Re-examination of a Sphaerotermia and a Gaillonella (Bacillariophyceae) from the Ehrenberg Collection, Berlin (Germany)

0357616 - BÚ 2011 RIV DE eng J - Journal Article
Houk, Václav
Re-examination of a Sphaerotermia and a Gaillonella (Bacillariophyceae) from the Ehrenberg Collection, Berlin (Germany).
Diatom Research. Roč. 25, č. 2 (2010), s. 293-306. ISSN 0269-249X. E-ISSN 2159-8347
Institutional research plan: CEZ:AV0Z60050516
Keywords : centric diatoms * valve morphology * taxonomy
Subject RIV: EF - Botanics
Impact factor: 1.030, year: 2010

Two taxa presented by Ehrenberg as belonging to the genera Sphaerotermia Ehrenberg and Gaillonella Bory, Sphaerotermia horologium Ehrenberg and Gaillonella californica, from mica-strips of the Ehrenberg Collection deposited at the Natural History Museum, Humboldt University of Berlin (Germany), have been observed and investigated in the light microscope (LM) to show their morphologies in LM, with a higher resolution than that of Ehrenberg, and possibly to clarify their taxonomy. Raw material from the respective mica-strips was also observed, but no diatoms were found. The observed valve morphologies of these taxa are discussed and compared with those of closely related taxa and two new combinations, Miosira horologium (Ehrenberg) comb. nov. and Aulacoseira californica (Ehrenberg) comb. nov., are suggested.
Permanent Link: http://hdl.handle.net/11104/0195850