Descripteur : Shape of carcass canals tubes zone A (IW)
Type du descripteur : categorical
NB: Look tube shape not opening shape.
Zone A: 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.
IW: Inner wall.
- Straight
-
Straight
Straight
- Straight to waved
-
Some tubes are straight, others are waved.
- Waved
-
Waved
Waved
- S-shaped
-
S-shaped: Resembles S in longitudinal section.
S-shaped
- V-shaped
-
V-shaped: Resembles V in longitudinal section.
V-shaped
- Inverted V-shaped
-
Inverted V-shaped: Resembles A in longitudinal section.
Inverted V-shaped
Hiérarchie
Type of carcass perforations: inner wall (IW) | |_ Shape of carcass canals tubes zone A (IW)