Navicula piercei

Bahls 2012      Category: Symmetrical biraphid
BASIONYM: Navicula piercei Bahls 2012

Navicula perotii

 

Navicula pseudolanceolata

LM scalebar = 10 µm = 40 pixels.



Observations

Contributor: Loren Bahls - March 2012
Length Range: 64-76 µm
Width Range: 6.8-8.0 µm
Striae in 10 µm: 11-13

Description

Valves are linear and subtly triundulate with a distinctly tumid middle and broadly rounded, somewhat wedge-shaped apices. Raphe branches are weakly lateral. Proximal raphe ends are straight or deflected slightly to the secondary side. Distal raphe fissures are hooked to the secondary side. The axial area is very narrow and linear. The central area is elliptical and asymmetric, bordered by 2-5 irregularly shortened and often faint striae. Striae are radiate, becoming convergent at the ends. Areolae in the striae number about 30 in 10 μm and are usually visible in LM.



Original Description

Basionym: Navicula piercei
Author: Bahls 2012
Length Range: 64-76 µm
Width Range: 6.8-8.0 µm
Striae in 10 µm: 11-13

Original Description

Valves linear and subtly triundulate with a distinctly tumid middle and broadly rounded ends, 64 –76 μm long, 6.8 – 8.0 μm wide. Raphe weakly lateral, proximal raphe endings straight or deflected slightly to the secondary side, distal fissures hooked to the secondary side. Axial area very narrow, linear. Central area elliptical and asymmetric, bordered by irregularly shortened and often faint striae. Striae radiate, becoming convergent at the ends, 11–13 in 10 μm, lineolae about 30 in 10 μm, visible in LM. For measurements, n = 23 valves.

Original Images


Cite This Page:
Bahls, L. (2012). Navicula piercei. In Diatoms of the United States. Retrieved August 23, 2014, from http://westerndiatoms.colorado.edu/taxa/species/navicula_piercei

Species: Navicula piercei

Contributor: Loren Bahls

Reviewer: Mark Edlund

Citations

Bahls, L.L. (2012). Seven new species in Navicula sensu stricto from the Northern Great Plains and Northern Rocky Mountains. Nova Hedwigia, Beiheft 141: 19–38.

Links & ID's

Index Nominum Algarum (INA)

California Academy of Sciences (CAS)

North American Diatom Ecological Database (NADED)

NADED ID:

Autecology Discussion

Navicula piercei is known only from Copper Lake in Shoshone County, northern Idaho. Here, on the date the holotype sample was collected, pH was 7.5 and specific conductance was 40 μS/cm.