Herbs woody, 1-3 m tall. Stipule ovate-lanceolate, ca. 1 cm; petiole 0.8-3.5 cm, puberulent; leaf blade oblong-lanceolate, 7-10 × 2-4.5 cm, glabrous, basal veins 5, lateral veins 7-10 pairs, base rounded, margin serrulate, apex acuminate. Flowers solitary or 1-3 arranged in cymes, axillary, opposite to leaves; peduncle and pedicel short. Sepals oblong, hairy at base,
apex long awned. Petals oblong, as long as or slightly shorter than sepals, stalked at base; stalk ciliate. Stamens on very short androgynophore, glabrous. Ovary 5-loculed, hairy; style glabrous; stigma disk-shaped, lobed. Capsule cylindrical, slightly curved, 10-angled, robust, 5-6-valved, 3-8 cm, apex beaked, with single awn. Seeds obconic, slightly angled, separated by septum. Fl. summer-autumn.
An erect, subglabrous, annual or biennial, up to 3 m tall (in cultivation). Stem basally woody, branched. Leaves 3-5-costate, lanceolate to ovate-lanceolate, 2.2-9 cm long, 1.8-4.2 cm broad, glabrous except the scattered hairy veins, serrate, basal serratures prolonged into filiform deflexed appendages, acute or acuminate; petiole 1-3.2 cm long, hairy; stipules subulate, 8-12 mm long. Cyme 1 or 2-flowered, antiphyllous, shortly pedunculate. Flowers yellow, 12-15 mm across; subsessile; bracts subulate, 4-5 mm long. Sepals linear-oblong, 5-7 mm long, 1.5-3 mm broad, keeled, caudate, somewhat bullate outside. Petals oblanceolate, 7-8 mm long, 2.5-4 mm broad, hairy at the base, obtuse. Stamens numerous, somewhat united at the base, filaments 6-7 mm long; anthers subglobose. Carpels 5; ovary cylindric, subsulcate, 5-loculed, thinly hairy; style short, stigma 5-lobed, minutely papillate. Capsules 1 or 2 together, 2-7.2 cm long, with 4-5 mm long, entire beak, c. 4-5 mm across, 10-angled, glabrous, 5-loculed, locules transversely septate. Seeds greenish-black, triangular, ovate, c. 2 mm long.
A more or less glabrous herb, often woody at the base
A common form has laciniate leaves.
Sepals 5, 5–8.5 mm long, 1.5–3 mm wide, ciliate at the basal margin.
Inflorescences of 1–2(–3)-flowered fascicles; peduncles up to 2 mm, glabrous; pedicels up to 2 mm; bracts up to 3 mm long, glabrous.
Seeds angular, 1.5–2 mm long, irregularly ribbed, black.
Capsule cylindric, 10-ribbed, straight or slightly curved on erect pedicels, 2–8 cm long, 0.4–0.7 cm wide, splitting into 5 valves, tapering to a beak.
Petals 5, 5–7 mm long, 1–2 mm wide, pale yellow, oblanceolate, with a short ciliate claw at the base; stamens ∞; ovary cylindric, minutely setulose, to 3.5 mm long.
Annual herb to 2.5 m, mainly glabrous.
Leaves elliptic to narrowly elliptic, oblong-ovate or ovate, chartaceous, 4.5–14 cm long, 1–5 cm wide, margins serrate with 2 basal serrations prolonged into 2 setae up to 2.3 cm long, rounded at base, acute to acuminate, prominently nerved above and beneath, with setaceous hairs; petioles 1.4–5 cm long, covered with setaceous hairs on upper surface; stipule 0.5–1.6 cm long, glabrous.
Ovary cylindric, 10-ribbed, very minutely setulose and glandular, 5-locular, many-ovuled.
Capsule 1–8 cm. long, cylindric, appressed to the stem, straight or slightly curved, somewhat torulose, 10-ribbed, 5-valved, with a straight undivided beak c. 1·2 cm. long and inner surface of valves transversely septate.
Seeds blackish, c. 2·3 × 2 mm., angular.
