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Perennial herb or shrublet (occasionally annual ?) about 0.6 m. high, often with annual shoots produced from a woody rhizome; stems slender, densely crisped-pubescent. Leaves up to 3 x 1 cm., narrowly oblanceolate to oblong-oblanceolate, densely crisped-pubescent. Flowers yellowish, pedicels up to 6 mm. long, in lateral 3–12-flowered racemes 1.5–3.5 cm. long with persistent, ovate-acuminate bracts and bracteoles about 1 mm. long. Posterior sepal 4 x 2.8 mm., keel-shaped, pubescent; wing sepals 8–10 x 7–8 mm., yellow, ovate-suborbicular, pubescent; anterior sepals 3.5 x 2.5 mm., free, keel-shaped, pubescent. Upper petals 6 x 2.5 mm., obliquely oblanceolate; carina 6 x 2.5 mm., with crest 3 mm. long. Stamens 8. Capsule 6 x 5 mm., broadly oblong-elliptic in outline, pubescent, emarginate at the apex, margin very narrowly winged. Seeds 4 x 2 mm., at first densely sericeous, more sparsely so when ripe; caruncular appendages broad, humped at the apex, and extending almost to the base of the seed.