P3E1R1I1D2I1A1L1
11 points
PERIDIAL is validvalid
PERIDIUM, the covering of the spore-bearing organ in many fungi [adj]
relating to a peridium, the envelope or coat of certain fungi [adj]
PERIDIUM, the covering of the spore-bearing organ in many fungi [adj]
relating to a peridium, the envelope or coat of certain fungi [adj]