Polevova S.V., Avramenko A.S.
Moscow University Biological Sciences Bulletin 2013; 68(4): 221-226
The morphology and ultrastructure of modern and fossil spores were investigated using light, scanning, and transmission electron microscopes. We grouped spores into two groups according to ultrastructural features and sculptures of sporoderm: 1-exospore of Anemia and Klukia form the echini of sculpture; 2-exospore of Lygodium is smooth and perispore forms sculpture.
