Diatoms of North AmericaDiatoms of North America
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Compare Psammothidium obliquum

(W.Greg.) M.Potapova 2018

Compare

Psammothidium harvey is smaller in size, has subrostrate apices and the raphe is aligned with the apical valve axis.

LM scalebar = 10 µm
Psammothidium obliquum LM1 Psammothidium obliquum LM2 Psammothidium obliquum LM3 Psammothidium obliquum LM4 Psammothidium obliquum LM5 Psammothidium obliquum LM6 Psammothidium obliquum LM7
Length Range
25-53 µm
Width Range
12-14.5 µm
Striae in 10 µm
19-22 in 10 μm on raphe valve, 16-20 on rapheless valve

Psammothidium harveyi

(Reimer) Potapova 2012

Psammothidium harveyi LM4 Psammothidium harveyi LM1 Psammothidium harveyi LM2 Psammothidium harveyi LM3 Psammothidium harveyi LM5 Gc44254 Acharvey 1B Gc44254 Acharvey 1C
Length Range
10-29 µm
Width Range
7.0-9.5 µm
Striae in 10 µm
22-25