Silva Center for Phycological Documentation: Index Nominum Algarum

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Indexes (very large files) to all taxa:

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Pleurosigma rigidum W. Smith
Syn. Brit. Diat. 1: 64, pl. XX: fig. 198. 1853. (E)
Type locality: England: East Suffolk: Ipswich
Collector: T. Hodgson (viii.1851)

See Gyrosigma rigidum (W. Smith) Griffith & Henfrey 1856
See image Scalprum rigidum (W. Smith) Kuntze 1891

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