Biology:Polytrichaceae

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Short description: Family of mosses

Polytrichaceae
Temporal range: Valanginian–Recent
Polytrichum.commune.2.jpg
Polytrichum commune
Scientific classification e
Kingdom: Plantae
Division: Bryophyta
Class: Polytrichopsida
Doweld
Order: Polytrichales
M. Fleisch.
Family: Polytrichaceae
Schwägr.
Genera

See text.

Polytrichaceae is a common family of mosses. Members of this family tend to be larger than other mosses with a thickened central stem and a rhizome. The leaves have a midrib that bears photosynthetic lamellae on the upper surface. Species in this group are dioicous. Another characteristic that identifies them is that they have from 32 to 64 peristome teeth in their sporangium.

Classification

Template:Moss phylogeny

Genera

Atrichum undulatum


Extinct genera

  • Eopolytrichum Konopka et al., 1997 Cretaceous (Campanian); Gaillard Formation, Georgia, USA
  • Meantoinea Bippus et al., 2017 Cretaceous (Valanginian); Apple Bay locality, Vancouver Island, British Columbia, Canada
  • Polytrichites Britton, 1926 Miocene; Latah Formation, Washington, USA[1]

References

  1. Knowlton, F.H. (1926). Shorter contributions to general geology, 1925 (Report). Professional Paper. 140. United States Geological Survey. pp. 17–55, plates VIII-XXXI. doi:10.3133/pp140A. https://pubs.usgs.gov/pp/0140a/report.pdf. 

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