Fissidens bushii

A common woodland moss with an unusual leaf anatomy. Each leaf has a flap on its adaxial surface that sheaths the base of the next leaf up.

Stems near Griffy Lake, 1/17/04.

Microscopic view of a leaf apex, 1/18/04.

Leaf margin on the acropetal two-layered portion of a leaf, 1/18/04.

Leaf margin on a unilaminate section, 1/18/04.