a.1.(Bot.) Concealed within the base of the petiole, as the leaf buds of the plane tree.
References in periodicals archive ?
47 mm; Petiole height (maximum height of petiole in lateral view, not including subpetiolar process) 0.
Subpetiolar process produced as anterior spine directed forward, spine normally not visible in mounted specimens.
Subpetiolar process produced as small spine or tooth followed by longitudinal carina.