Common Haircap

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How to read a taxobox
Polytrichum commune

Scientific classification
Kingdom: Plantae
Division: Bryophyta
Class: Bryopsida
Subclass: Polytrichidae
Order: Polytrichales
Family: Polytrichaceae
Genus: Polytrichum
Species: P. commune
Binomial name
Polytrichum commune
Hedw.

Polytrichum commune (Common Haircap Moss or Common Hair Moss) is a species of moss with a cosmopolitan distribution in regions with high humidity and rainfall, where it grows in bogs, wet heathland and beside forest streams.

It is a large moss, forming dense cushions up to 40 cm deep. The stems are slender, about 1 mm diameter, with spirally-arranged leaves 5-10 mm long and 0.5 mm broad. The spores are produced in oval capsules 3-4 mm long, held above the plant on slender, wiry 3-5 cm long stems.