. "\"The process whose specific outcome is the progression of the sorus over time, from its formation to the mature structure. A sorus is a mass of spores.\" [dictyBase_REF:2530, GOC:devbiol, GOC:mtg_sensu]" . . "sorus development" . "sorus biosynthesis" . "sorus formation" . "spore head biosynthesis" . "spore head formation" . "spore head morphogenesis" . .