Lysimachiacavicola (Primulaceae), a new species from Guangxi, China.

Lysimachiacavicola (Subgen. Idiophyton, Primulaceae), a new species from Guangxi, China, is here described and illustrated based on morphological data. Although it shares similarities with L.microcarpa , L.fooningensis , and L.capillipes , there are distinguishing characteristics that set it apart. These include erect stems either solitary or in clusters of 1 to 2, herbaceous, terete, and densely glandular hairy. The leaves are either ovate or elliptical lanceolate, with inconspicuously reticulate veins. The petiole measures 2-4 mm in length covered with minute glandular hairy. The corolla is deeply parted, measuring 6-8 mm in length, with narrowly elliptic or narrowly oblong lobes that are 1-2 mm wide. The capsule is globose, measuring 2-3 × 2-3 mm, and possesses a chalky, brittle texture, which splits into 5-valved segments. The calyx of the plant appears yellowish-white during fruiting. This newly discovered species is endemic to limestone areas in Fengshan County, Guangxi, China.