Annual herb, erect to procumbent, 5–30 cm tall, slender, wiry, glabrous or sparsely setose. Leaves filiform to linear or oblanceolate, acute, 5–35 mm long, 0.3–3.5 mm wide, entire, Sepals 1.4–2 mm long, the medians saccate. Petals 2–6 mm long, white. Staminal filaments without appendages, glabrous or papillose, at base of short stamens. Siliqua moniliform, 5–18 mm long, 1 mm wide, spreading to somewhat pendent on pedicel 3–10 mm long; valves flat, 2- or 3-veined. Seeds c. 1 mm long.
W.A.: near Mandurah, N. T. Burbidge 1981 (CANB); Mullaloo, H. Demarz 2683 (PERTH); Cape Naturaliste, S. Paust 150 (PERTH); Perth, Sept. 1934, R. Roe (CANB).
The plants in Australia probably belong to Heliophila pusilla L.f. var. pusilla.
Author - H.J.Hewson
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Cite this profile as: H.J.Hewson. Heliophila pusilla, 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/Heliophila%20pusilla [Date Accessed: 19 September 2025]