Seeds of South Australia
Ranunculus papulentus (Ranunculaceae)
Large River Buttercup
List of species for Ranunculus
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Seed collecting:
February to April
Herbarium regions:
Murray, Southern Lofty, South Eastern
NRM regions:
Adelaide and Mount Lofty Ranges, South Australian Murray-Darling Basin, South East
IBRA regions
Bridgewater (NCP01)Naracoorte Coastal Plain
 Endangered   (IUCN: EN B2ab(i,ii,iii))   (Probable Decline)   [in Biscuit Flat]
Glenelg Plain (NCP02) 
 Endangered   (IUCN: EN B2ab(i,ii,iii))   (Probable Decline)   [probably only 1 location]
Lucindale (NCP03) 
 Vulnerable   (IUCN: VU B2ab(i,ii,iii); D2)   (Probable Decline)   [mostly in Bool Lagoon]
Fleurieu (KAN02)Kanmantoo
 Endangered   (IUCN: EN B2ab(i,ii,iii))   (Probable Decline)   [stronghold in Stipiturus, also in Glenshera; weeds a threat; only flowers in the open, doesn't produce a lot of seed; could be CR]
Murray Lakes and Coorong (MDD03)Murray Darling Depression
 Endangered   (IUCN: EN B2ab(i,ii,iii))   (Probable Decline)
RSCA map:
Regional Species Conservation Assessments per IBRA subregion. Please click the thumbnail map.
AVH map:
Australian distribution map (external link)
SA Census:
Census of South Australian plants (external link)     [genus Ranunculus]
SA Flora:
Flora of South Australia Edition 5
Name derivation:
Ranunculus from the diminutive of the  Latin 'rana', meaning a frog; a name of a plant in the writings of Pliny and may refer to the many species found in wet places where frogs abound. Papulentus possible from the Latin 'papula' meaning pimple or swelling; referring to warty surface of the seed. 
Distribution:
Found in a few sites in the southern Mount Lofty ranges and the South-east, growing in freshwater wetland. Also found in New South Wales and Victoria.
Status:
Native. Endangered in South Australia. The SA Seed Bank is propagating a number of plants from the single known extant population in the Adelaide & Mt Lofty Ranges region to investigate viable set for this population. Uncommon in the other states.
Plant description:
Rhizomatous or stoloniferous perennial to 25 cm high. Leaves mainly tufted at base with lamina palmatisect, to 5 cm long and wide, glabrous above, sparsely hairy beneath, segments to 6 mm wide. Flowering stems erect, exceeding leaves, with 1–4 large yellow flowered. Flowering between October and January.
Embryo type:
Rudimentary.
Seed collecting:
Pick the seeds from the cluster with your fingers, those turning a pale colour and come away easily from the stalk.
Seed cleaning:
Place the seeds in a tray and leave to dry for 1 to 2 weeks. No further cleaning is required. Store the seeds with a desiccant such as dried silica beads or dry rice, in an air tight container in a cool and dry place.