Original paper
New benthic araphid pennate diatom genus Florellopsis (gen. nov.) and implications for the classification of genera in the orders Cyclophorales and Protoraphidales (Fragilariophyceae)
Ashworth, Matt P.; Theriot, Edward C.; Manning, Schonna R.
Nova Hedwigia Band 120 Heft 1-4 (2024), p. 187 - 198
22 references
published: Apr 30, 2024
published online: Jan 29, 2025
manuscript accepted: Jan 2, 2025
manuscript received: May 31, 2024
DOI: 10.1127/nova_hedwigia/2025/1007
ArtNo. ESP050012031010, Price: 29.00 €
Abstract
The diatom order Cyclophorales F.E. Round & R.M. Crawford, emend Lobban & Ashworth has grown significantly in terms of morphological and taxonomic diversity over the past decade. The increased morphological diversity included in the order has led to complications regarding the classification of the included taxa, as several were included largely due to phylogenetic analysis of DNA sequence data rather than morphology. We encountered an undescribed marine benthic diatom that shared molecular phylogenetic signal and morphological characters with certain taxa in the Cyclophorales–specifically, the “U”-shaped array of linear pores at the valve apices of Florella intermedia (Grunow) Lobban, Navarro & Schuster. In formally describing this diatom as a novel genus and species, Florellopsis ayopee Ashworth, we take the opportunity to examine the morphological diversity and molecular phylogeny in the Cyclophorales in the effort to classify this novel genus.
Keywords
marine diatoms • benthic diatoms • phylogeny • Cyclophorales • Florella