RT Journal Article
SR Electronic
A1 Jüttner, Ingrid
A1 Wetzel, Carlos E.
A1 Van de Vijver, Bart
A1 Levkov, Zlatko
A1 Chudaev, Dmitry
A1 Williams, David M.
A1 Ector, Luc
T1 Investigation of the type material of Microneis gracillima, Navicula pyrenaica, Achnanthes amphicephala, Achnanthes thienemannii and Achnanthidium rostropyrenaicum (Achnanthidiaceae, Bacillariophyta) and additional populations of the species
JF Fottea
YR 2023
VO 23
IS 1
SP 122
OP 140
DO 10.5507/fot.2022.015
UL https://fottea.czechphycology.cz/artkey/fot-202301-0009.php
AB The historic type material of Microneis gracillima, Navicula pyrenaica, Achnanthes amphicephala, Achnanthes thienemannii and Achnanthidium rostropyrenaicum was investigated together with additional European populations of these species using light and scanning electron microscopy. The morphology of the species was compared to similar taxa. Achnanthes amphicephala is transferred to the genus Achnanthidium. The species are distinguished from each other in the shape of their poles and in valve outline. There are currently very few photographic records of the species, but our results suggest that these species are typical in base-rich, oligotrophic waters, and might be important indicator species for these habitats.