Silva Center for Phycological Documentation: Index Nominum Algarum

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Sphaerozosma excavatum f. granulatum ('granulata') Rabenhorst
Fl. Eur. Alg. III: 149. 1868. (nomen)
Type locality: Europe
["b. Forma granulata. (Rabenh. Alg. sub No. 1338)". 1338 in Algen Europa's is Cosmarium depressum and [b.] Staurastrum quadrangulare ... "und einige andere Desmidieen". There is nothing in the description (by Hantzsch) that can be tied to this name.]

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