September 14th 2007

(Number 1)

R.M. Crawford, F. Hinz & C. Honeywill - Three species of the diatom genus Corethron Castracane: structure, distribution and taxonomy (pp. 1-28);  N. Davidovich - Transition to sexual reproduction and control of initial cell size in Nitzschia lanceolata (pp 29-38);  R.J. Flower, S.P. Ozornina, A. Kuzmina & F.E. Round - Pliocaenicus taxa in modern and fossil material mainly from Eastern Russia (pp. 393-62);  H. Håkansson, S. Olsson, H. Jiang & C.-D. Garbe-Schönberg - The sediment diatom association and chemistry of surface sediments of Lake Belauer See, northern Germany (pp. 63-91);  J.R. Johansen & J.C. Sray - Microcostatus gen. nov., a new aerophilic diatom genus based on Navicula krasskei Hustedt (pp. 93-101);  M. Mizuno - Sexual reproduction and auxospore formation of the marine monoraphid diatom Cocconeis pellucida (pp. 103-112);  P.A. Sims & A.D. Mahood - Vulcnella hannae Sims & Mahood, gen. et sp. nov., with a discussion of the genera Tumulopsis Hendey, Acanthodiscus Pantocsek, Poretzkia Jousé and Goniothecium Ehrenberg (pp. 113-131);  S.A. Spaulding & J.P. Kociolek - The diatom genus Orthoseira: ultrastructure and morphological variation in two species from Madagascar with comments on nomenclature in the genus (pp. 133-147);  V. Villeneuve & R. Pienitz - Composition diatomifère de quatre sources thermales a Canada, en islande et au Japon (pp. 149-175);  J.P. Kociolek - Does each genus of diatoms have at least one unique feature? A reply to Round (pp. 177-179);  F.E. Round - Validation of some previously published achnanthoid genera (p. 181);  E.A. Sar, M.E. Ferrario & C. Castaños - Authentication of the type material of Pseudo-nitzschia australis Frenguelli (pp. 183-185);  L.C. Torgan & V. Becker - Eunotia itapuana, nom. nov. (p. 187);  Obituary: Professor H. Kobayasi 1926-1996 (pp. 189-197). 

(Number 2)
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M. Cantonati - Diatom communities of springs in the Southern Alps (pp. 201-220);  C. Honeywill - A study of British Licmophora species and a discussion of its morphological features (pp. 221-271);  D. Lazarus & R. Jahn - Using the Ehrenberg Collection (pp. 273-291);  S.A. McBride & R.K. Edgar - Janus cells unveiled: frustular morphometric variability in Gomphonema angustatum (pp. 293-310);  M.R. McQuoid & L.A. Hobson - Assessment of palaeoenvironmental conditions on Southern Vancouver Island, British Columbia, Canada, using the marine tychoplankter Paralia sulcata (pp. 311-321);  S.E. Sala, E.A. Sar & M.E. Ferrario - Review of materials reported as containing Amphora coffeaeformis (Agardh) Kützing in Argentina (pp. 323-336);  P.A. Sims - The early history of the Biddulphiales. I. The genus Medlinia gen. nov. (pp. 337-374);  Y. Zong & B.J. Horton - Diatom zones across intertidal flats and coastal saltmarshes in Britain (pp. 375-394);  P.W. Basson & P.A. Sims - A tube-dwelling diatom and its co-habitant from South Africa (pp. 395-401).�

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