Geastrum marginatum Vittad., Monographia Lycoperdineorum:
20. 1842, ‘Geaster marginatus’Syn.: Geastrum minimum var. fumosicollum V.J. Staněk, Fl. ČSR, B-1, Gasteromycetes: 435, 786 (1958)
Closely related to G. granulosum and G. dolomiticum of Europe, with G. austrominimum in Australia. Formerly incorporated in “G. minimum”. (cfr Zamora et al. 2015)
A rare species of dry and sandy habitats; small and fragmented
population with appr 100 known localities. AOO < 200 km2
Habitat decline due to overgrowth caused by abandoned grazing or exploitation (tourism, road infrastructure, buildings)Suggested assessment VU (C1)
Western and Central Europe, SW USA (Arizona); it reaches its northernmost outposts on the island of Gotland in southern Sweden. No records from the boreal - arctic-alpine vegetation. One record from the Canary islands (la Gomera) cited by Zamora et al, (2015). An old record (1892) from Japan needs to be verified. e-DNA-records from India and Africa do not seem to be identical to the epitype from Spain. Some ambiguities in distribution records as this species was previously reported as G. minimum.
Currently not possible to estimate its population size as it was previously included and recorded in a broad concept of G. minimum.
It seems however to have a considerably smaller population and AOO than its sister species, G. granulosum. It has a fragmented population with strongholds in Spain and in coastal areas of the Netherlands and southern Sweden. One record from la Gomera (Canary islands). Verified N. American records only from Arizona.Estimated number of localities: 300
Estimated number of functional individuals: 600
Estimated number of mature individuals: 6000
Habitat decline due to overgrowth caused by abandoned grazing or exploitation (tourism, road infrastructure, buildings)AOO: <200 km2; EOO 23 000000 km2
Population Trend: Decreasing
Dry sandy grassland and light woodland in temperate and mediterranean vegetation on acidic - slightly basic sand. Thermophilous. In northern Europe only on exposed sandy habitats on or close to sea shores. Needs a sparse ground vegetation with mixture of naked sandy patches and low herbs, mosses and lichens.
Habitat decline caused by overgrowth due to decreased or ceased of grazing.
Small and fragmented population. Currently not possible to estimate its population as it was previously included in a broad concept of G. minimum.
Country | Trend | Redlisted |
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