Kulikovskiy, Lange-Bertalot and Witkowski 2013 Category: Monoraphid
TYPE SPECIES: Gliwiczia tenuis Kulikovskiy, Lange-Bertalot and Witkowski
Gliwiczia was established in 2013 to accommodate Achnanthes/Planothidium calcar and similar species. This genus has monoraphid frustules with a slightly concave raphe valve and almost flat, rapheless valve. Valves are elliptic. Both valves bear an internal hood or cavum and a stauros. Striae and areolae are considerably more dense and smaller on the raphe valve as compared to the rapheless valve. The raphe is straight, but its distal ends are slightly turned to opposite sides. Terminal raphe fissures are absent. External proximal raphe ends are slightly expanded, internal ends are non-coaxial as in all Achnanthidiaceae.
Gliwiczia is mostly found in cold oligotrophic waters. So far, only one species, G. calcar has been reported from North America.
Cite This Page:
Potapova, M. (2016). Gliwiczia. In Diatoms of the United States. Retrieved March 25, 2017, from http://westerndiatoms.colorado.edu/taxa/genus/gliwiczia