Distribution pattern, ecology and cytology of a globally threatened South indian endemic fern Elaphoglossum nilgiricum Krajina ex Sledge (Lomariopsidaceae: Pteridophyta)
DOI:
https://doi.org/10.36253/caryologia-2954Keywords:
cytology, Pteridophyte, ElaphoglossumAbstract
The Lomariopsidoid deer tongue fern genus Elaphoglossum, with about 600 epilithic species, is with either monomorphic or partially dimorphic simple fronds having acrostichoid sori. Due to the rare occurrence of fertile fronds, chromosome number reports are rarely available with the presence of maximum number of diploid species with n=41. Out of seven species of Elaphoglossum from India, five species are present on the Western Ghats of South India itself with three South Indian endemic species. The present study shows that the globally threatened endemic fern Elaphoglossum nilgiricum Krajina ex Sledge from the type locality Nilgiris, India is a tetraploid sexual with 2n=164 chromosomes. This is the first chromosome count for this globally threatened South Indian endemic fern E. nilgiricum Krajina ex Sledge.
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