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Nitzschia sigma var. rigidula Grunow in Van Heurck
Syn. Diat. Belg.: pl. LXVI: fig. 8. 1881. (F)
Type locality: locality not cited
Retrieve all Nitzschia
Get original family assignment from Index Nominum Genericorum
Check for UC specimen record
Problems/comments to rlmoe@berkeley.edu
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University Herbarium, University of California, Berkeley