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Dwarf shrub, 0.2-0.6 m high, rootstock woody. Stipules setaceous, up to 6 mm long. Leaves narrowly lanceolate to ovate, apex acute, base rounded, sometimes with a pair of basal, setaceous lobes, margins crenate-serrate. Inflorescences of small (1)2-or 3-flowered cymes opposite upper leaves; peduncles 4-25 mm long, patent pubescent. Flowers ± 10 mm long, yellow. Sepals linear-lanceolate, ± 10 mm long. Petals shorter than sepals. Androgynophore ± 0.5 mm long. Flowering time midsummer. Fruit a capsule on straight, fruiting pedicel, 25-50 mm long, trigonous, apex undivided. Seeds many.
Leaf-lamina up to 7 × 2·6 cm., narrowly lanceolate to ovate, apex acute, margin crenate or crenate-serrate, base rounded or slightly cordate, sometimes with a pair of setaceous basal lobes, pilose on both surfaces, especially on the nerves, hairs not tubercle-based, strongly 3–5-nerved from the base; petiole up to 8 mm. long, setulose-pilose all round; stipules up to 6 mm. long, setaceous, pubescent.
A herb. It is slightly woody. It has bristly hairs. The lower leaves are 1 cm long. The leaf blade is almost round. It has irregular lobes and teeth. The blades of the upper leaves are sword shaped and pointed. They are 4 cm long by 1 cm wide. About 3 flowers occur in a group. The fruit has short bristles.
Inflorescences of small (1) 2–3-flowered cymes opposite the upper leaves; peduncles 0·4–2·5 cm., with a patent pubescence all round; pedicels similar, up to 8 mm. long; bracts setaceous, similar to the stipules.
Capsule 2·5–5 cm. long, on a straight fruiting pedicel, undivided at the apex, glabrous or sparsely scabrous on the angles; valves hollowed out to contain the seeds within.
Perennial herb with prostrate or spreading stems up to 0·6 m. long; rootstock woody; branchlets, at least when young, with a spreading pubescence all round the stem.
Prostrate or spreading perennial herb. Capsule 3-or 4-valved, fruiting pedicel straight. Fruit valves his-pidulous. Flowers yellow.
Sepals up to 10 × 1·5 mm., linear-lanceolate to narrowly lanceolate, apex caudate-acuminate, setulose-pilose outside.
Petals yellow, slightly shorter than the sepals, oblanceolate to obovate, with a short basal ciliate claw.
Androgynophore c. 0·5 mm. long, extended above into a slightly undulate glabrous annulus.
Ovary trigonously cylindric, densely pubescent; style c. 2·5 mm. long, slender, glabrous.
Seeds numerous, dark brown-grey, c. 2 × 1·2 mm.
Stamens c. 50.
