Eunotia montuosa

Furey, Lowe and Johansen 2011      Category: Eunotioid
BASIONYM: Eunotia montuosa Furey, Lowe and Johansen 2011

Eunotia microcephala

 

Eunotia mydohaimasiae

LM scalebar = 10 µm = 40 pixels.



Observations

Contributor: Paula Furey - February 2011
Length Range: 31-59 µm
Width Range: 7-13 µm
Striae in 10 µm: 7-9 in the center valve, 10-14 at the ends

Description

The ventral margin is slightly concave with subapical swellings at the proximal raphe ends. The dorsal margin is strongly biundulate with acutely pointed peaks. The valve apices are constricted, dorsally recurved and apically flattened. Helictoglossae are not visible in the LM. One apical rimoportula is positioned at the center of the apex (visible in SEM). The distal ends of the raphe are slightly curved and clearly visible in the LM. Striae are radiate. Short, radiate striae are present distally to the distal raphe ends. Aerolae within a stria number 24-28 in 10 µm.



Original Description

Basionym: Eunotia montuosa
Author: Furey, Lowe and Johansen 2011
Length Range: 31-59 µm
Width Range: 7-13 µm
Striae in 10 µm: 7-9 in the center valve, 10-14 at the ends, puncta 24-28

Original Description

Valves slightly concave with subapical swellings on the ventral margin, strongly biundulate with acutely pointed peaks on the dorsal margin, 31 – 59 μm long, 7 – 13 μm wide. Ends attenuated, constricted, dorsally recurved, truncated and apically flattened. Helictoglossae not visible in the light microscope. Rimoportula at one end of valve, at the center of the apex. Raphe with distal ends slightly curved and clearly visible in the light microscope. Striae radiate, with abbreviated radial striae at the apices after the last transverse stria, 7 – 9 in 10 μm in the valve center, 10 – 14 in 10 μm near the valve apices. Puncta 24-28 in 10 μm.

Original Images


Cite This Page:
Furey, P. (2011). Eunotia montuosa. In Diatoms of the United States. Retrieved November 22, 2014, from http://westerndiatoms.colorado.edu/taxa/species/eunotia_montuosa

Species: Eunotia montuosa

Contributor: Paula Furey

Reviewer: Marina Potapova

Citations

Furey, P.C., Lowe, R.L. and Johansen, J.R. (2011). Eunotia Ehrenberg (Bacillariophyta) of the Great Smoky Mountains National Park, USA. Bibliotheca Diatomologica 56: 1-134.

Links & ID's

Index Nominum Algarum (INA)

California Academy of Sciences (CAS)

North American Diatom Ecological Database (NADED)

NADED ID:

Autecology Discussion

To date, Eunotia montuosa has been found in low abundance in epilithic samples from Hen Wallow Falls and in brown slime on a wet wall at the edge of Meigs Falls in the Great Smoky Mountains National Park.