Eunotia canicula

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

Eunotia boomsma

 

Eunotia cataractarum

LM scalebar = 10 µm = 80 pixels.



Observations

Contributor: Paula Furey - March 2011
Length Range: 20-35 µm
Width Range: 3.5-4.0 µm
Striae in 10 µm: 14-15, areolae >35

Description

Valves are straight to weakly concave on the ventral margin. The valve mantle is thickened at the proximal raphe ends. The dorsal margin is convex. The apices are acutely rounded, tapered, subrostrate, slightly delimited by a change in the slope of the dorsal margin, and appear nose-like. Each helictoglossa is equidistant from the midpoint of the apical axis and the apex. The helictoglossae are “set in” forming an indentation on the ventral margin. The distal raphe ends curve onto the valve surface. Striae are slightly radiate.



Original Description

Basionym: Eunotia canicula
Author: Furey, Lowe and Johansen 2011
Length Range: 20-35 µm
Width Range: 3.5-4.0 µm
Striae in 10 µm: 14-15, puncta >35

Original Description

Valves straight to weakly concave on the ventral margin, with valve mantle thickened at the proximal raphe ends, convex on the dorsal margin, 20 – 35 μm long, 3.5 – 4.0 μm wide. Apices acutely rounded, tapered, subrostrate, slightly delimited by a change in the slope of the dorsal margin, appearing nose-like. Helictoglossae set in from ends, equidistant from each end, giving appearance of an indentation in the light microscope. Rimoportula at one end, at the center of the apex. Raphe with distal ends curved onto the valve surface. Striae slightly radiate, 14 – 15 in 10 μm. Puncta >35 in 10 μm.

Original Images


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

Species: Eunotia canicula

Contributor: Paula Furey

Reviewer: Rex Lowe

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 canicula has been found epiphytic on bryophyte substrates in streams throughout the Great Smoky Mountains National Park.

Images

Type locality: Noland Creek in the Noland Creek watershed. Great Smoky Mountains National Park, Swain County, North Carolina

Credit/Source: Paula C. Furey