Saxifraga viridiflora (Saxifragaceae), an unusual new species from Guangxi, China

Saxifraga viridiflora, a remarkable new species of the genus Saxifraga sect. Irregulares (Saxifragaceae) from Guangxi, is described and illustrated herein. This new species morphologically differs from all known S. sect. Irregulares taxa by its greenish petals, verruculose sepals, and thick leathery leaf blade abaxially scarlet with white spots.