Abstract
Asplenium adulterinum Milde is one of the rarest and most threatened representatives of the Aspleniaceae family in the Carpathians. Botanical literature mentioned the ladder spleenwort in many localities in South-Eastern Carpathians in the past, but during the last decades the species has not been collected and deposited in public herbaria by any botanist. All existing herbarium material in Romanian herbaria (including Asplenium trichomanes and A. trichomanes-ramosum) was revised and all available information from botanical literature was critically compiled in order to clarify the distribution of Asplenium adulterinum in the South-Eastern Carpathians. After almost 80 years since the first mention of the species in the Carpathians, this paper reports the recent identification of Asplenium adulterinum in three new locations in South-Eastern Carpathians (Ţesna Valley, Vânturătoarea Waterfall and Şugăului Gorges).
Highlights
Asplenium L. is a relatively large genus of Aspleniaceae family with about 700 species. They are one of the most widespread fern groups and occur in temperate and tropical regions of all continents, except Antarctica (Schneider et al, 2004). Thirtyone species of this genus are present in European flora (Crabbe et al, 1993), ten of these species occurring in Romanian flora (Asplenium scolopendrium L., A. septentrionale (L.) Hoffm., A. trichomanes L., A. trichomanes-ramosum L., A. adulterinum Milde, A. ruta-muraria L., A. lepidum C
The present study focuses on Asplenium adulterinum Milde, one of the rarest and most threatened plant species in the Romanian flora
All existing herbarium material was revised and all available information from botanical literature was critically compiled in order to clarify the distribution of Asplenium adulterinum in the SouthEastern Carpathians
Summary
Asplenium L. is a relatively large genus of Aspleniaceae family with about 700 species They are one of the most widespread fern groups and occur in temperate and tropical regions of all continents, except Antarctica (Schneider et al, 2004). The present study focuses on Asplenium adulterinum Milde, one of the rarest and most threatened plant species in the Romanian flora. In the Romanian botanical literature Asplenium adulterinum is considered a rare species (Boşcaiu et al, 1994; Oltean et al, 1994; Oprea, 2005) or placed in the “Insufficiently Known” (K) sozological category (Dihoru and Dihoru, 1994). All existing herbarium material (including Asplenium trichomanes and A. trichomanes-ramosum) was revised and all available information from botanical literature was critically compiled in order to clarify the distribution of Asplenium adulterinum in the SouthEastern Carpathians.
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