outer wall concentrically porous

knowledge base : exist
structure : number of wall ; outer wall
Number of walls : 2
Structure of outer carcass wall (OW/SW) : Carcass wall well defined
Structure of inner carcass wall (IW) : isn't included in the term
Carcass perforations: outer wall or single wall (OW/SW) : Pores
Type of carcass pores (OW/SW) : Subdivided
Size of carcass pores (OW/SW) : Uniform size
Repartition of carcass pores (OW/SW) : Regular repartition
Repartition types of carcass pores (OW/SW) : Pores grouped into clusters
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 : None
Type of morphological tubes (OW/SW) : None
Additional sheath : isn't included in the term