Stelar Organisation in Vascular Plants (With Diagram)
In this article we will discuss about the two principal types of stelar organisation in vascular plants: 1. Protostele 2. Siphonostele. Type # 1. Protostele: It is the simplest and most primitive type of stele. The vascular cylinder consists of solid core of xylem surrounded by phloem, pericycle and endodermis. There is no pith e.g., Selaginella, Lycopodium, Lygodium, Gleichenia etc. [...]