Thymus serpyllum Linnaeus var. przewalskii V. Komarov, Trudy Imp. S. Peterburgsk. Bot. Sada 25: 379. 1907; T. przewalskii (V. Komarov) Nakai.

Leaves broadly ovate-lanceolate, 1-1.2 cm × 4-5 mm, lateral veins 3- or 4-paired. Rachis of inflorescence densely pilose, hairs shorter than diam. of rachis.

Perhaps conspecific with Thymus mandschuricus. Gravelly areas, grassy hills, sandy riverbanks, sandy beaches, rocky crevices; 600-3500 m. Gansu, Hebei, Heilongjiang, Henan, Jilin, Liaoning, Nei Mongol, Shaanxi, Shanxi [Korea, Russia]