Table 2: Eigenvalues, cumulative percent variation, and eigenvectors of the first three principal components axes for the eight architecture variables of longistylous and brevistylous P. rigida inflorescences.

Axis 1Axis 2Axis 3

Eigenvalue 3.246 1.622 0.883
Percent variation 20.27
Percent variation as expected by the broken stick model 33.97 21.47 15.22
Eigenvectors
 1st branching−0.2123 0.3369 −0.4324
 2nd branching 0.2382 0.5445 0.2173
 3rd branching 0.5034 0.0770 0.0039
 4th branching 0.4984 −0.1012−0.1052
 5th branching 0.4591 0.0212 −0.4433
 6th branching 0.1925 −0.2925 0.6737
 Branch length 0.1218 −0.6626−0.3186
 Structures 0.3658 0.2208 0.0536