Plagiomnium affine

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Many-fruited thyme-moss
Plagiomnium affine 2005.08.22 11.21.37-p8220145.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Division: Bryophyta
Class: Bryopsida
Subclass: Bryidae
Order: Bryales
Family: Mniaceae
Genus: Plagiomnium
Species:
P. affine
Binomial name
Plagiomnium affine
Chloroplasts in leaf cells Plagiomnium affine laminazellen.jpeg
Chloroplasts in leaf cells

Plagiomnium affine, the many-fruited thyme-moss, [1] is a species of thyme-moss found in old-growth boreal forests in North America, Europe and Asia, growing in moist, but not wet, basic to slightly acidic micro-habitats in woodland and in turf. ('Plagio' = oblique, 'Mnium' = genus of thyme-moss)

Contents

Forming low lawns, stems are usually some 2 cm long, with densely packed leaves, though 10 cm long trailing infertile stems have only sparse leaves, smaller than those on fertile stems. Leaves strongly curled when dry, spreading plane when moist, the basal leaves broadly elliptic to rounded, those at the apex mucronate. Leaf edges of bases decurrent on stem, the upper leaves oblong to lingulate and constricted at base, toothed. [2] The leaf cells are arranged in diagonal rows and are easily discerned with a lens. [3]

Experiments to determine the efficacy of cryoprotectants show that the leaf covering is relatively impermeable to sugars, proline, and polyethylene glycols, but that dimethylsulfoxide is readily absorbed. Even so, it was found that frost hardiness is accompanied by a steep rise in cell sucrose concentration. [4] Cryoprotective compounds may play a major role in the frost tolerance of bryophytes. [5]

Synonyms

Related Research Articles

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<i>Meesia triquetra</i> Species of moss

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Bryum warneum, known as sea bryum or Warne's threadmoss, is a protected moss found in sandy coastal areas in temperate regions of Europe and is also recorded to have been found in the Himalaya, the Altai Mountains and in Quebec, Canada.

Tayloria lingulata, commonly known as lingulate dung moss, tongue-leaved gland-moss, or marsh collar-moss, is a moss found in montane habitats in the Northern Hemisphere including Europe, Asia and North America.

<i>Plagiomnium medium</i> Species of moss

Plagiomnium medium, commonly known as Alpine thyme-moss or intermediate plagiomnium moss, is a moss found in montane habitats in the Northern Hemisphere.

<i>Funaria hygrometrica</i> Species of moss

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<i>Dicranum scoparium</i> Species of moss

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<i>Bartramia pomiformis</i> Species of moss

Bartramia pomiformis, the common apple-moss, is a species of moss in the Bartramiaceae family. It is typically green or glaucous in hue, although sometimes it can appear yellowish. The stems extend from a half cm to 8 cm, with narrowly lanceolate to linear-lanceolate leaves 4 - 9 mm long. The leaves have a nerve and are toothed. They are curled when dry but stick out when moist.

Anomobryum julaceum, the slender silver-moss, is a species of bryophyte native to all continents except South America and Antarctica. A. julaceum is found widespread in the temperate regions of the Northern and Southern Hemispheres. Its capsules mature beginning in late fall and through the spring. It is most commonly found in wet crevices and on sandstone cliffs. Additional micro-habitats include tussock tundra with seeps and late snow melt areas and on granitic outcrops. In eastern North America it appears to be restricted to acid habitats, in the wet crevices of sandstone cliffs or other seepy niches. Overall, A. julaceum resembles species of the genus Pohlia, and its leaves are similar to those of Bryum argenteum; it can only be separated from Pohlia and Bryum using a microscope. Anomobryum julaceum can be distinguished from Bryum argenteum by its strongly julaceous, shiny leaves.

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

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<i>Tortula acaulon</i> Species of moss

Tortula acaulon, formerly Phascum cuspidatum, the cuspidate earth-moss or toothed phascum moss, is a moss with 3 mm leaves which forms green patches. It is very common and has a number of varieties in a wide range of habitats. The variety piliferum occurs on sandy soils near the sea.

<i>Mnium stellare</i> Species of moss

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<i>Sphagnum cuspidatum</i> Species of moss

Sphagnum cuspidatum, the feathery bogmoss, toothed sphagnum, or toothed peat moss, is a peat moss found commonly in Great Britain, Norway, Sweden, the eastern coast of the United States, and in Colombia.

<i>Pogonatum urnigerum</i> Species of moss

Pogonatum urnigerum is a species of moss in the family Polytrichaceae, commonly called urn haircap. The name comes from "urna" meaning "urn" and "gerere" meaning "to bear" which is believed to be a reference made towards the plant's wide-mouthed capsule. It can be found on gravelly banks or similar habitats and can be identified by the blue tinge to the overall green colour. The stem of this moss is wine red and it has rhizoids that keep the moss anchored to substrates. It is an acrocarpous moss that grows vertically with an archegonium borne at the top of each fertilized female gametophyte shoot which develops an erect sporophyte.

<i>Rhizomnium punctatum</i> Species of moss

Rhizomnium punctatum, also called dotted thyme-moss, is a small species in the genus Rhizomnium.

<i>Plagiomnium</i> Genus of mosses

Plagiomnium is a genus of mosses in the family Mniaceae. It was formerly a part of a more encompassing genus Mnium and in 1968 Finish bryologist Timo Juhani Koponen justified splitting the genus into a number of smaller genera.

<i>Plagiomnium cuspidatum</i> Species of moss

Plagiomnium cuspidatum, also known as toothed or “baby-tooth” plagiomnium moss and woodsy thyme-moss, is a species of thyme-moss that originated in North America, but can now also be found throughout Middle America, Africa, Northern and Southern Asia, and Europe. 

<i>Polytrichastrum formosum</i> Species of moss

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

<i>Mnium hornum</i> Species of moss

Mnium hornum, also known by the common names horn calcareous moss or swan's-neck thyme-moss, is a species of moss in the genus Mnium.

References

  1. 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.
  2. "BiotaTaiwanica". Archived from the original on 2012-09-11. Retrieved 2012-09-08.
  3. "British Bryological Society". Archived from the original on 2012-05-02. Retrieved 2012-09-08.
  4. Rütten, Dorothea; Santarius, Kurt A. (1992). "Relationship between frost tolerance and sugar concentration of various bryophytes in summer and winter". Oecologia. 91 (2): 260–265. Bibcode:1992Oecol..91..260R. doi:10.1007/BF00317794. PMID   28313467. S2CID   22891570.
  5. Rütten, Dorothea; Santarius, Kurt A. (1993). "Cryoprotection of Plagiomnium affine induced by various natural and artificial substances". Canadian Journal of Botany. 71 (6): 793–798. doi:10.1139/b93-091.