Silva Center for Phycological Documentation: Index Nominum Algarum

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Indexes (very large files) to all taxa:

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Cosmarium logiense f. expansum ('expansa') W. West & G.S. West
new name
Monogr. Brit. Desmid. IV: 16, pl. XC: fig. 7. 1912.
See Cosmarium latum var. minus Roy & Bisset 1894
["Its dimensions and its granulation are those of Cosmarium Logiense Bissett [vide Vol. III, PL. LXXX, figs. 1 and 2], with which species it should more rightly be placed. It might be called C. Logiense Biss. forma expansa nob."]

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