Diatoms of North AmericaDiatoms of North America
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Compare Planothidium delicatulum

(Kütz.) Round and Bukht. 1996

Compare

The raphe valves may be mistaken for those of P. apiculatum. The rapheless valves of P. apiculatum, however, possess a cavum – a feature not found in P. delicatulum.

LM scalebar = 10 µm
Gs181995 2A Gc112144B Nrsa0167 Pldelic1 Gs134565 1A Gs134565 3 1 Gs134565 6 Gc8031 Sabine Pldel1B
Length Range
12-20 µm
Width Range
4.7-7.5 µm
Striae in 10 µm
13-15

Planothidium apiculatum

(R.M.Patrick) Lange-Bert. 1999

Planothidium apiculatum LM3 Planothidium apiculatum LM1 Planothidium apiculatum LM4 Planothidium apiculatum LM6 Planothidium apiculatum LM2 Planothidium apiculatum LM5 Planothidium apiculatum LM7
Length Range
25-31 µm
Width Range
9.0-12.7 µm
Striae in 10 µm
10-12