Silva Center for Phycological Documentation: Index Nominum Algarum

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Indexes (very large files) to all taxa:

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Navicula gemma Ehrenberg
Abh. Königl. Akad. Wiss. Berlin, Physik. Kl. 1839: 156, pl. IV: fig. V. 1840. (L)
Type: BHUPM; specimen of Taxonomic preparations No. 540032-3 (LT fide Jahn & Kusber, 2004)
Type locality: Germany: mouth of Elbe near Cuxhaven

See image Surirella gemma (Ehrenberg) Kützing 1844
See image Novilla gemma (Ehrenberg) Heiberg 1863
See image Suriraya gemma (Ehrenberg) Pfitzer 1871
See Petrodictyon gemma (Ehrenberg) D.G. Mann 1990 (inval.) (T)

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