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PTERIDOPHYTES 1. FERN 2. CLUB MOSS 3 and 4. HORSETAIL (Equlsetum), showing sterile (3) and fertile ',41 shoots.
PTERIDOPHYTES 1. FERN 2. CLUB MOSS 3 and 4. HORSETAIL (Equlsetum), showing sterile (3) and fertile ',41 shoots.