Preliminary Course
Botany. Architectural Analysis
Axis typology.
Axis typology pictograms
-
On the plant axis, growth expressions are reflected by morphological markers, such as bud scales,
short internodes, reduced leaves, etc.
- The flowering position
- The growth pattern,
- The branching pattern,
- The axis geometrical pattern
The knowledge of such morphological markers is very helpful for biologists and foresters for a posteriori stem growth analysis.
Those markers characterize phytomers and axes according to four major groups of simple morphological features, which are:
The morphological features are with associated specific pictograms, as shown below, characterizing various states related to each of them.
Axis morphological traits (Pictograms Y. Caraglio, CIRAD)
Top: vegetative or flowering
Middle: phyllotaxis and plagiotropy
Bottom left: growth (rhythmic vs continuous)
Bottom right: branching (immediate vs delayed, rhythmic vs continuous)