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Flowers (1)2–4 per axil, on a peduncle 3–15 mm long; pedicels 5–8 mm long; bracteoles 7–10(15) × 3–5 mm, ovate, pilose.
Standard pale mauve, blue or cream-coloured with blue striations, 3.5–4.5 × 2–3(3.5) cm, moderately pubescent outside.
Pod 3–5-seeded, oblong-clavate, compressed, pubescent, particularly along the raised sutures, glabrescent.
Pxerennial herb, with numerous erect to trailing stems up to 1 m long; rootstock woody.
Stems slightly flexuous, somewhat angled, pubescent on younger parts.
Seeds black, 7 × 6 × 2 mm (only one collection seen).
Calyx 12–20 mm long, pilose; lobes lanceolate.
