Lower vascular plants include divisions Lycophyta, Sphenophyta, and Pterophyta. Division Lycophyta includes club mosses and ground pines. Sporophytes of these have stems covered with small, scaly leaves. Sporangia appear on the upper surface of the leaves and are structures that produce spores. Lycopods have small leaves that each contains one vein that brings water to the leaf from the roots and carries away extra food. Division Sphenophyta is made up of horsetails or scouring rushes. …
