Ptilium is a genus of mosses with very broad worldwide occurrence. This genus is within the family Hypnaceae,* in the class Bryopsida, subclass Bryidae and order Hypnales.
Ecology Some of these species occur on the floor of Canadian boreal forests; an example of this occurrence is within the black spruce/feathermoss climax forest, often having moderately dense canopy and featuring a forest floor of feathermosses including, according to Hogan, Hylocomium splendens, Pleurozium schreberi and Ptilium crista-castrensis.C. Michael Hogan. 2008. Black Spruce: Picea mariana, GlobalTwitcher.com, ed. Nicklas Stromberg
See also Feather moss
References