Investigating the generic status of some Australian grammitid ferns (Polypodiaceae subfam. Grammitidoideae) leads to the recognition of another new and small grammitid genus, Phaneroloma
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2026-04
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Australian Systematic Botany
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CSIRO Publishing
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School of BioSciences
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Journal Article
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Armstrong, G., Ohlsen, D., Perrie, L., Shepherd, L., Orel, H. & Bayly, M. (2026). Investigating the generic status of some Australian grammitid ferns (Polypodiaceae subfam. Grammitidoideae) leads to the recognition of another new and small grammitid genus, Phaneroloma. Australian Systematic Botany, 39 (2), https://doi.org/10.1071/sb25007.
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Abstract
The phylogenetic positions of two species from Lord Howe Island assigned to the genus Grammitis, G. nudicarpa and G. pulchella, and two small Australian grammitid fern genera, Aenigmatogrammitis and Howeogrammitis, were investigated through phylogenetic analyses of atpB, rbcL, rps4–trnS, trnG–trnR and trnL–trnF chloroplast sequences. Grammitis nudicarpa and G. pulchella were shown to be misplaced in Grammitis, being placed in a clade comprising Archigrammitis, Oreogrammitis and Prosaptia instead. A new genus, Phaneroloma, is described to accommodate these two species. Descriptions of both Phaneroloma species and an identification key to the species are provided. The phylogenetic positions of Aenigmatogrammitis stenophylla and Howeogrammitis diminuta previously reported with fewer chloroplast markers were here confirmed, and the large divergences separating them from their closest relatives support their continued recognition as separate genera.