You have requested access to download the full text of the source (SourceID: 170770):
Lundholm, N.; Hasle, G. R. (2010). Fragilariopsis (Bacillariophyceae) of the Northern Hemisphere - morphology, taxonomy, phylogeny and distribution, with a description of F. pacifica sp. nov. Phycologia. 49(5): 438-460.