A perennial 30-100 cm tall, with a strongly branched reddish-brown horizontal rhizome. The stems are numerous, erect, knobby, glabrous or rough with short hairs.
The leaves are opposite, oblong or oval, pointed, 5-12 cm long and 1-4 cm wide, with three longitudinal veins, glabrous, the upper ones are sessile, the lower ones with short petioles.
Flowers up to 5 cm in diameter, fragrant, collected in a multi-flowered corymbose-paniculate inflorescence. Pedicels are shortened, bracts linear-lanceolate. Blooms from June to September.
The fruit is an oblong-ovate single-nest capsule, opening at the top with four outward-bending denticles. The seeds are small (about 1.8 mm in diameter), numerous, spherical-kidney-shaped, black, warty. The seeds ripen in September.
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Free shipping from Poland on orders from €79 · Seeds from India ship separately: €6.90, free from €69, 7–21 business days
Free shipping from Poland on orders from €79 · Seeds from India ship separately: €6.90, free from €69, 7–21 business days