Anomodon attenuatus (Tree-skirt moss)

4/29/2015 · Beaver Brook Conservation Area, Hollis, New Hampshire · ≈ 6 × 3½″ (14 × 9.6 cm)

6/2/2013 · Beaver Brook Conservation Area, Hollis, New Hampshire · ≈ 10 × 7″ (25 × 16 cm)

5/22/2010 · Garden in the Woods, Framingham, Massachusetts · ≈ 1½ × 1′ (52 × 34 cm)

6/2/2013 · Beaver Brook Conservation Area, Hollis, New Hampshire · ≈ 1¼ × 1½″ (3.4 × 3.8 cm)

9/14/2010 · Garden in the Woods, Framingham, Massachusetts · ≈ 15 × 10″ (39 × 26 cm)

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	Leucodontales	Also called hypnales, if that’s any help
Family	Anomodontaceae	Anomodon, haplohymenium, and herpetineuron mosses
Genus	Anomodon	Means “irregular teeth”
Species	attenuatus	Means “weakened, reduced, narrowed to a point”