Leaf morphology
In PCA of leaf morphologies, species P, species G, and ecotype SD
exhibited distinct distributions (Fig. 5a). Most C. subpubescensecotypes did not show independent distributions, whereas ecotype SH
showed a relatively narrow distribution but was included in the ecotype
ST distribution. The leaves of species P were characterized as small,
round, remarkably hairy, and thick. Species G possessed small,
elongated, and moderately thick leaves lacking hair (Fig. S11). Ecotype
SD showed small, round leaves, similar to those of species P, but with a
significantly lower hair mass and smaller leaf thickness.
DISCUSSION