Fig. 5. Biplot representation of the scores on the first two (three for P. johannensis) axes of the principal component analysis of 35 morphological characters of Pleurothallis adamantinensis (A), P. fabiobarrosii (B), P. ochreata (C), P. teres (D) and P. johannensis (E and F). See Table 1 for population codes and Table 2 for character codes. Percentage of variance accumulated on the first two axes = 40·37 (A; first axis = 27·52; second axis = 12·85), 41·06 (B; first axis = 28·12; second axis = 12·94), 41·94 (C; first axis = 26·27; second axis = 15·67) and 33·84 (first axis = 21·03; second axis = 12·81). Percentage of variance accumulated on the first three axes of P. johannensis = 43·25 (first axis = 18·25; second axis = 13·80; third axis = 11·20).