Stems many, to 50 cm long, few-branched, pubescent. Leaves tripartite, multiplanar; primary lobes bi- or tripartite; petiole 2-7 cm long, pilose, soon glabrescent except pubescent sheath; lamina 5-6 cm long, 6-8 cm wide; ultimate lobes linear to lanceolate, 2.5-5 mm wide, acute, flat, shallowly reticulate, pilose and pubescent, soon glabrescent. Spikes to 10 cm long; flowers openly spaced; peduncle branched, to 18 cm long, pubescent at base, glabrous above; rachis puberulous; bracts ovate, obtuse, 1-1.5 mm long, spreading. Perianth ascending, opening widely, glabrous or sparsely puberulous; adaxial tepal 3.8-5 mm long, 1.5-2.5 mm wide; abaxial tepal 2.5-3.5 mm long. Stigma ovate, minutely emarginate, very concave, 1-1.2 mm long, 0.7-0.8 mm wide; ovary pubescent. Fruit obovoid, 5-6 mm long, pilose.
Grows in laterite and in sandy loam over laterite or sandstone in kwongan.
W.A.: Mt Lesueur, J.S.Beard 7818 (NSW, PERTH); W of Mt Lesueur, B.G.Briggs 6352 (NSW); 21 km W of Brand Hwy on Jurien Rd, A.S.George 17047 (CANB, K, MEL, NSW, PERTH); 1 km NW of Mt Lesueur, E.A.Griffin 1994 (PERTH).
Mt Lesueur, W.A., 30°16'S, 115°11'E, 13 Oct. 1974, A.S.George 12891 ; holo: PERTH; iso: CANB, MEL.
New growth pink. Tepals separating almost to base at anthesis. Fruit sometimes galled.
Author - A.S.George
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Acknowledgements -
Cite this profile as: A.S.George. Synaphea lesueurensis, in (ed.), Flora of Australia. Australian Biological Resources Study, Department of Climate Change, Energy, the Environment and Water: Canberra. https://profiles.ala.org.au/opus/foa/profile/Synaphea%20lesueurensis [Date Accessed: 19 September 2025]