ClipArt ETC
"Vertical section of Calamite, cut through node." -Taylor, 1904

Calamite

"Vertical section of Calamite, cut through node." -Taylor, 1904

"Transverse section of Calamite, showing cortical layer surrounding woody wedges." -Taylor, 1904

Calamite

"Transverse section of Calamite, showing cortical layer surrounding woody wedges." -Taylor, 1904

The bark of Sigillaria Groeseri, an extinct arborescent plant.

Sigillaria Bark

The bark of Sigillaria Groeseri, an extinct arborescent plant.