Descripteur : Presence of stipules (IW)

Type du descripteur : categorical

Stipule: Leaflike appendage arising from canal-bract junction in a wall of inverted-V or V-shaped appearance.

Canal: Pore modified by skeletal structure thikening or by lintels streching. Canal length is greater than perforation diameter.

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

Lintel: Skeletal structure separating and bounding adjacent pores/canals.

IW: Inner wall.


Presence of stipules (IW)



Fait partie des groupes