Silva Center for Phycological Documentation: Index Nominum Algarum

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Indexes (very large files) to all taxa:

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Fragilaria virescens var. exigua Grunow in Van Heurck
Syn. Diatom. Belgique: pl. XLIV: figs. 2, 3. 1881. (F: striation only)
Type locality: locality not given

See Fragilariforma virescens var. exigua (Grunow) M. Poulin 1992
See Fragilaria exiguiformis Lange-Bertalot 1993
[as F. virescens var. ? exigua]

Retrieve all Fragilaria
Get original family assignment from Index Nominum Genericorum
Check for UC specimen record
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