Botanikai-Természetvédelmi Folyóirat

Journal of Pannonian Botany

Kitaibelia vol. 3 – no. 2. (1998) p.199-208.

A Botrychium virginianum (L.) Sw. kunfehértói állományának eredetéről
Bagi István
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Kivonat:

Contrary to Csiky's opinion (CSIKY 1997) there is no clear evidence against the hypothesis that Botrychium virginianum is a glacial or postglacial relic in its habitat at Kunfehértó. The historical, pedological and quartz surface examination data referred to, and as explained by CSIKY, do not exclude the possibility of the Botrychium being a native indigenous plant: The continuity of the forest (in which Botrychium lives) since the postglacial epoch cannot be refuted by evaluation of the historical data. The pedological studies describe soil profiles which refer to a long-standing leaching effect which might be due to the long continuity of forest. The eolic quartz grains could have blown in from the surrounding, treeless territories. At the same time, serious problems arise with the hypothesis that artificial colonization occured in times of forest revegetation. Problems arise from the complicated and very slow life cycle of the species, as well as from its total dependence on mycorrhizal symbionts. A source of further problems is the fact that Botrychium occurs only in deciduous forests, no single specimen living in pine plantations. This is in contradiction to CSIKY's theory on the immigration of the species (by way the soil-balls of pine saplings that originating in Austria). Several other phytogeographical, cenological and floristical considerations suggest - but do not prove - the indigenous character of the species.