Subshrub or shrub to 3 m high. Branchlets with stellate hairs of two size classes (long coarse stellate hairs 1.7–2.3 mm long, long soft stellate hairs 2.5–4 mm long, and short soft stellate hairs 0.3–0.4 mm long), with glandular hairs, the indumentum not obscuring the epidermis. Climax leaves: petiole 20–180 mm long; lamina broadly elliptic, 3-lobed, 21–186 mm long, 19–151 mm wide, base cordate, margin serrate-dentate to crenate, apex acute, indumentum of short soft whitish to yellowish stellate hairs. Flowers with the peduncle obsolete or up to 6 mm long, pedicel present; epicalyx short soft stellate-hairy, 7–9-segmented, segments shortly connate at the base, narrowly spathulate to linear-obovate, 5–12 mm long, 1–2 mm wide, shorter than the calyx; calyx short soft stellate-hairy on the abaxial surface, campanulate, 10–18 mm long, lobes ovate, apex acute, 3-veined; petals yellow with red basal spots, short coarse stellate-hairy on the abaxial surface, glabrous on the adaxial surface, 15–37 long, 8–10 mm wide, rounded at the apex; staminal column glabrous, 8–18 mm long, stamens distributed throughout, filaments 0.6–1 mm long; ovary hairy, style arms 0.2–1 mm long. Capsule hairy, 10–16 mm long, 8–12 mm wide, beak 1–2 mm long. Seeds angular reniform, 2–3 mm long, concentrically ribbed, glabrous or short brownish to yellowish stellate-hairy.
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A small shrub. It has a woody rootstock. It often only has a few erect stems. It grows 2.7 m tall. The branches are densely hairy. Young growth is greyish. The leaves are 4-10 cm long by 3-8 cm wide. They are broadly oval to heart shaped. The leaf stalks are 3-7 cm long. They are dull green and have hairs on both surfaces. There are teeth along the edges. The flowers are 6-9 cm across and bright yellow. They have a dark red blotch at the centre. The flowers occur singly in the axils of the upper leaves. The fruit is a capsule 1.2-1.7 cm long and 1-1.2 cm wide. It is densely hairy. The seeds have short hairs.
Occurs on black basaltic soil, in swampy Eucalyptus woodland on black soil; in a floodway with Acacia, Iseilema and Eragrostis; and on a river flood plain. The ecology of H. panduriformis is much less variable than that of H. apodus and H. austrinus. The black soil country in which the species occurs typically is poorly drained during the monsoon season although it becomes very dry during the dry season. These habitats are generally consistent with the ecology recorded for H. panduriformis by Van Borssum Waalkes (1966).
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A tropical plant. It suits tropical places. It grows in northern and central Australia. It grows in woodland on heavy soils along stream banks. It needs an open sunny position and well drained soil. It is not very frost tolerant. It grows in savannah areas in West Africa. Bombay.
Dry places; old cultivations; sandy soil; gallery forest; savannah with thorny plants; dembos; swampy places; Acacia woodland and wooded grassland ; also as a weed on black soil; at elevations from sea level to 2,000 metres.
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