Sedum annuum subsp. gussonei Brullo & Spampinato subsp. nov. (Crassulaceae) from S Italy
The populations of S. annuum from S Calabria are described as a new subspecies, namely subsp. gussonei. This occurs on siliceous rocky places ofthe mountain belt, where it is a member of ephemeral communities rich in acidophilous microphytes.