Callistophyton Plants: Root and Leaves | Gymnosperms | Botany
In this article we will discuss about the common parts of callistophyton plants. Stem: T.S. of Callistophyton stem shows a central angular parenchymatous pith surrounded by eustele. The stele is composed of a ring of 5 to 13 axial bundles (sympodia) forming leaf traces in 2/5 arrangement. Both mesarch and exarch primary bundles are reported, which are surrounded by thick [...]