Cymbopleura edlundii

Bahls 2013      Category: Asymmetrical biraphid
BASIONYM: Cymbopleura edlundii Bahls 2013

Cymbopleura crassipunctata

 

Cymbopleura heinii

LM scalebar = 10 µm = 40 pixels.



Observations

Contributor: Loren Bahls - September 2012
Length Range: 51-87 µm
Width Range: 14.3-17.9 µm
Striae in 10 µm: 9-13 at the valve center, 14-16 near the apices

Description

Valves are lanceolate with rounded subrostrate apices. Valves are distinctly dorsiventral in small specimens, slightly dorsiventral in larger specimens. Axial and central areas are very wide, 1/3 to 1/2 the valve width, together forming a lanceolate space with a tumid center somewhat offset to the ventral side of the valve. The raphe is distinctly lateral, becoming weakly reverse-lateral near the proximal and distal ends. Proximal raphe ends are offset to the ventral side and tipped with distinctly expanded central pores. Distal fissures are hooked towards the dorsal side. Striae are radiate throughout and more dense near the apices and on the ventral side. Areolae number 25-30 in 10 µm.



Original Description

Basionym: Cymbopleura edlundii
Author: Bahls 2013
Length Range: 51-87 µm
Width Range: 14.3-17.9 µm
Striae in 10 µm: 9-13 at valve center, 14-16 near the apices

Original Description

Valves lanceolate with rounded subrostrate apices, distinctly dorsiventral in small specimens, slightly dorsiventral in larger specimens. Valve length 51–87 μm; valve width 14.3–17.9 μm. Axial and central areas very wide, 1/3 to 1/2 valve width, together forming a lanceolate space with a tumid center somewhat offset towards the ventral margin. Raphe distinctly lateral, becoming weakly reverse-lateral near proximal and distal ends. Proximal raphe ends offset to the ventral side, tipped with distinctly expanded pores. Distal raphe ends hooked towards the dorsal side. Striae radiate throughout, 9–13 in 10 μm at valve center, 14–16 in 10 μm near the apices. Areolae 25–30 in 10 μm.

Original Images


Cite This Page:
Bahls, L. (2012). Cymbopleura edlundii. In Diatoms of the United States. Retrieved July 23, 2014, from http://westerndiatoms.colorado.edu/taxa/species/cymbopleura_edlundii

Species: Cymbopleura edlundii

Contributor: Loren Bahls

Reviewer: Sarah Spaulding

Citations

Bahls, L. (2013). New diatoms (Bacillariophyta) from western North America. Phytotaxa 82(1): 7-28.

Krammer, K. (2003). Cymbopleura, Delicata, Navicymbula, Gomphocymbellopsis, Afrocymbella. Diatoms of Europe. Diatoms of the European Inland Waters and Comparable Habitats 4: 1-530.

Patrick, R.M. and Freese, L.R. (1961). Diatoms (Bacillariophyceae) from Northern Alaska. Proceedings of the Academy of Natural Sciences of Philadelphia 112(6):129-293.

Links & ID's

Index Nominum Algarum (INA)

Original INA

California Academy of Sciences (CAS)

North American Diatom Ecological Database (NADED)

NADED ID:

Autecology Discussion

Cymbopleura edlundii is known only from the type locality, a small pond in Glacier National Park, Montana, near the Canadian border. Water quality data for this pond are not available.

Images

Starvation Ridge Pond, Glacier National Park, Montana: type locality of Cymbopleura edlundii.

Credit/Source: E. William Schweiger, National Park Service