Silva Center for Phycological Documentation: Index Nominum Algarum

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Indexes (very large files) to all taxa:

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Bacillaria sigmoidea Nitzsch
Neue Schr. Naturf. Ges. Halle 3: 104, pl. VI: figs. 4-6. 1816. (L)
Type locality: Germany: Wittenberg

See Cymbella sigmoidea (Nitzsch) C. Agardh 1830
See image Navicula sigmoidea (Nitzsch) Ehrenberg 1831
See Sigmatella nitzschii Kützing 1833 (illeg.)
See image Synedra sigmoidea (Nitzsch) Kützing 1844
See Frustulia sigmoidea (Nitzsch) Jenner 1845
See Nitzschia elongata Hassall 1845 (illeg.)
See Nitzschia sigmoidea (Nitzsch) W. Smith 1853 (T)
See Homoeocladia sigmoidea (Nitzsch) Elmore 1921
["Wittenberger Stadtgraben"]

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