1. INTRODUCTION: PTERIDOPHYTES, 2. CLASSIFICATION: PTERIDOPHYTES,
3. ALTERNATION OF GENERATIONS IN PTERIDOPHYTES, 4. RHYNIA, 5. LYCOPODIUM, 6. SELAGINELLA,
7. EQUISETUM, 8. PTERIS, 9. MARSILEA, 10. STELAR SYSTEM IN PTERIDOPHYTES, 11. HETEROSPORY
AND SEED HABIT, 12. ECONOMIC IMPORTANCE OF PTERIDOPHYTES
