Ovary densely and shortly appressed-pubescent; style c.3 mm long, with scattered appressed hairs; stigma terminal, fringed with hairs.
Stems perennial, terete with slight pale ridges decurrent from the stipule bases, appressed pubescent.
Flowers large; sepals acuminate, appressed-pubescent outside; petals yellow, 11–12 × 6.5–8 mm.
Inflorescences axillary, 1–2-flowered; pedicels 1–2 cm long in flower, longer in fruit.
Perennial erect woody herb or shrublet from a woody rootstock.
Seeds dull brown with black dots, 3 × 1.8 mm, oblong.
Pods 3.5–5 × 0.5 cm, sparsely appressed-pubescent.
Stamens 10; three larger than the rest.