Cosmioneis reimeri

Lowe and Sherwood 2010      Category: Symmetrical biraphid
BASIONYM: Cosmioneis reimeri Lowe and Sherwood 2010

Cosmioneis hawaiiensis

 

Craticula acidoclinata

LM scalebar = 10 µm = 40 pixels.



Observations

Contributor: Rex Lowe - December 2011
Length Range: 31-61.5 µm
Width Range: 11-18 µm
Striae in 10 µm: 13-14 in the center, 19 near the ends

Description

Valves are lanceolate with slightly rounded, protracted ends. Internally, a narrow pseudoseptum is present. The axial area is narrow, with a slightly wider central area. The proximal raphe ends are slightly expanded. The distal raphe ends are curved in the same direction. Internally, the raphe ends are anchor-shaped. Striae are punctate and radiate, curving from the margin toward the center of the valve. Striae are 13-14 in 10 μm in the center of the valve, becoming finer at the ends (19 in 10 µm). Areolae are round and number 18 in 10 µm.



Original Description

Basionym: Cosmioneis reimeri
Author: Lowe and Sherwood 2010
Length Range: 31-61.5 µm
Width Range: 11-18 µm
Striae in 10 µm: 13-14 in the center, 19 near the ends

Original Description

Valves lanceolate with rounded slightly protracted ends that have a narrow pseudoseptum internally. 31-61.5 μm long, 11-18 μm wide. Raphe occupies a narrow axial area, with a slightly wider central area. Proximal raphe ends slightly expanded on the valve surface in pyriform depression, Distal raphe ends are curved in in the same direction. Internally, raphe ends are anchor-shaped. Striae punctate, and radiate, curving from the margin toward the center of the valve. Striae 13-14 in 10 μm in the center becoming finer at the ends (19/10 µm). Punctae round, 18/10 µm.

Original Images


Cite This Page:
Lowe, R. (2011). Cosmioneis reimeri. In Diatoms of the United States. Retrieved September 18, 2014, from http://westerndiatoms.colorado.edu/taxa/species/cosmioneis_reimeri

Species: Cosmioneis reimeri

Contributor: Rex Lowe

Reviewer: Sarah Spaulding

Citations

Lowe, R.L. and Sherwood, A.R. (2010). Three new species of Cosmioneis (Bacillariophyceae) from Hawai’i. Proceedings of the Academy of Natural Sciences of Philadelphia 160(1):21-28. 10.1635/053.160.0104

Links & ID's

Index Nominum Algarum (INA)

California Academy of Sciences (CAS)

Cosmioneis reimeri CAS

North American Diatom Ecological Database (NADED)

NADED ID:

Autecology Discussion