranunculus Inundatus

LIVE AQUARIUM PLANT: Ranunculus Inundatus Aka. River Buttercup, can be used as foreground or midground in aquarium. IMPROVE WATER CLARITY: Under proper conditions, Anubias will provide Oxygen bubble which is called perling also, reducing algae growth. Ranunculus inundatus is an attractive new plant native to Southeastern Australia. Ranunculus species, or buttercups, are widespread in wet areas all over the world (including North America) but R. Inundatus is one of the relatively few that grows submersed.

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