Eunotia bilii

Lowe and Kociolek 1984      Category: Eunotioid
BASIONYM: Eunotia bilii Lowe and Kociolek 1984

Eunotia areniverma

 

Eunotia boomsma

LM scalebar = 10 µm = 40 pixels.



Observations

Contributor: Paula Furey - April 2011
Length Range: 29-50 µm
Width Range: 10-13 µm
Striae in 10 µm: 7-10 in the center valve, 10-16 at the ends

Description

Valves are highly arched. The dorsal margin is undulate . The number of dorsal undulations and their depth is variable within the species , but generally ranges from 5 to 8. The ventral margin is straight or slightly concave. The apices are protracted and terminate bluntly, with a slight ventral curvature. Two types of striae are present; full striae are widely spaced and extend from margin to margin, irregular striae are very short and restricted to the dorsal margin near the center valve. Shortened striae are absent from the valve apices. Valves possess one apical rimoportula. Internally, the openings of the areolae are aligned in the bottom of a narrow groove in the inner valve surface (SEM).



Original Description

Basionym: Eunotia bilii
Author: Lowe and Kociolek 1984
Length Range: 32-46 µm
Width Range: 10-13 µm
Striae in 10 µm: 9-10

Original Description

Valves highly arched, dorsal margin undulate, with number and depth of undulations variable. Ventral margin straight or slightly concave. Valve length: 32-46 μm, breadth 10-13 μm. Ends protracted but terminating bluntly, with a slight ventral curvature at the ends. Full striae widely spaced, with irregular shortened striae at the dorsal margin near mid-valve. Shortened striae not present at valve ends. Number of striae 9-10 μm.

Original Images


Cite This Page:
Furey, P. (2011). Eunotia bilii. In Diatoms of the United States. Retrieved August 30, 2014, from http://westerndiatoms.colorado.edu/taxa/species/eunotia_bilii

Species: Eunotia bilii

Contributor: Paula Furey

Reviewer: Sam Rushforth

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.

Lowe, R.L. and Kociolek, J.P. (1984). New and rare diatoms from Great Smoky Mountains National Park. Nova Hedwigia 39(3-4): 465-476.

Links & ID's

Index Nominum Algarum (INA)

Original INA

California Academy of Sciences (CAS)

Eunotia bilii CAS

North American Diatom Ecological Database (NADED)

NADED ID:

Autecology Discussion

Eunotia bilii is found epiphytic on bryophytes, in first through fourth order streams and wet walls, especially throughout the Great Smoky Mountains National Park.

Images

Eunotia bilii has been collected from rivers such as this in the Great Smoky Mountains National Park: Hazel Creek.

Credit/Source: Linda Novitski

Eunotia bilii has been collected from rivers such as this in the Great Smoky Mountains National Park: Otter Creek.

Credit/Source: Paula C. Furey

Eunotia bilii has been collected from wet walls such as this. Chimney Tops Trail, Great Smoky Mountains National Park.

Credit/Source: Paula C. Furey