Perennials 30-60 cm tall. Stems apically papillate. Stem leaves sessile; lowermost leaves scalelike, 4-6 mm; middle to upper leaves linear-lanceolate, ovate-lanceolate, or ovate, 2-7 × (0.4-)2-3 cm, base rounded to subcordate, margin scabrous and revolute, apex acuminate to acute, veins 3-5. Upper leaves slightly smaller, shorter than flowers and surrounding their bases. Inflorescences 1 to many flowered, terminal or in axillary clusters, axillary clusters rarely on pedunclelike branches; bracts linear-lanceolate to lanceolate, 2-2.5 cm. Flowers sessile. Calyx tube 1-1.2 cm, entire; lobes spreading to erect, linear, 8-10 mm, margin scabrous, apex acute. Corolla blue-purple, sometimes with yellow-green spots in throat, tubular-campanulate to funnelform, 4-5 cm; lobes ovate to ovate-orbicular, 7-9 mm, apex rounded and apiculate; plicae obliquely and narrowly triangular, 3-4 mm, apex acute or slightly 2cleft. Stamens inserted at middle of corolla tube; filaments 0.9-1.2 cm; anthers free, narrowly ellipsoid, 3.5-4.5 mm. Style 3-4 mm. Capsules 2-2.5 cm; gynophore to 1.5 cm. Seeds 1.8-2.5 mm. Fl. and fr. May-Nov.
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A herb. It grows 30 cm high and 20 cm wide. The stems are leafy. The leaves are in pairs and oval to sword shaped. They are 3.5 cm long. The flowers are deep blue. They are often in pairs in the axils of leaves or in clusters at the ends of branches.
Can be grown by cuttings, divisions or seedlings. Seeds needs stratification.
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