Stauroneis kootenai

Bahls 2010      Category: Symmetrical biraphid
BASIONYM: Stauroneis kootenai Bahls 2010

Stauroneis kishinena

 

Stauroneis kriegeri

LM scalebar = 10 µm = 80 pixels.



Observations

Contributor: Loren Bahls - December 2011
Length Range: 34-52 µm
Width Range: 8.1-10.3 µm
Striae in 10 µm: 20-28

Description

Valves are lanceolate with capitate apices. Raphe is slightly lateral, becoming filiform at the distal and proximal ends. Proximal raphe ends are straight and not inflated. The axial area is narrow and linear, barely wider than the raphe, flaring slightly into the central area. The central area is a narrow stauros. Striae are radiate throughout. Areolae are fine, round to oblong, irregularly spaced, and number 20-26 in 10 µm.



Original Description

Basionym: Stauroneis kootenai
Author: Bahls 2010
Length Range: 34-52 µm
Width Range: 8.1-10.3 µm
Striae in 10 µm: 20-28

Original Description

Valves lanceolate with capitate to subcapitate ends. Length 34-52 µm, width 8.1-10.3 µm. Raphe slightly lateral, becoming filiform at the distal and proximal endings. Proximal raphe ends small and straight, not inflated or deflected. Axial area narrow and linear, barely wider than the raphe, flaring slightly at the central area. Central area a narrow rectangular fascia. Striae radiate throughout, 20-28 in 10 µm. Striae puncta fine, round to oblong, and irregularly spaced, 20-26 in 10 µm. For measurements, n = 24 valves.

Original Images


Cite This Page:
Bahls, L. (2011). Stauroneis kootenai. In Diatoms of the United States. Retrieved October 22, 2014, from http://westerndiatoms.colorado.edu/taxa/species/stauroneis_kootenai

Species: Stauroneis kootenai

Contributor: Loren Bahls

Reviewer: Marina Potapova

Citations

Bahls, L. (2010). Stauroneis in the Northern Rockies: 50 species of Stauroneis sensu stricto from western Montana, northern Idaho, northeastern Washington and southwestern Alberta, including 16 species described as new. Northwest Diatoms, Volume 4. The Montana Diatom Collection, Helena, 172 pp.

Links & ID's

Index Nominum Algarum (INA)

Original INA

California Academy of Sciences (CAS)

Stauroneis kootenai CAS

North American Diatom Ecological Database (NADED)

NADED ID:

Autecology Discussion

Stauroneis kootenai has been found in several lakes, ponds, fens, and low-gradient streams in western Montana. The pH of these waters ranges from 6.7 to 7.8 and specific conductance ranges from 22 to 169 µS/cm.

Images

Spring pool on Kintla Lake Trail, Glacier National Park, Montana: type locality of Stauroneis kootenai.

Credit/Source: Mike Pasichnyk