Perennials 25-40 cm tall. Stems ascending, simple, glabrous. Basal leaves petiole 1.5-3 cm, membranous; leaf blade narrowly elliptic-lanceolate to elliptic-ovate, (7-)15-20 × (1.5-)2-4.5 cm, base narrowed, margin scabrous, apex obtuse, veins 3-5. Stem leaves 2 or 3 pairs; petiole to 1.5 cm, shorter toward apex, membranous; leaf blade lanceolate to ovate-elliptic, (3.5-)5-7 × 0.7-2.5 cm, base obtuse, margin scabrous, apex obtuse, veins 1-3; uppermost leaves sessile, spreading, surrounding flower cluster. Inflorescences crowded into terminal clusters, many flowered. Flowers sessile. Calyx tube 6-11 mm, membranous; lobes linear-lanceolate to oblanceolate, 6-8 mm, almost as long as tube, margin scabrous, apex acute to obtuse, midvein distinct. Corolla pale yellow, tubular to tubular-funnelform, (2.1-)2.5-3(-3.5) cm; lobes ovate-oblong, 4-5 mm, margin entire, apex obtuse; plicae lanceolate, 2.5-3 mm, margin entire or 2cleft. Stamens inserted at middle of corolla tube; filaments 8-11 mm; anthers narrowly ellipsoid, 1.5-2.5 mm. Style 2-2.5 mm; stigma lobes oblong. Capsules ellipsoid, 1.3-1.5 cm; gynophore 8-10 mm. Seeds brown, ellipsoid, 1.2-1.5 mm. Fl. and fr. Aug-Sep.
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