- Gomphonema olivaceum var. thumii ('thumi') Fricke
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A. Schmidt's Atlas: pl. 266: figs. 26-28.
1906.
(nomen)
Type locality: Germany: Leipzig
See Gomphonema thumii (Fricke) H. Lange-Bertalot 2005
Retrieve all Gomphonema
Get original family assignment from Index Nominum Genericorum
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