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Herb, 4-40 cm high. Stems from a woody underground rootstock, erect or decumbent, rarely procumbent, branched or unbranched, 3-ribbed, glabrous, glandular or eglandular. Leaves sessile, ascending; blade very variable in shape and size, upper and middle leaves usually narrowly ovate, narrowly elliptic or linear, basal leaves broader and shorter, 3-36 mm long, 0.5-6 mm wide, apex acute or obtuse, base clasping, venation not conspicuous, pellucid-glandular punctate. Flowers up to c. 50 in a loose dichasial cyme or solitary. Sepals ± equal, narrowly ovate, 5.5-7 mm long, 1.2-1.5 mm wide, long-acute, with translucent longitudinal veins and gland dots. Petals 1-2 times as long as sepals, yellow or orange, sometimes marked with red, distinctly veined. Stamens 40-60, irregularly arranged; filaments 4-6 mm long; anthers c. 0.3 mm long. Ovary ovoid, 1.5-3.5 mm long, 1-1.5 mm wide, 1-locular; styles 3, free, 1.5-2 mm long; stigmas capitate. Fruit capsular, (2)3-4-valved.
Perennial herb, 0.05-0.40 m high; stems from woody, underground rootstock. Leaves sessile; variable in size and shape; pellucid-glandular punctate. Flowers solitary or up to 50 in a loose dichasial cyme. Sepals ± equal; 5.5-7.0 x 1.2-1.5 mm; translucent longitudinal veins and gland dots. Petals 1-2x as long as sepals; yellow or orange; distinctly veined. Stamens 40-60; irregularly veined. Ovary ovoid; stigmas capitate. Flowering time Oct.-Apr. Fruit a capsule.
Perennial herb, up to 0.4 m high. Stems quadrangular, erect or decumbent, glabrous, glandular or eglandular. Leaves sessile; blade variable in shape and size, 3-36 x 0.5-6.0 mm. Flowers: solitary or in a loose dichasial cyme; sepals ± equal, long-acute, dotted with translucent glands; corolla 5-10 mm long, yellow or orange, sometimes marked with red; Nov.-Feb.
Leaves sessile; lamina 7–23 × 1–7 mm., that of the middle and upper ones usually lanceolate or narrowly elliptic, acute or obtuse at the apex, clasping at the base, that of the basal leaves and those on sterile shoots relatively shorter and broader, with minute inconspicuous translucent glandular dots.
Perennial to 40 cm with 4-angled stems from a woody rootstock. Leaves ascending, linear to elliptic. Flowers 1-many in a loose cyme, yellow; sepals glabrous.
Herb, 40-400 mm tall. Stems quadrangular. Sepals and petals without dark dots. Styles 3, free. Flowers yellow or orange, sometimes marked with red.
Petals 6–8 (10) mm. long, 1–2 times as long as the sepals, apricot-or orange-yellow, sometimes marked with red, eglandular.
Stems erect, 8–70 cm. long, single or slightly tufted, sometimes shortly decumbent below, slender, quadrangular.
Flowers up to c. 50 (often much fewer), in a loose dichasial cyme or solitary.
Sepals ± equal, lanceolate, acute, with longitudinal translucent veins.
Ovary 1-locular; styles (2) 3–4, free.
Stamens 40–60, irregularly arranged.
Perennial herb (? rarely annual).
Yellow or orange-yellow flowers.
Fruit capsular, (2) 3–4-valved.
Herb of moist grassland
