166,677 species and infraspecific names are in the database, 22,910 images, 64,473 bibliographic items, 504,407 distributional records.

Species References

Fragilaria virescens f. exigua (Grunow) Skabichevskij

References
(Please note: only references with the binomials in the title are included. The information is from the Literature database.)

Flower, R.J., Jones, V.J. & Round, F.E. (1996). The distribution and classification of the problematic Fragilaria (virescens v.) exigua Grunow/ Fragilaria exiguiformis (Grunow) Lange-Bertalot: a new species or a new genus. Diatom Research 11(1): 41-57.

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