Descripteur : Direction of carcass canals tubes (OW/SW)

Type du descripteur : 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/canals.

Carcass: Part of wall on intervallum side.

OW: Outer wall.

SW: Single wall.

../images/019orientation_canalOW.png

Direction of carcass canals tubes (OW/SW)


Downwardly opening

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

../images/CANAUX_EN_S.png

Downwardly projecting

Horizontal to upwardly opening

Some canals tubes have a horizontal opening, others have an upwardly opening.

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

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

../images/canaux_droits_me.png

Upwardly projecting

../images/ataxiocyathus_grandis1I.png

Horizontal opening

../images/ataxiocyathus_grandis2I.png

Horizontal opening


Hiérarchie

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

Fait partie des groupes