Roots carrot-shaped, 15-20 × 0.5-1 cm. Stems erect or ascending, main stems robust, fertile, 15-30 cm tall, glabrous or sparsely villous; branches sterile, slender, leafy, aggregated at base of main stems, 4-6 cm, villous. Leaves on main stems alternate, those on branches subopposite; petiole ca. 2 mm, white hirsute; blade ovate or suborbicular, 3-20 × 3-17 mm, both surfaces villous, base cordate or truncate, margin subentire or crenate, apex obtuse or acute. Flowers solitary, terminal on main stems, slightly pendent. Calyx tube adnate to ovary up to middle, hemispheric, 3-5 × 6-10 mm, glabrous or villous; lobes triangular or oblong, 6-7 × 2-3 mm, outside hairy, margin entire, apex acute or obtuse; sinus between lobes broad and obtuse. Corolla tubular-campanulate, 2-4.8 × 1.5-4.3 cm, shallowly lobed; lobes triangular, 2-4 × 7-9 mm, apex obtuse; tube pale blue, 18-23 × 6-9 mm, glabrous or occasionally sparsely villous. Filaments slightly dilated at base, ca. 1 cm; anthers ca. 3 mm, villous at connective. Capsule hemispherical at base, conical toward apex, rostrate. Seeds numerous, brown-yellow, ellipsoid, smooth. Fl. Jul-Sep, fr. Sep-Oct.
Home