Leucobryum (Leucobryum moss)

White moss (Leucobryum) · 8/14/2009 · Nashua River Rail Trail, East Pepperell, Massachusetts · ≈ 9 × 6″ (23 × 16 cm) Species not yet identified

White moss (Leucobryum) · 8/14/2009 · Nashua River Rail Trail, East Pepperell, Massachusetts · ≈ 10 × 7″ (24 × 18 cm) Species not yet identified

Kingdom	Plantae	Plants, but not fungi, lichens, or algae (from Stearn's Botanical Latin)
Division	Bryophyta	Mosses
Subdivision	Musci	Mosses (all 12,000 of them)
Class	Bryopsida	Mosses with arthrodontous spore capsules, which is most of them
Subclass	Bryidae	Mosses with a double peristome with alternating tooth segments
Order	Dicranales	An order of haplolepideous mosses, having only one circle of teeth from a column of cells
Family	Leucobryaceae	Cushion mosses
Genus	Leucobryum	From the Greek leukos, “white,” and bryon, “moss.”