Umbilicus platyphyllus Schrenk in Fischer & C. A. Meyer, Enum. Pl. Nov. 1: 71. 1841.

Rootstock to 2.5 cm thick. Rosette 5-10 cm in diam.; rosette leaves rhomboid-obovate to spatulate, flat, 15-40 × 12-20 mm, densely glandular hairy, base sometimes attenuate, margin ciliate, apex obtuse and emarginate or subacute. Flowering stems 1-4, axillary from outer rosette leaves, simple, ascending, 5-10 cm, puberulent; stem leaves remote, sessile, oblong to linear, 10-15 × 4-5 mm, puberulent, margin ciliate. Inflorescences cymose-corymbiform, 3-5 × 3-4 cm, glandular-pubescent, many flowered; bracts linear-oblong, small. Flowers 5-merous; pedicel shorter than corolla. Sepals ovate, ca. 3 mm. Corolla white, 5-7 mm; tube ca. 2.5 mm; lobes reflexed, ovate. Stamens 10, shorter than corolla. Follicles ovoid-oblong, apex beaked; beak linear. Seeds brown, oblong-ovoid. Fl. Jun-Jul, fr. Aug.

Terraces in valleys, slopes in ravines; 2200-2800 m. C Xinjiang [Kazakhstan, Kyrgyzstan].