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Ranunculus pentandrus J.M.Black
Family Ranunculaceae
Ranunculus pentandrus J.M.Black APNI*

Description: Annual, glabrous or sparsely pilose.

Flowering stems to 30 cm high, branching.

Leaves with lamina 0.7–2.5 cm long, 1–2 cm wide, ternate with segments once or twice ternately cut into lanceolate or linear-lanceolate lobes. Petals 1 or 2, elliptic to obovate or spathulate, 1.4–1.8 mm long, pale yellow; nectary above middle of petal.

Achenes 2–4 mm long, very thin (laterally compressed), usually twisted when mature, margin thickened, beak triangular, 0.3–1 mm long.

Flowering: spring.

Distribution and occurrence: Grows in intermittently moist sites on heavy soils in arid and semi-arid regions.
NSW subdivisions: NWS, CWS, SWS, NWP, SWP, NFWP, SFWP
Other Australian states: Qld N.T. S.A. W.A.
AVH map***

Text by B. G. Briggs & R. O. Makinson
Taxon concept:

 Key to the varieties 
1Lateral faces of achenes smooth, tubercles lacking or very fewvar. pentandrus
Lateral faces of achene with small conical tubercles each bearing a recurved hairvar. platycarpus

APNI* Provides a link to the Australian Plant Name Index (hosted by the Australian National Botanic Gardens) for comprehensive bibliographic data
***The AVH map option provides a detailed interactive Australia wide distribution map drawn from collections held by all major Australian herbaria participating in the Australian Virtual Herbarium project.
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