Seedless Plants Mosses and Liverworts Ferns and Horsetails Mosses and Liverworts • Small • Live on bark, rocks, and soil • No vascular system • Must live in places that are wet • No true roots, stems, or leaves Mosses Reproduction in mosses Liverworts Mosses and Liverworts • Live together in large groups • Covering soil or rocks in a mat of tiny green plants • Each moss has rhizoids (root-like structures) • Rhizoids help anchor the plant Importance of Mosses and Liverworts: • Usually the first plants to inhabit a new environment. • Form a thin layer of soil when they die. • They help hold the soil in place which prevents erosion. • Nesting material for birds. • Peat moss can be burned as fuel. Ferns Ferns • Can grow almost anywhere. • Have an underground stem called a rhizome. • Leaves are called fronds. Fern Reproduction Fern Frond • Top of frond • Underside of frond with sporangia Horsetails Horsetails • • • • Small vascular plants. Grow less than 1.3 meters tall. Grow in wet, marshy places. Pioneers used them to scrub pots and pans. Importance of Seedless Vascular Plants • Help form soil when they die. • Also hold soil in place to prevent erosion. • Ferns serve as house plants. • Some are cooked and eaten. • Formed coal.