ASPLENIUM ×VOGELII (ASPLENIUM AZORICUM × A. TRICHOMANES SUBSP. QUADRIVALENS) (ASPLENIACEAE) A NEW ENDEMIC HYBRID SPLEENWORT FROM THE AZORES AND THE RELATIONSHIP AND ORIGINS OF ITS ENDEMIC PARENT, A. AZORICUM.

The hybrid Asplenium azoricum × A. trichomanes subsp. quadrivalens is reported for the first time and described here as A. ×vogelii. Chloroplast DNA sequences are utilised to identify the maternal parent and provide further information on the relationships and possible origin of its endemic parent, A. azoricum. While definitely known only from the type gathering, collected near Terra Chã, Terceira in 1996, there is considerable potential for this hybrid to be overlooked owing to the similarity and variability of its parents. [ABSTRACT FROM AUTHOR]