Diatoms of North AmericaDiatoms of North America
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Compare Pinnularia subgibba var. lanceolata

Gaiser and Johansen 2000

Compare

Pinnularia subgibba has protracted, nearly capitate apices.

Pinnularia hudsonii has a broader axial area and larger valves.

Pinnularia egregia has a broader transverse fascia and wider axial area.

Pinnularia certa has smaller valves and a broader transverse fascia.

LM scalebar = 10 µm
Pinnularia subgibba var. lanceolata LM5 Pinnularia subgibba var. lanceolata LM4 Pinnularia subgibba var. lanceolata LM2 Pinnularia subgibba var. lanceolata LM6 Pinnularia subgibba var. lanceolata LM3 Pinnularia subgibba var. lanceolata LM1
Length Range
57-74 µm
Width Range
8.8-10.2 µm
Striae in 10 µm
9-10

Also compare to

Pinnularia subgibba

Krammer

BioData Reference
Krammer 2000 Pl 64 Fig 1-3 9

Pinnularia certa

Krammer and Metzeltin in Metzeltin and Lange-Bert. 1998

Pinnularia egregia

Metzeltin and Krammer in Metzeltin and Lange-Bert. 1998

Pinnularia hudsonii

Metzeltin, Lange-Bert. and García-Rodríguez 2005