smaller pores clustered over the larger

knowledge base : exist
structure : outer wall
Carcass perforations: outer wall or single wall (OW/SW) : Pores
Type of carcass pores (OW/SW) : Simple
Size of carcass pores (OW/SW) : 2 distinct sizes
Distribution of carcass pores (OW/SW) : Small pores clustered around large ones
Repartition of carcass pores (OW/SW) : isn't included in the term
Relationship between rows of carcass pores and intersept (OW/SW) : 2 ; more than 2
Carcass bumps: outer wall or single wall (OW/SW) : None
Carcass external plates: outer wall or single wall (OW/SW) : None
Stipules : isn't included in the term
Type of morphological tubes (OW/SW) : None
Additional sheath : isn't included in the term