Pseudostellaria is a perennial herb, 15 to 20cm in height. Root is in the shape of a long spindle. Lower stem is purple and nearly square while the upper stem is nearly round, green, and with 2 rows of fine hairs and slightly enlarged node. Leaves are opposite and slightly with endoplasm; lower leaves are spatulate or oblanceolate, and with acute apex and attenuate base; upper leaves are from lanceolate to ovate. Flowers are axillary and there are 2 different types. The cleistogamous flower is located in the axils of lower stem leaf, small, pubescent, and with small stalk, 4 sepals, but no petals; the ordinary flowers are 1 to 3, apical, white, and with 1-4cm purple pedicels, 5 lanceolate sepals, 5 obovate petals, 10 stamens, and 1 pistil. Capsule is nearly spherical and 5-lobed when ripe. Seeds are oblate and with multiple papilla-like nodules. Bloom time is from April to May and fruiting period is from May to June. Main habitats are hillside forest and rocky crevices.