Pinnularia marchica

Schönfelder in Krammer 2000      Category: Symmetrical biraphid

REPORTED AS: Pinnularia microstauron (Krammer and Lange-Bertalot 1986) 

Pinnularia lata


Pinnularia microstauron

LM scalebar = 10 µm = 80 pixels.


Contributor: Marina Potapova - January 2012
Length Range: 11-20 µm
Width Range: 4-5 µm
Striae in 10 µm: 10-13


Valves are linear to elliptic-lanceolate, with rostrate apices (in most, but not all, specimens). The axial area is lanceolate, widening into a large central area that reaches the valve margins. The raphe is straight, with proximal ends bent slightly to one side. Striae are radiate near the valve center and slightly convergent near the apices.

Original Description

Author: Schönfelder ex Krammer 2000
Length Range: 22-37 µm
Width Range: 4.7-6.3 µm
Striae in 10 µm: 11-14

Original Description

Original Images

Cite This Page:
Potapova, M. (2012). Pinnularia marchica. In Diatoms of the United States. Retrieved April 25, 2018, from

Species: Pinnularia marchica

Contributor: Marina Potapova

Reviewer: Sam Rushforth


Krammer, K. (2000). The genus Pinnularia. The Diatoms of Europe. Diatoms of Inland Waters and Comparable Habitats 1: 1-703.

Links & ID's

Index Nominum Algarum (INA)

Original INA

California Academy of Sciences (CAS)

Pinnularia marchica CAS

North American Diatom Ecological Database (NADED)


Autecology Discussion