Species: Cell body 58-(64.5-95)-100 μm long, (42-56)-62 μm wide, isthmus (14-19)-20 μm wide, L/W=1.5; semicells pyramidal in shape, with flattened apex, basal corner rounded, side and apical view elliptical; cell wall dotted (Illustrations of The Japanese Fresh-water Algae, 1977).

Google Image Search

Apex flatted, semicell scalariform
C. pyramidatum 82 x 47 μm Sukawa highland Kurikoma mountain Akita, 2005	C. pyramidatum 84 x 48 μm 83 x 46 μm 77 x 42 μm Omine-numa Tsukiyono Gunma, 2003	C. pyramidatum ? 88 x 51 μm Omine-numa 6 Minakami Gunma, 2007	C. pyramidatum 83 x 46 μm Numappara marsh Kuroiso Tochigi, 2003
C. pyramidatum 82 x 47 μm riverside park Kuroiso Tochigi, 2005	C. pyramidatum 88 x 51 μm Ohnuma Nasu-shiobara Tochigi, 2007	C. pyramidatum 83 x 47 μm near Ichinose-enchi Norikura highland Nagano, 2006	C. pyramidatum ? 83 x 47 μm Uruguay, 1999

Similar species -- >> C. pseudopyramidatum (42-61 μm); C. javanicum (112-118 μm);

Please click on species name for more images.

Copyright Protist Information Server