Psammothidium levanderi

(Hustedt) Bukhtiyarova and Round 1996      Category: Monoraphid
BASIONYM: Achnanthes levanderi Hustedt 1933

Psammothidium lauenburgianum

 

Psammothidium marginulatum

LM scalebar = 10 µm = 80 pixels.



Observations

Contributor: Marina Potapova - August 2010
Length Range: 7-11 µm
Width Range: 4.5-5.2 µm
Striae in 10 µm: 24-30

Description

Valves are elliptical to linear-elliptical. The raphe valve has a linear axial area and a small asymmetric central area. The raphe is straight, without terminal fissures. The central raphe ends curve toward opposite sides internally. The rapheless valve has a rhomboid axial area, which often has an irregular border. The central area on rapheless valve is usually not differentiated from the axial area. Striae are slightly radiate in the center and strongly radiate at the apices of both valves, 24-30 in 10 µm. One row of areolae is present on the mantle of both valves. Areolae are often visible in LM.



Original Description

Basionym: Achnanthes levanderi
Author: Hustedt 1933
Length Range: 6-9 µm
Width Range: 4-5 µm
Striae in 10 µm: 21-23

Original Description

Schalen elliptisch mit breit gerundeten Enden, 6-9 μ lang, 4-5 μ breit. Raphenlose Schalen mit breit lanzettlicher bis elliptischer Axialarea, Transapicalstreifen kurz, radial, 21-23 in 10 μ. Raphenschale mit feiner, fadenförmiger Raphe, Axialarea sehr eng, Zentralarea klein, rundlich bos etwas quer verbreiert, Transapikalstreifen 22-28 in 10 μ, von der Mitte gegen die Enden allmählich enger werdend, leicht radial, sehr zart punktiert.

Original Images


Cite This Page:
Potapova, M. (2010). Psammothidium levanderi. In Diatoms of the United States. Retrieved November 24, 2014, from http://westerndiatoms.colorado.edu/taxa/species/psammothidium_levanderi

Species: Psammothidium levanderi

Contributor: Marina Potapova

Reviewer: Sarah Spaulding

Citations

Bukhtiyarova, L. and Round, F. E. (1996). Revision of the genus Achnanthes sensu lato. Psammothidium, a new genus based on Achnanthidium marginulatum. Diatom Research 11: 1-30.

Hustedt, F. (1933). Die Kieselalgen Deutschlands, Österreichs und der Schweiz unter Berücksichtigung der übrigen Länder Europas sowie der angrenzenden Meeresgebiete. In: L. Rabenhorst (ed.), Kryptogamen Flora von Deutschland, Österreich und der Schweiz. Akademische Verlagsgesellschaft m.b.h. Leipzig, Vol. 7, Part 2, pp. 321-432.

Links & ID's

Index Nominum Algarum (INA)

Transfer INA

California Academy of Sciences (CAS)

Psammothidium levanderi CAS

North American Diatom Ecological Database (NADED)

NADED ID: 186015

Autecology Discussion