Perennials 15-35 cm tall. Rhizomes to 15 cm. Stems 1-3, erect, simple, glabrous. Basal leaves in 2-5 erect rosettes; petiole 1.5-5 cm, membranous; leaf blade linear, narrowly elliptic, or oblanceolate, 2-8 cm × 3-13 mm, base narrowed, apex obtuse, veins 3. Stem leaves 3-5 pairs; petiole to 2.5 cm, shorter to absent toward apex; leaf blade lanceolate, narrowly elliptic, or elliptic, base narrowed, apex obtuse, veins 1-3. Cymes axillary or terminal, 3branched, forming a panicle, subapical axillary cymes sometimes on pedunclelike branches. Pedicel 0.5-5 cm. Calyx obconic, 1.5-2 cm, tube entire; lobes erect to rarely slightly spreading, linear-triangular to narrowly elliptic, 2-6 mm, unequal, apex obtuse. Corolla pale blue, sometimes pale yellow-white at base, with dark blue streaks in tube, narrowly funnelform to funnelform, 4-5 cm; lobes ovate, 3-4.5 mm, margin entire, apex obtuse; plicae obliquely truncate, margin denticulate. Stamens inserted at middle of corolla tube; filaments 1.3-1.5 cm; anthers narrowly ellipsoid, 3-4 mm. Style 2-2.5 mm; stigma lobes semiorbicular. Capsules narrowly ellipsoid, 2-2.5 cm; gynophore 1.7-2.1 cm. Seeds brown, ellipsoid, 2-2.5 mm. Fl. and fr. Jul-Sep.
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