Bryum

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Bryum
Bryum argenteum 2005.03.29 15.52.55.jpg
Bryum argenteum
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Division: Bryophyta
Class: Bryopsida
Subclass: Bryidae
Order: Bryales
Family: Bryaceae
Genus: Bryum
Hedw.
Species

List of Bryum species

Bryum is a genus of mosses in the family Bryaceae. It was considered the largest genus of mosses, in terms of the number of species (over 1000), until it was split into three separate genera in a 2005 publication. [1] As of 2013, the classification of both Bryum and the family Bryaceae to which it belongs underwent significant changes based on DNA studies. [2]

Contents

Description

Bryum is a polyphyletic genus that has high morphological variation. Bryum species generally have shorter laminal cells with short, thick, and rounded stems. [3] All Bryum species exhibit narrowed cells at the margins. Bryum species can be identified through patterns of asexual reproduction, coloration features of the stem and leaf base, and the strength of the leaf border. [2]

History

The genus was described by Johann Hedwig in 1801, with the name being derived from the Greek word for moss. [4] [3]

Botanist John R. Spence published a reclassification of the genus in 2005. The genus Ptychostomum was reinstated, while the genera Leptostomopsis , and Plagiobryoides were created. [1] The genera Gemmabryum , Imbribryum , and Rosulabryum were later published to further divide Bryum. [5]

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<i>Polytrichum commune</i> Species of moss

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<i>Warnstorfia exannulata</i>

Warnstorfia exannulata is a leafy branching wetland moss in the genus Warnstorfia within the family Amblystegiaceae and class Bryopsida. This bryopsida moss is also known as ringless-hook moss or Warnstorfia moss. It is the most common species of the genus in wetland environments and can be difficult to distinguish from others within the genus. It grows in acidic soils like fens and bogs, or in freshwater pools and lakes.

<i>Bartramia</i> (plant) Genus of mosses

Bartramia is a genus of mosses in the family Bartramiaceae. The genus was first formally described by Johann Hedwig in 1801. There are about 72 species, usually growing on soil, sometimes on rocks, in many habitats in many parts of the world, although tropical species are only found at high altitudes. Nine species occur in Australia but only three of these are endemic to that continent.

<i>Bryum argenteum</i> Species of moss

Bryum argenteum, the silvergreen bryum moss or silvery thread moss, is a species of moss in the family Bryaceae. It is one of the most common mosses of urban areas and can be easily recognized without a microscope.

<i>Ptychostomum pseudotriquetrum</i> Species of moss

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Polytrichastrum formosum, commonly known as the bank haircap moss, is a species of moss belonging to the family Polytrichaceae.

References

  1. 1 2 New genera and combinations in Bryaceae (Bryales, Musci) for North America, J. R. Spence, Phytologia 87: 15-28 (2005)
  2. 1 2 Genus Bryum, California Moss eFlora, Jepson eFlora for CA Vascular Plants, University Herbarium, University of California,
  3. 1 2 "Bryum". eFloras. Flora of North America. Retrieved 26 October 2019.
  4. Sp. Musc. Frond. 178, plate 42, figs. 8-12; plates 43, 44. 1801
  5. Spence, John R. (April 2007). "Nomenclatural changes in the Bryaceae (Bryopsida) for North America II" (PDF). Phytologia. 89 (1): 110–114. doi: 10.5962/bhl.part.24163 .