Supplementary Description of Primula lithophila and Two New Recorded Species of Primula in Guizhou Province

Primula lithophila was an early species published on plant specimens, and curremt literature of its phenological period and many biological characteristics were incorrectly described, which made it difficult to define the species. This study adopted methods such as field investigation, literature review, specimen collection, and morphological feature comparison in the type locality, the supplementary description of its phenological period and biological characteristics was provided. The results indicated that: the petioles of P.lithophila did not have wings, and color was pink with few white, scape 10-25 cm length, pedicel 15-30 mm length, corolla tube about 16 mm and limb diameter 10-15 mm respectively. Capsule tubular, about 3 mm long, approximately half long of the persistent calyx. The flowering period was from September to February, and the fruiting period was from March to June. In addition, two new recorded species: P. pelargoniifolia G.Hao, C.M.Hu ＆ Z.Y.Liu and P. tardiflora（C.M.Hu） C.M.Hu, were reported.