Curled, entwined thorny leaves make the shape of a heart. Black and white photograph
Photo by Karl Blossfeldt 1929 Cut-Leaf Teasel

Therein my thorny harp,

an anthem swept by heart,

on guard for thee.

Twin branches of a young leafy plant are entwined, appearing to be unfolding. At their joint below a small shoot reaches up
Photo by Karl Blossfeldt Valerian 1915–1925

The transfixed unfolding of my veins

within your offshoot;