List of four important early vascular plants:- 1. Cooksonia 2. Rhynia 3. Horneophyton 4. Trimerophyton. Early Vascular Plant # 1. Cooksonia: Cooksonia (Fig. 7.5) is the earliest known vascular plant, ranging in age from Middle- Upper Silurian to Lower Devonian. Several species of Cooksonia have been described from various places like Ireland, South Wales, Scotland, […]