Rungia fangdingiana (Acanthaceae), a new species from Guangxi, China

Rungia fangdingiana , a new species of Acanthaceae from Guangxi, China is described and illustrated. This new species belongs to Rungia sect. Rungia, and resembles R. sinothailandica and R. burmanica in the erect perennial herbaceous habit, elliptic leaves and inflorescence form, but differs mainly by the indumentum and the morphology of the bracts and corolla. The pollen and seed micromorphology of this new species are studied, with photographs and a line drawing provided.