Stauroneis vandevijveri

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

REPORTED AS: Stauroneis “arctic-anceps” manuscript name (Van de Vijver et al. 2004, Pl. 39, Figs 1-10) 

Stauroneis thompsonii

 

Staurophora brantii

LM scalebar = 10 µm = 40 pixels.



Observations

Contributor: Loren Bahls - December 2011
Length Range: 48-73 µm
Width Range: 9.5-12.5 µm
Striae in 10 µm: 19-23

Description

Valves are lanceolate with rostrate to subcapitate apices. The axial area is narrow and linear, not widening towards the central area. The stauros is broad, expanded toward the valve margins like a bow tie. External raphe fissures are weakly lateral. Proximal raphe ends are straight and not expanded. Striae are radiate throughout and curved near the central area. Areolae are very fine and number 24-28 in 10 µm.



Original Description

Basionym: Stauroneis vandevijveri
Author: Bahls 2010
Length Range: 48-73 µm
Width Range: 9.5-12.5 µm
Striae in 10 µm: 19-23

Original Description

Valves lanceolate with rostrate to subcapitate ends. Length 48-73 µm, width 9.5-12.5 µm. Axial area narrow, linear, not widening towards the central area. Central area a broad fascia, expanded toward the valve margins. Raphe weakly lateral, proximal endings practically straight, central pores not inflated. Striae curved, radiate throughout, 19-23 in 10 µm. Striae puncta very fine, 24-28 in 10 µm. For measurements, n = 25 valves.

Original Images


Cite This Page:
Bahls, L. (2011). Stauroneis vandevijveri. In Diatoms of the United States. Retrieved November 26, 2014, from http://westerndiatoms.colorado.edu/taxa/species/stauroneis_vandevijveri

Species: Stauroneis vandevijveri

Contributor: Loren Bahls

Reviewer: Sarah Spaulding

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.

Van de Vijver, B., Beyens, L. and Lange-Bertalot, H. (2004). The genus Stauroneis in Arctic and Antarctic Regions. Bibliotheca Diatomologica 50, 312 pp.

Links & ID's

Index Nominum Algarum (INA)

Original INA

California Academy of Sciences (CAS)

Stauroneis vandevijveri CAS

North American Diatom Ecological Database (NADED)

NADED ID:

Autecology Discussion

Stauroneis vandevijveri has been recorded from two ponds in southwestern Montana, where pH measured 6.5 and 7.8 and specific conductance measured 25 and 27 µS/cm. This taxon was reported as Stauroneis arctic-anceps (invalid manuscript name) from a shallow ditch in the Russian Arctic (Van de Vijver et al. 2004).

Images

Bloody Dick Pond #1, Beaverhead County, Montana: type locality for Stauroneis vandevijveri.

Credit/Source: Loren Bahls