outer wall with independent microporous sheath

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) : Simple
Size of carcass pores (OW/SW) : Uniform size
Repartition of carcass pores (OW/SW) : Regular repartition
Repartition types of carcass pores (OW/SW) : Straight rows of pores
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) : isn't included in the term
Stipules : isn't included in the term
Type of morphological tubes (OW/SW) : isn't included in the term
Additional sheath : Present on outer wall (or single wall)
Type of additional sheath (OW/SW) : Microporous sheath
Type of microporous sheath (OW/SW) : Independent
Repartition of bracts on additional sheath (OW/SW) : isn't included in the term
Repartition of micropores (OW/SW) : Regular