Diatoms of North AmericaDiatoms of North America
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Compare Psammothidium subatomoides

(Hust.) Bukht. and Round 1996

Compare

Psammothidium daonense has larger valves and rhomboidal axial area on the rapheless valve. The valves of P. chlidanos are wider and more elongated. Psammothidium lacus-vulcani has an asymmetrical central area on the raphe valve and lacks a central area on the rapheless valve.

LM scalebar = 10 µm
Psammothidium subatomoides LM10 Psammothidium subatomoides LM2 Psammothidium subatomoides LM4 Psammothidium subatomoides LM6 Psammothidium subatomoides LM8
Length Range
5.5–11 µm
Width Range
3.2-6.0 µm
Striae in 10 µm
30-40

Psammothidium daonense

(Lange-Bert.) Lange-Bert. 1999

Psammothidium daonense LM3 Psammothidium daonense LM2 Psammothidium daonense LM1 Gs100739 Psdao 4A Ed Gs100739 Psdao 4B Ed Mo000019 1A Ed Gs007601 Psdao 1A Ed
Length Range
9-23 µm
Width Range
4.8-7.5 µm
Striae in 10 µm
24-30

Psammothidium chlidanos

(M.H.Hohn and Hellerman) Lange-Bert. 1999

Psammothidium chlidanos LM3 Psammothidium chlidanos LM1 Gsn23387 Pschlidanos 2A Ed Gsn23387 Pschlidanos 2B Ed Gc44453 Acchlidanos Type3 Ed 1 Gc44453 Acchlidanos Type6 Ed Gs100739 Pschlidanos 1A Ed
Length Range
12-18 µm
Width Range
4.8-6.2 µm
Striae in 10 µm
27-33

Also compare to

Psammothidium lacus-vulcani

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