Order Filicales

The Order Filicales bears several features which are common to a large number of ferns. In particular they are noted for leptosporangiate sporangia; homosporous spores; and a reduced prothallus. Two Families do diverge from the common characters in that they are heterosporous and live in aquatic habitats.

Morphology of Order Filicales

Family Osmundaceae

  1. Osmunda regalis

Family Polypodiaceae
  1. Adiantum pedatum
  2. Athyrium asplendoides
  3. Comptosorous rhizophyllus
  4. Cysopteris bulbifera
  5. Woodsia obtusa
  6. Dryopteris spinulosa
  7. Onoclea sensibilis
  8. Polystichum acrostichoides
  9. Pteridium aquilinum

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