Descriptor : Direction of carcass canals (OW/SW)

Descriptor type : categorical

NB: Convention: Tube begins on intervallum side.

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

Lintel: Skeletal structure separating and bounding adjacent pores.

OW: Outer wall.

SW: Single wall.

Carcass: Part of wall on intervallum side.


Upwardly opening

Upwardly opening: Opening on intervallum side is lower down than the other one.

../images/canaux_droits_me.png

Upwardly projecting

Downwardly opening

Downwardly opening: Opening on intervallum side is higher than the other one.

../images/CANAUX_EN_S.png

Downwardly projecting

Horizontal opening

Horizontal opening: Opening on intervallum side is as high as the other one.

../images/ataxiocyathus_grandis1I.png

Horizontal opening

../images/ataxiocyathus_grandis2I.png

Horizontal opening


Hierarchy

Carcass perforations: outer wall or single wall (OW/SW)
 |
 |_ Direction of carcass canals (OW/SW)

Belongs to the groups