Neidium bobmarshallensis

Bahls 2013      Category: Symmetrical biraphid
BASIONYM: Neidium bobmarshallensis Bahls 2013

REPORTED AS: Neidium kozlowi var. elliptica (Foged 1981, p. 135, plate XXVI, fig. 6) | ?Neidium kozlowii (Metzeltin et al. 2009, p. 336, plate 102, figs. 2-7; not plate 103, figs. 7-11) 

Neidiopsis wulffii

 

Neidium fogedii

LM scalebar = 10 µm = 40 pixels.



Observations

Contributor: Loren Bahls - April 2013
Length Range: 60-79 µm
Width Range: 14.8-17.8 µm
Striae in 10 µm: 13-15

Description

Valves are lanceolate with broadly rounded and unprotracted or very weakly protracted apices. A longitudinal line is evident along each margin. The axial area is straight, about three times wider than the raphe, becoming somewhat wider near the central area. The central area is wide, rectangular in shape and crosses the valve diagonally. It is bordered by short faint striae along the valve margins. The raphe is lateral, becoming filiform at the proximal ends, which are hooked sharply in opposite directions. Striae are oriented diagonally across the valve face. Areolae number 20-24 in 10 µm.



Original Description

Basionym: Neidium bobmarshallensis
Author: Bahls 2013
Length Range: 60-79 µm
Width Range: 14.8-17.8 µm
Striae in 10 µm: 13-15

Original Description

Valves lanceolate with broadly rounded, very weakly protracted apices. Valve length 60–79 μm; valve width 14.8–17.8 μm. A longitudinal line evident along each margin. Axial area straight and narrow, flaring a bit near the central area. Central area wide, rectangular, oriented diagonally to the apical axis. Central area bordered by short faint striae along valve margins. Raphe lateral, becoming filiform at the proximal ends, which are hooked sharply in opposite directions. Striae oriented diagonally across the valve face, 13–15 in 10 μm. Areolae 20–24 in 10 μm.

Original Images


Cite This Page:
Bahls, L. (2013). Neidium bobmarshallensis. In Diatoms of the United States. Retrieved July 28, 2014, from http://westerndiatoms.colorado.edu/taxa/species/neidium_bobmarshallensis

Species: Neidium bobmarshallensis

Contributor: Loren Bahls

Reviewer: Sarah Spaulding

Citations

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

Foged, N. (1981). Diatoms in Alaska. Bibliotheca Phycologica, Band 53, J. Cramer, Vaduz, 317 pp.

Hustedt, F. (1930). Bacillariophyta (Diatomeae). In: Die Subwasser Flora Mitteleuropas. (A. Pascher, ed.),10, Gustav Fischer, Jena. 468 pp.

Mereschkowsky, C. 1906. Diatomées du Tibet. Imperial Russkoe geograficheskoe obshchestvo. St. Petersburg 40 pp. (1906). Diatomées du Tibet. Imperial Russkoe geograficheskoe obshchestvo, St. Petersburg. 40 pp.

Metzeltin, D., Lange-Bertalot, H. and Soninkhishig, N. (2009). Diatoms in Mongolia. Iconographia Diatomologica (H. Lange-Bertalot, ed.), Vol. 20, A. R. G. Gantner Verlag K. G., Ruggell, 691 pp.

Links & ID's

Index Nominum Algarum (INA)

Original INA

California Academy of Sciences (CAS)

North American Diatom Ecological Database (NADED)

NADED ID:

Autecology Discussion

Besides three lakes in the Bob Marshall Wilderness of northwestern Montana, Neidium bobmarshallensis has been recorded from Logging Lake in nearby Glacier National Park. On the date the Logging Lake sample was collected, pH measured 7.78 and specific conductance measured 43. This species was also reported (as N. kozlowi var. elliptica) from a small pond in the Brooks Range of Alaska (Foged 1981).

Images

Lake Levale, Bob Marshall Wilderness, Montana: home of Neidium bobmarshallensis.

Credit/Source: Loren Bahls