Descriptor : Repartition of bracts on secondary sheath (IW)

Descriptor type : categorical

Bract: Plate stems from lintels which incompletely covering a single pore.

Lintel: Skeletal structure separating and bounding adjacent pores.

Additional sheath: Second part of a wall composed by two zones (carcass + sheath).

IW: Inner wall.

One bract covering one micropore

No bract on additional sheath

Hierarchy

Type of additional sheath (IW)
 |
 |_ Repartition of bracts on secondary sheath (IW)

Belongs to the groups