Diatoms of North AmericaDiatoms of North America
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Compare Psammothidium levanderi

(Hust.) Bukht. and Round 1996

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Psammothidium levanderi differs from P. lacus-vulcani by the shape of the central area on raphe valve. In P. levanderi the central area is asymmetric, but present on both sides of the raphe. In P. lacus-vulcani, the central area is absent from one side of the raphe.

LM scalebar = 10 µm
Psammothidium levanderi LM7 Psammothidium levanderi LM5 Psammothidium levanderi LM3 Psammothidium levanderi LM4 Psammothidium levanderi LM2 Psammothidium levanderi LM1
Length Range
7-11 µm
Width Range
4.5-5.2 µm
Striae in 10 µm
24-30

Also compare to

Psammothidium lacus-vulcani

(Lange-Bert. and Krammer) Bukht. in Bukht. and Round