Table 4. Loading coefficients for each Principal Component Axis. Large absolute values reflect stronger correlation (importance) for a character on each axis. Blue highlights positive values on an axis (large original values plot high on axis), and red highlights negative values on an axis (large original values plot low on axis).
 
 
Principal Component Axis
 
Character Name
1
2
3
4
5
6
7
8
9
Character Abbrev.
 
Branch Width
0.30
-0.213
0.195
-0.622
0.102
-0.640
0.107
-0.082
0.004
BW
 
Dissepiment Width
0.29
-0.461
0.053
-0.328
-0.553
0.498
-0.105
0.166
-0.040
DW
 
Fenestrule Length
0.40
0.172
-0.452
-0.069
0.134
0.065
0.087
0.274
0.706
FL
 
Fenestrule Width
0.39
0.123
-0.369
-0.013
0.079
0.005
-0.648
-0.461
-0.242
FW
 
Aperture Diameter
0.28
-0.494
0.311
0.296
0.492
0.252
0.134
-0.362
0.200
AD
 
Aperture spacing
 
Lateral across
0.37
0.352
0.233
-0.150
0.426
0.292
0.064
0.441
-0.445
ALB
 
Branch
 
Aperture spacing
 
Along Branch
0.30
0.535
0.318
0.009
-0.386
0.109
0.350
-0.478
0.112
AAB
 
Node Diameter
0.32
-0.002
0.408
0.506
-0.250
-0.362
-0.378
0.349
0.122
ND
 
Node Spacing
0.34
-0.206
-0.447
0.367
-0.160
-0.214
0.512
0.045
-0.419
NS