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Leaves (6)12–56-foliolate; leaflets 1–7 × 0.3–1.5(3) mm, oblong or oblong-elliptic, acute to rounded at the apex, obliquely rounded at the base, glabrous, sometimes denticulate-ciliate; main nerve somewhat or very eccentric; petiole and rhachis together 0.5–3 cm long, pubescent or glabrous; petiolules 0.3 mm long; stipules 1.5–5(7.5) × 0.5–2(3) mm, ovate or ovate-lanceolate, not appendaged, sometimes ciliate.
Inflorescences axillary or terminal, branched, several-to many-flowered; peduncle 0.2–3.5 cm long; rhachis 0.5–10(14) cm long, often zigzag; pedicels 2–8(17) mm long; bracts 2-lobed to the base, persistent, the lobes 1–3.5(6) × 0.5–1.5(2.5) mm, ovate to elliptic-lanceolate, entire or 2-fid, pubescent to glabrous; bracteoles 1.5–3(6) × 0.5–1(1.3) mm, lanceolate to ovate-lanceolate, often ciliate, persistent.
A very variable species. Two taxa which I had thought might be species have been retained at varietal rank. A. nambalensis cited below is actually about intermediate between var. bracteosa and var. delicatula.
Fruit of 1 article or sometimes 2, joined by a very narrow neck, each article rounded, 4–5(7) × 3.5–4.5(6) mm, compressed or slightly inflated, glabrous, densely and finely rugulose when adult.
Erect, somewhat spreading or almost prostrate intricately branched sticky subshrub, 4–15 mm high, or tufted pyrophyte, 7–35 cm high, with a thick woody rootstock.
Calyx glabrous, 2-lipped, one 3–5 × 2–3.5 mm, elliptic or ovate, emarginate or 2-toothed, the other 4–5(6.5) × 2–3.5 mm, oblong, 3-toothed, both ciliate above.
Standard yellow or orange, rarely cream-coloured, 5–10 × 2.5–7 mm, violin-shaped, emarginate; wings and keel petals yellow, the latter not laciniate.
Seeds pale brown, compressed, 3.4 × 2.5 × c. 1 mm, almost semicircular in outline; hilum small, circular, eccentric.
Stems several–30, glabrous to densely pubescent with sticky tubercular-based short hairs, ± rugose.
