Their gametophytes tend to die after their sporophytes detach to disperse spores, a process which is  aided by the presence of springy sporangia.
The most abundant genus within this phylum or subdivision is commonly known as Bracken. Members of that genus  often play an important role in succession in subtropical regions and are particularly resilient weeds because of their  sturdy rhizomes. Their gametophytes tend to die after their sporophytes detach to disperse spores, a process which is  aided by the presence of springy sporangia. Members of this group are notable for possessing megaphylls, unlike other  seedless vascular plants, and their leaves, or fronds, can only open after their fiddleheads uncurl. FTP, name these  seedless vascular plants.
The most abundant genus within this phylum or subdivision is commonly known as Bracken.
ferns (also accept Pteridophyta or Filicophyta)