The cap of B. auripes has a convex shape before flattening somewhat in maturity .
The cap of B. auripes attains a diameter of 4 -- 13 cm ( 1.6 -- 5.1 in ) .
The cap of B. auripes has a convex shape before flattening somewhat in maturity , and attains a diameter of 4 -- 13 cm ( 1.6 -- 5.1 in ) .