Aizopsis

Aizopsis is a genus of the succulent family Crassulaceae (stonecrop family), found in E Asia.
Description.
Flowers yellow, chromosome numbers, x=16.
Taxonomy.
In 1978, Ohba divided up the very large and cosmopolitan genus "Sedum", placing "S. aizoon" and allied species into "S." subgenus "Aizoon". In 1995, he segregated these species into a separate genus, "Aizopsis". However, other authors included these species in another segregate, "Phedimus", as subgenus "Aizoon". Subsequent molecular phylogenetic analysis established Aizopsis as a sister group to Phedimus, which with distinguishing characteristics justified their retention as a separate genus, although the distinction has not been universally adopted.
Distribution.
East Asia