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''Plagiomnium affine'', the many-fruited thyme-moss, 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)
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. The leaf cells are arranged in diagonal rows and are easily discerned with a lens.
Experiments to determine the efficacy of ''Cryoprotection of Plagiomnium affine induced by various natural and artificial substances''
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{{Taxonbar, from=Q146224 Flora of Bulgaria Mniaceae
''Plagiomnium affine'', the many-fruited thyme-moss, 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)
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. The leaf cells are arranged in diagonal rows and are easily discerned with a lens.
Experiments to determine the efficacy of cryoprotectants
A cryoprotectant is a substance used to protect biological tissue from freezing damage (i.e. that due to ice formation). Arctic and Antarctic insects, fish and amphibians create cryoprotectants ( antifreeze compounds and antifreeze proteins) in ...
show that the leaf covering is relatively impermeable to sugars, proline, and polyethylene glycols, but that dimethylsulfoxide
Dimethyl sulfoxide (DMSO) is an organosulfur compound with the formula ( CH3)2. This colorless liquid is the sulfoxide most widely used commercially. It is an important polar aprotic solvent that dissolves both polar and nonpolar compounds and ...
is readily absorbed.
Even so, it was found that frost hardiness is accompanied by a steep rise in cell sucrose concentration.
Cryoprotective compounds may play a major role in the frost tolerance of bryophytes./ref>
Synonyms
*''Astrophyllum cuspidatum'' Lindb. *''Bryum aciphyllum'' Voit *''Bryum affine'' (Blandow ex Funck) Brid. *''Mnium affine'' Blandow ex Funck *''Mnium cuspidatum'' Neck. ex Lindb. *''Mnium cuspidatum'' var. ''affine'' (Blandow ex Funck) Sommerf.References
External links
{{Taxonbar, from=Q146224 Flora of Bulgaria Mniaceae