IW short beams support microporous sheath

knowledge base : exist
structure : inner wall
Stipules : isn't included in the term
Carcass perforations: inner wall (IW) : Pores
Type of carcass pores (IW) : Simple
Relationship between rows of carcass pores and intersept (IW) : isn't included in the term
Relationship between rows of carcass pores and tabulae (IW) : isn't included in the term
Building of carcass perforations (IW) : isn't included in the term
Carcass external plates: inner carcass wall (IW) : isn't included in the term
Type of morphological tubes (IW) : isn't included in the term
Additional sheath : Present on inner wall
Type of additional sheath (IW) : Microporous sheath
Type of microporous sheath (IW) : Independent
Repartition of bracts on secondary sheath (IW) : isn't included in the term
Repartition of micropores (IW) : Regular