Draft:Gregorella humida
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Gregorella humida is a species of lichen in the family Arctomiaceae that can be found in soils of the United States, Fennoscandia, the Untied Kingdom, Continental Europe, and Turkey[1]. It is described as a crust-like thallus that varies in color from various forms of greys to dark brown [1][2].
Taxonomy
[edit]Gregorella humida was first described in Finland in 1871 as Biatora humida. Later on the species was transferred, based on its morphology, to Moelleropsis humida under the family Pannariaceae[1]. It was only in 2002 was the species molecular data published and showed that it was not related to the species type of Moelleropsis, M. nebulosa, or the family Pannariaceae. It was found closely related to Arctomia and Wawea and finally transferred to the monotypic genus Gregorella[2].
The species has been collected from soils in Oregon, United States to the Eurasian continent, specifically Fennoscandia, the Untied Kingdom, Continental Europe, and Turkey[1]. Types of soils the lichen species have been found in includes sandy, loamy, disturbed, and bare soil[1][2].
Description
[edit]Scientists describe Gregorella humida from blue, brown, or olive greys to dark brown[1][2]. With the naked eye the lichen species can be described as having a miniscule granular, crust-like thallus. However, under the microscope, the species demonstrates a branch-like growth pattern and contains cyanobacteria. The granules of the species "...are completely covered with roundish to irregular parenchyma-like cells (3)5–6(8) µm diam, which envelope the cyanobiont clusters..."[1].
References
[edit]- ^ a b c d e f g McCune, Bruce; Stone, Daphne (April 2020). "Gregorella, a cyanobacterial pioneer on soil, new to North America". ResearchGate. The American Bryological and Lichenological. Retrieved 11/10/2024.
{{cite web}}: Check date values in:|access-date=(help) - ^ a b c d Vondrák, Jan; Palice, Zdeněk; Mareš, Jan; Kocourková, Jana (06-2013). "Two Superficially Similar Lichen Crusts, Gregorella humida and Moelleropsis nebulosa, and a Description of the New Lichenicolous Fungus Llimoniella gregorellae". Herzogia. 26: 31–48. doi:10.13158/heia.26.1.2013.31. Retrieved 11/10/2024.
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