The genus Equisetum (Equisetaceae) in the flora of Mongolia
UDC 582.374.2+581.95(517)
Abstract
Based on field surveys and herbarium specimens, we studied the genus Equisetum in Mongolia, where it has not been thoroughly studied previously. A total of nine species of Equisetum belonging to two subgenera are confirmed for the flora of Mongolia. We found several new distribution points of some Equisetum species in the phytogeographical regions: E. variegatum for the Khangai, Khovd and Mongolian Altai regions, E. heymale for Khentei region, and E. pratense for Middle Khalkh region. Furthermore, we evaulated the regional conservation status for each Equisetum species by using GeoCAT programm. Based on our results, according to the IUCN criteria, E. ramosissimum is categorized as Critically Endangered (CR), E. variegatum as Endangered (EN), E. sylvaticum as Vulnerable (VU), and E. hyemale as Near Threatened (NT), while the remaining five species (E. arvense, E. fluviatile, E. palustre, E. pratense, and E. scirpoides) are categorized as Least Concern (LC). An identification key, information on the regional conservation status, as well as distribution maps and photographs of each species are provided.
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