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