Plants perennial, viscid; taproot stout; caudex branched, woody. Stems several, simple or branched, spreading to ascending, leafy, 10-30 cm, densely pubes-cent, glandular. Leaves 2 per node, mostly cauline, blade 1.5-6 cm × 3-14 mm, apex sharply acuminate, pubescent and viscid on both surfaces; distal sessile, blade elliptic-lanceolate; proximal short-petiolate, blade oblanceolate. Inflorescences leafy, flowers terminal and axillary. Pedicels straight, rather slender, 1/ 5 times to equaling calyx. Flowers: calyx prominently 10-veined, tubular to narrowly obconic in flower, 16-20 × 4-5 mm, clavate and broadening to 7 mm in fruit, narrowed proximally around carpophore, coarsely glandular-pubescent and viscid, veins parallel, green, with pale commissures, lobes narrowly lanceolate, 5-7 mm, margins narrow, membranous, apex acuminate; corolla white to pale yellow, sometimes purple tinged, clawed, ca. 2 times calyx, claw longer than calyx, broadened into obtriangular limb, limb 5-8 mm, cleft ca. to middle into (2-)4-8 lanceolate to oblong lobes, appendages 2, very short; stamens exserted, shorter than petals; styles 3, exserted, slender, shorter than petals. Capsules narrowly ovoid, equaling calyx, opening by 3 teeth that tardily split into 6; carpophore 3-6 mm. Seeds brown, broadly reniform, flattened, ca. 1.5 mm, sides rugose, margins papillate; papillae conic, acute. 2n = 96.
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