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See list of 2 genera in this family

The report of Osmunda claytoniana ×Osmundastrum cinnamomeum by Sorrie and Somers (1999) was based on a collection of Osmunda claytonianaAhles 83707 ( MASS!). Reference: Whetstone and Atkinson (1993).

  • 1a. Fertile leaves with monomorphic leaflets, borne on a blade separate from the vegetative leaves; axil of leaflets on vegetative leaves bearing a tuft of white hairs (these turning light brown with age) on the abaxial side
  • 1b. Fertile leaves with dimorphic leaflets—some leaflets bearing sporangia and some not; 
axil of vegetative leaflets without a tuft of hairs

 Show photos of:   Each photo represents one genus in this family.