caa a22 4500 378941488 CHVBK 20180305123653.0 cr unu---uuuuu 161128e20040712xx s 000 0 eng 10.1515/BOT.2004.025 doi (NATIONALLICENCE)gruyter-10.1515/BOT.2004.025 Thalassiosira fryxelliae nov. spec. (Bacillariophyceae) from Argentinian coastal waters [Elektronische Daten] [Inés Sunesen, Eugenia A. Sar] The new marine nanoplanktonic diatom, Thalassiosira fryxelliae, is described with light and scanning electron microscopy from material collected in Argentinian coastal waters. T. fryxelliae is a morphologically distinctive species with: 1) cells embedded in irregular gelatinous masses, 2) absence of central, sub-central and scattered strutted processes on the valve surface, 3) one marginal ring of strutted processes with external tubes, 4) one marginal labiate process included in the ring of the strutted processes, 5) areolation pattern variable linear, sublinear, eccentric or irregular. Externally, the marginal strutted processes have double tubes, at least in the distal part, cut distally and with the half-cylinder bent vertically with crenulated distal edges and the labiate process has a simple tube. Internally, the strutted processes are short with four operculate satellite pores and the labiate process is sessile and radially located. Thalassiosira fryxelliae is similar to T. angulata and T. nanolineata in morphology and distribution pattern of the marginal strutted processes and in the location of the labiate process and to T. leptopus and some specimens of T. guillardii and T. pseudonana in lacking one central strutted process. Copyright © 2004 by Walter de Gruyter GmbH & Co. KG Hydrobiology nationallicence Mycology, fungi nationallicence Botany & plant sciences nationallicence Sunesen Inés aut Sar Eugenia A. aut Botanica Marina Walter de Gruyter 47/3(2004-07-12), 238-247 0006-8055 47:3<238 2004 47 botm https://doi.org/10.1515/BOT.2004.025 text/html Onlinezugriff via DOI 1 research article jats NATIONALLICENCE 856 40 https://doi.org/10.1515/BOT.2004.025 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sunesen Inés aut NATIONALLICENCE 700 1- Sar Eugenia A. aut NATIONALLICENCE 773 0- Botanica Marina Walter de Gruyter 47/3(2004-07-12), 238-247 0006-8055 47:3<238 2004 47 botm CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-gruyter