Diatoms of North AmericaDiatoms of North America
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Compare Planothidium joursacense

(Hérib.) Lange-Bert. 1999

Compare

Planothidium frequentissimum has a narrower, more linear valve and narrow axial area on the rapheless valve.

LM scalebar = 10 µm
Gc8526 Acomissa Circle4 Cl Gc8526 Acomissa Circle1B Cl Planothidium joursacense LM4 Planothidium joursacense LM2 Planothidium joursacense LM1 Planothidium joursacense LM5 Planothidium joursacense LM3
Length Range
9.6-15.6 µm
Width Range
5.5-7.3 µm
Striae in 10 µm
17-19

Planothidium frequentissimum

(Lange-Bert. in Krammer and Lange-Bert.) Lange-Bert. 1999

Gs119780 1 Ed Planothidium frequentissimum LM3 Planothidium frequentissimum LM2 Mo000019 1A Ed 5 Planothidium frequentissimum LM1 Gs181995 1B Ed Mo000019 Plfreq 1B Ed
Length Range
5-17 µm
Width Range
3-6 µm
Striae in 10 µm
13-18