Psammothidium lacustre

Enache and Potapova 2013      Category: Monoraphid

Psammothidium helveticum

 

Psammothidium lauenburgianum

LM scalebar = 10 µm = 80 pixels.



Observations

Contributor: Marina Potapova - March 2014
Length Range: 17-28 µm
Width Range: 8.4-11.2 µm
Striae in 10 µm: 22–26

Description

Valves are lanceolate. The raphe valve has a linear axial area and a rectangular central area, occupying ½ to 2/3 of the valve breadth. The proximal raphe ends are slightly deflected internally. The terminal raphe fissures are long and deflected in opposite directions. The rapheless valve has a narrow axial area and round central area occupying 2/3 of the valve breadth. Striae are radiate. Areolae are 40–60 in 10 μm, with external round foramina, and internal expressions elongated transapically.



Original Description

Basionym:
Author: Enache and Potapova 2013
Length Range: 16.7-28 µm
Width Range: 8.4-11.2 µm
Striae in 10 µm: 22-26

Original Description

Original Images


Cite This Page:
Potapova, M. (2014). Psammothidium lacustre. In Diatoms of the United States. Retrieved December 10, 2017, from http://westerndiatoms.colorado.edu/taxa/species/psammothidium_lacustre

Species: Psammothidium lacustre

Contributor: Marina Potapova

Reviewer: Sarah Spaulding

Citations

Enache, M.D., Potapova, M. Sheibley, R. and Moran, P. (2013). Three new Psammothidium species from lakes of Olympic and Cascade Mountains in Washington State, USA. Phytotaxa 127: 49-57. 10.11646/phytotaxa.127.1.8

Sheibley, R.W., Enache, M., Swarzenski, P.W., Moran, P.W. and Foreman, J.R. (2014). Nitrogen deposition effects on diatom communities in lakes from three national parks in Washington state. Water, Air, and Soil Pollution 225: 1857. 10.1007/s11270-013-1857-x

Links & ID's

Index Nominum Algarum (INA)

California Academy of Sciences (CAS)

North American Diatom Ecological Database (NADED)

NADED ID:

Autecology Discussion

So far, Psammothidium lacustre has been found only in oligotrophic lakes of the Washington Cascade mountain range.