Petals yellow, c. 7 mm. long, oblanceolate, with a short ciliate claw at the base.
Ovary clasped at the base by a cupular annulus c. 0·5 mm. long with somewhat undulate margin.
Leaf-lamina 3–10 × 2–5 cm., ovate-lanceolate to lanceolate, thin-textured, apex acute, margin serrate or serrate-crenate with the two lowest serrations prolonged into elongated setaceous appendages c. 1 cm. long, rounded at the base, glabrous on both surfaces or setulose on the nerves beneath; petiole up to 5 cm. long, pubescent on the upper side; stipules c. 1 cm. long, setaceous, glabrous.
Coarse erect annual up to 2 m. tall; young branches somewhat angular or sulcate, glabrous.
Sepals c. 7 mm. long, linear, thin-textured, bluntly caudate at the apex, glabrous.
Inflorescences of small 2–3-flowered cymes opposite the upper leaves; peduncles very short, c. 1 mm. long, glabrous; pedicels 1–2 mm. long; bracts c. 5 mm. long, setaceous, glabrous.
Coarse, annual herb, 2 m high. Capsule 10-ribbed, 5-valved. Flowers yellow.
Herbe'souvent suffrutescente, dressée ou prostrée, ± ramifiée, de 0,60-2 m de haut; tiges rosâtres, glabres.'Feuilles'à stipules lancéolées-filiformes, de 10-15 mm de long, persistantes; pétiole de 0,5-7,5 cm de long, pubescent sur les bords; limbe lancéolé à ovale-lancéolé, tronqué à aigu à la base, acuminé au sommet, muni à la base de 2 appendices filiformes atteignant 2 cm de long, de 2,5-16 cm de long et 1-6,5 cm de large, denté, glabre, parfois éparsement pubescent le long des nervures en dessous; nervures basales 4-6.'Fascicules'oppositifoliés, 2-4-flores, ou fleurs solitaires.'Fleurs'jaune orange, glabres; pédicelle de ± 1 mm de long, glabre; bouton obovoïde, de 4-5 mm de long, apiculé; sépales oblancéolés, apiculés au sommet, de 6-8 mm de long, ± caducs; pétales obovales, courtement onguiculés, de 6-7 mm de long et ± 4 mm de large au sommet; disque annulaire, de ± 0,6 mm de long; étamines ∞; ovaire cylindrique, 10-côtelés et éparsement pubérulent à l'extérieur, 5-loculaire; style plus court que l'ovaire, glabre; ovules ∞.'Capsules'dressées, cylindriques, de 6-8 cm de long et 0,7 cm de large, glabres, à bec entier de 5-10 mm de long; valves 5, à cloisons transversales complètes.'Graines ∞, ovoïdes.
Coarse erect annual up to 2 m tall; young branches somewhat angular or sulcate, glabrous. Leaf-blade 30-100 x 20-50 mm, ovate-lanceolate to lanceolate, thin-textured, apex acute, rounded at the base, margin serrate or serrate-crenate, the two lowest serrations prolonged as setaceous appendages about 10 mm long, glabrous on both sides or setulose on the nerves beneath; petiole up to 50 mm long, pubescent on the upper side; stipules about 10 mm long, setaceous, glabrous. Inflorescence of small 2-3-flowered cymes opposite the upper leaves; peduncles very short, about 1 mm long, glabrous; pedicels 1-2 mm long; bracts about 5 mm long, setaceous, glabrous. Sepals about 7 mm long, linear, thin-textured, bluntly caudate at the apex, glabrous. Petals yellow, about 7 mm long, oblanceolate, with a short basal claw with ciliate margin. Androgynophore about 0.5 mm tall; annulus with an undulated margin clasping the base of the ovary. Stamens filamentous, about 20. Ovary cylindric, 10-ribbed, very minutely setulose and glandular, 5-locular, many-ovuled. Capsule 20-80 mm long, cylindric, appressed to the stem, straight or slightly curved, somewhat torulose, 10-ribbed, with a straight, undivided beak about 12 mm long, inner surface of valves transversely septate; seeds blackish about 2.3 x 2 mm, angular.