Stem simple, 10-30 cm tall, proximally glabrous or sparsely eglandular hairy, only most distal part glandular hairy. Leaf buds present in axils of proximal, median or (especially) distal cauline leaves. Basal leaves absent. Cauline leaves crowded along stem, shiny, ovate or narrowly so to lanceolate, 0.8-1.8 cm × 1.5-8 mm, both surfaces glabrous, base cordate, semiamplexicaul, margin cartilaginous eglandular or glandular ciliate, apex acute. Cyme 2-4-flowered or flower solitary; pedicels 2-8 mm, glandular hairy. Sepals erect, ovate, 1.6-5.3 × 0.7-2.5 mm, glabrous or abaxially and marginally ± glandular hairy, veins 3-7, partly or fully confluent at apex, apex acute. Petals yellow, ovate or obovate to elliptic, 4.3-6.6 × 1.6-3.1 mm, 2-callose near base, 3-9-veined, base abruptly contracted into a claw 0.3-1.1 mm, apex obtuse to acute. Stamens 3.5-5.5 mm. Ovary subsuperior, ovoid to broadly so, 1.8-2.2 mm; styles 1.1-3 mm. Fl. and fr. Jul-Nov. 2n = 24.
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