The World Flora Online

Herb of moist grassland Yellow or orange-yellow flowers. Yellow or orange-yellow flowers.

Herbe' vivace, dressée, parfois procombante à la base, atteigant 1 m de haut; tiges simples ou peu ramifiées, à section quadrangulaire, subailées, glabres.' Feuilles' sessiles, dressées contre la tige; limbe elliptique à linéaire, atténué à la base et au sommet, de 3-20 mm de long et 1-5 mm de large, glabre, ponctué sur toute la surface de glandes brunes translucides; nervure médiane proéminente en dessous; nervures latérales 2 paires, longuement ascendantes, parfois absentes. Cymes bipares, pauci- à multiflores; bractées linéaires, de 2-5 mm de long.' Fleurs' jaunes à orangées; pédicelle de 2-10 mm de long, glabre; sépales subégaux, lancéolés, de 4-5 mm de long et 1-1,5 mm de large, glabres, à glandes translucides disposées en lignes longitudinales parallèles; pétales oblongs, de 6-8 mm de long et 2 mm de large, glabres; étamines , à filets à peine soudés à la base et non groupés en faisceaux distincts, de 5 mm de long; anthères subglobuleuses, de 0,3 mm de long; ovaire ovoïde, 1-loculaire; styles 3-4, libres, de 1 mm de long. Capsules ovoïdes, de 5-6 mm de long et 2,5-4 mm de diam.'Graines ellipsoïdes, de 0,6 mm de long et 0,3 mm de diam., striées longitudinalement et finement réticulées-fovéolées.

Formations marécageuses; jusqu'à 2 000 m d'altitude.

Du Sudan au Cap, Angola, Nigeria, Madagascar.

Stamens from 40–60, not arranged in definite groups. Styles 3 or 4. Capsule 3- or 4-valved. Petals 6–8 (10) mm. long, yellow or orange-yellow, sometimes marked with red, without marginal dots. Flowers up to about 50, or often much fewer, arranged in a loose dichotomous cyme; pedicels 2–22 mm. long. Sepals ± equal, lanceolate, acute, furnished with translucent ± parallel veins. Leaves sessile, lanceolate or narrowly elliptic, those towards the middle of the stem ranging from 7 x 1 mm. to 23 x 7 mm., those towards the base and of the sterile shoots relatively shorter and broader, acute or obtuse, clasping the stem at the base, furnished with minute inconspicuous translucent glandular dots. Flowers up to about 50, or often much fewer, arranged in a loose dichotomous cyme; pedicels 2–22 mm. long. Petals 6–8 (10) mm. long, yellow or orange-yellow, sometimes marked with red, without marginal dots. Sepals ± equal, lanceolate, acute, furnished with translucent ± parallel veins. Leaves sessile, lanceolate or narrowly elliptic, those towards the middle of the stem ranging from 7 × 1 mm. to 23 × 7 mm., those towards the base and of the sterile shoots relatively shorter and broader, acute or obtuse, clasping the stem at the base, furnished with minute inconspicuous translucent glandular dots. Stems erect, single or slightly tufted, sometimes shortly decumbent below, 0.8–7.0 dm. long, slender, quadrangular. Glabrous perennial herb. Glabrous perennial herb. Stems erect, single or slightly tufted, sometimes shortly decumbent below, 0.8–7.0 dm. long, slender, quadrangular. Stamens from 40–60, not arranged in definite groups. Capsule 3- or 4-valved. Styles 3 or 4. Styles 3 or 4. Capsule 3- or 4-valved. Petals 6–8 (10) mm. long, yellow or orange-yellow, sometimes marked with red, without marginal dots. Flowers up to about 50, or often much fewer, arranged in a loose dichotomous cyme; pedicels 2–22 mm. long. Sepals ± equal, lanceolate, acute, furnished with translucent ± parallel veins. Leaves sessile, lanceolate or narrowly elliptic, those towards the middle of the stem ranging from 7 x 1 mm. to 23 x 7 mm., those towards the base and of the sterile shoots relatively shorter and broader, acute or obtuse, clasping the stem at the base, furnished with minute inconspicuous translucent glandular dots. Flowers up to about 50, or often much fewer, arranged in a loose dichotomous cyme; pedicels 2–22 mm. long. Petals 6–8 (10) mm. long, yellow or orange-yellow, sometimes marked with red, without marginal dots. Sepals ± equal, lanceolate, acute, furnished with translucent ± parallel veins. Leaves sessile, lanceolate or narrowly elliptic, those towards the middle of the stem ranging from 7 × 1 mm. to 23 × 7 mm., those towards the base and of the sterile shoots relatively shorter and broader, acute or obtuse, clasping the stem at the base, furnished with minute inconspicuous translucent glandular dots. Stems erect, single or slightly tufted, sometimes shortly decumbent below, 0.8–7.0 dm. long, slender, quadrangular. Glabrous perennial herb. Glabrous perennial herb. Stems erect, single or slightly tufted, sometimes shortly decumbent below, 0.8–7.0 dm. long, slender, quadrangular. Stamens from 40–60, not arranged in definite groups. Capsule 3- or 4-valved. Styles 3 or 4.

In or near water; swampy areas, vleis, river or stream-banks. Dry Grassland; Mesic Grassland. In or near water, swampy areas, vleis, river- or streambanks. Damp clay flats and slopes. Dry Grassland; Mesic Grassland. In or near water, swampy areas, vleis, river- or streambanks. Damp clay flats and slopes.

An extremely variable species in habit, leaf shape and size, flower size and colour and density of punctate glands.

Widely distributed in Africa from Nigeria and the Sudan southwards to the Cape Province. Also in Madagascar. Somerset West to N Africa. Somerset West to N Africa.

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. Herb, 40-400 mm tall. Stems quadrangular. Sepals and petals without dark dots. Styles 3, free. Flowers yellow or orange, sometimes marked with red. 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, 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. Herb, 40-400 mm tall. Stems quadrangular. Sepals and petals without dark dots. Styles 3, free. Flowers yellow or orange, sometimes marked with red. 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, 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.

Stamens 40–60, irregularly arranged. Ovary 1-locular; styles (2) 3–4, free. Fruit capsular, (2) 3–4-valved. Flowers up to c. 50 (often much fewer), in a loose dichasial cyme or solitary. 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. Stems erect, 8–70 cm. long, single or slightly tufted, sometimes shortly decumbent below, slender, quadrangular. Perennial herb (? rarely annual). Petals 6–8 (10) mm. long, 1–2 times as long as the sepals, apricot- or orange-yellow, sometimes marked with red, eglandular. Sepals ± equal, lanceolate, acute, with longitudinal translucent veins. Ovary 1-locular; styles (2) 3–4, free. Fruit capsular, (2) 3–4-valved. Flowers up to c. 50 (often much fewer), in a loose dichasial cyme or solitary. 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. Stems erect, 8–70 cm. long, single or slightly tufted, sometimes shortly decumbent below, slender, quadrangular. Perennial herb (? rarely annual). Petals 6–8 (10) mm. long, 1–2 times as long as the sepals, apricot- or orange-yellow, sometimes marked with red, eglandular. Sepals ± equal, lanceolate, acute, with longitudinal translucent veins.