In the genus Euphorbia, each small, heart-shaped leaf is subtended by a pair of hard, long stipular spines, which arm the ribs of this succulent stem. The leaf blade is vestigial and abscises within several weeks.
In the genus Euphorbia, each small, heart-shaped leaf is subtended by a pair of hard, long stipular spines, which arm the ribs of this succulent stem. The leaf blade is vestigial and abscises within several weeks.