Hickory Flats peat moss and northern bog club moss. The five-rowed peat moss (Sphagnum quinquefanum) can be recognized by its rather short and stiff branches which appear angular because of the arrangement of its closely set leaves widely angled in 5 ranks. Red peat moss (Sphagnum rubellum) is a small reddish-coloured peat moss with tongue-shaped stem leaves. And northern bog club moss ("Lycopodiella inundata") has branches up to 10 cm high with narrow, pointed leaves 4–8 mm long. Hickory Flats provides a secluded habitat for a population of black bear ("Ursus americanus"). Since bears are shy and secretive, they are rarely seen.
Moss Antarctica and Russia, and a case is put forwards for Carboniferous mosses. It has further been claimed that tube-like fossils from the Silurian are the macerated remains of moss calyptræ. Mosses also appear to evolve 2–3 times slower than ferns, gymnosperms and angiosperms. Recent research show that ancient moss could explain why the Ordovician ice ages occurred. When the ancestors of today's moss started to spread on land 470 million years ago, they absorbed CO from the atmosphere and extracted minerals by secreting organic acids that dissolved the rocks they were growing on. These chemically altered rocks in turn reacted