Genus: Unicells or a colony of spherical cells covered with a distinct sheath.
Species: Colonies consisting of many cells lacking definite layers; colonies formed by small subsets of 2, 4 or 8 cells; cell body (excluding sheath) larger than 5 μm in diameter (6 - 11 μm) (Illustrations of The Japanese Fresh-water Algae, 1977).

Google Image Search

Colonies consisting of many cells
C. pallidus 11 x 8 μm Numappara marsh Kuroiso Tochigi, 2003	C. pallidus ? or C. helveticus ? 10 x 10 μm Ushidome-ike Norikura highland Nagano, 2005	C. pallidus ? or C. helveticus ? 10 x 8 μm Ushidome-ike Norikura highland Nagano, 2006	C. pallidus ? or C. helveticus ? 10 x 8 μm Mida-ga-hara Gassan (mt.) Yamagata, 2005
C. pallidus 10 x 11 μm Iroha-numa Azuma mt. Yamagata, 2007	C. pallidus 11 x 10 μm Kenashitai Hakkoda mountain Aomori, 2005	C. pallidus 11 x 9 μm Oze s.k.m. Ozegahara Gunma, 2006	C. pallidus x 7 μm Sensho-ga-hara Komagadake Iwate, 2007
C. pallidus ? 7 x 3 μm Ukishima marsh Tsugaike highland Nagano, 2005	C. pallidus ? 7 x 6 μm Tanohara marsh Shiga highland Nagano, 2004	C. pallidus 7 μm Kisuge konuma Shimogo Fukushima, 2005
C. pallidus 8 μm J. Skunk Cabbage m. Tsugaike highland Nagano, 2005	C. pallidus ? or Microcystis ? 11 x 10 μm Kodanuki marsh Fujinomiya Shizuoka, 2005	C. pallidus ? or Microcystis ? 10 μm Fujimi-hotaru-shinsui Okegawa Saitama, 2006	C. pallidus ? 7 μm Omine-numa Tsukiyono Gunma, 2003

Copyright Protist Information Server