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Achnanthidiaceae
7
Eucocconeis
Achnanthales
5
Bacillariophyceae
5
Chromista
5
Eucocconeis flexella
5
Ochrophyta
5
diatoms
5
Achnanthidium
4
Canada
4
North America
4
Rocky Mountains
4
biogeography
4
ecology
4
floristics
4
taiga
4
tundra
4
Achnanthidium minutissimum
3
Cocconeidaceae
3
Cocconeis
3
Psammothidium
3
Cocconeis placentula
2
Coscinodiscaceae
2
Coscinodiscales
2
Eucocconeis depressa
2
Fragilariaceae
2
Fragilariales
2
Lindavia
2
Naviculaceae
2
Naviculales
2
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