Hypnum cupressiforme

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Hypnum cupressiforme
Hypnum cupressiforme0.jpg
Status TNC G5.svg
Secure  (NatureServe) [2]
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Division: Bryophyta
Class: Bryopsida
Subclass: Bryidae
Order: Hypnales
Family: Hypnaceae
Genus: Hypnum
Species:
H. cupressiforme
Binomial name
Hypnum cupressiforme

Hypnum cupressiforme, the cypress-leaved plaitmoss [3] or hypnum moss, is a common and widespread species of moss belonging to the genus Hypnum . It is found in all continents except Antarctica and occurs in a wide variety of habitats and climatic zones. It typically grows on tree trunks, logs, walls, rocks and other surfaces. It prefers acidic environments and is fairly tolerant of pollution. It was formerly used as a filling for pillows and mattresses; the association with sleep is the origin of the genus name Hypnum (from Greek Hypnos ).

Capsules Moos Baumstamm Ilz.jpg
Capsules

It is a small to medium-sized moss about 2–10 cm long. It is pleurocarpous, having prostrate, creeping stems which form smooth, dense mats. The stems are branched and covered in overlapping leaves giving the impression of a cypress tree. The stem leaves are long and thin measuring 1.0-2.1 mm by 0.3-0.6 mm. They are concave and sickle-shaped, tapering towards the tip. The branch leaves are smaller and narrower than those on the stems. The moss produces short, cylindrical and slightly curved capsules which contain the spores. The capsules are 1.7-2.4 mm long and have a lid-like operculum measuring 0.6-0.9 mm. They are borne on reddish-brown stalks which are 1-2.5 cm long. The moss is dioicous, having separate male and female plants. Hypnum cupressiforme is a highly variable species and numerous varieties have been described.

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References

  1. Sim-Sim, M. (2019). "Hypnum cupressiforme (Europe assessment)". IUCN Red List of Threatened Species . 2019: e.T87462895A87713959. Retrieved 17 July 2024.
  2. "Hypnum cupressiforme". NatureServe Explorer. Retrieved 17 July 2024.
  3. Edwards, Sean R. (2012). English Names for British Bryophytes. British Bryological Society Special Volume. Vol. 5 (4 ed.). Wootton, Northampton: British Bryological Society. ISBN   978-0-9561310-2-7. ISSN   0268-8034.