In this article we will discuss about the comparative morphology of pteridophyta:- 1. Stele 2. Root 3. Leaf 4. Sporocarp. Stele: The vascular elements of the primary axes of practically all pteridophytes consist of a solid core of xylem surrounded by phloem. Archiac Psilophytales such as Rhynia and Horneophyton and present-day Psilotales, Psilotum has retained […]