Navicula venerablis

Hohn & Hellerman 1963      Category: Symmetrical biraphid
BASIONYM: Navicula venerablis Hohn & Hellerman 1963

REPORTED AS: Navicula globulifera (Patrick and Reimer 1966) 

Navicula vaneei

 

Navicula veneta

LM scalebar = 10 µm = 40 pixels.



Observations

Contributor: Marina Potapova - December 2009
Length Range: 51-70 µm
Width Range: 8.7-9.5 µm
Striae in 10 µm: 10-12

Description

Valves are narrowly lanceolate with drawn-out subcapitate ends. The raphe is lateral, almost straight, but proximal parts of the raphe branches are very slightly deflected toward the secondary side. Proximal raphe ends are expanded. The axial area is narrow, linear; the central area is transversely elliptical. Striae are strongly radiate and bent in the middle of the valve, convergent at the apices, 10-12 in 10 µm. Long and short striae sometimes alternate around the central area. Areolae are 34-36 in 10 µm.



Original Description

Basionym: Navicula venerablis
Author: Hohn & Hellerman 1963
Length Range: 59.3 µm
Width Range: 9.4 µm
Striae in 10 µm: 11-12

Original Description

Valve narrowly elliptic-lanceolate, ends produced, subcapitate; length 59.3 µm, width 9.3 µm; striae lineolate, radiate at center becoming convergent at ends 11-12/10 µm, length irregular at center; axial area linear, terminal nodules distinct, raphe straight, terminal ends hooked unilaterally; central area transapically ovate.

Original Images


Cite This Page:
Potapova, M. (2009). Navicula venerablis . In Diatoms of the United States. Retrieved October 30, 2014, from http://westerndiatoms.colorado.edu/taxa/species/navicula_venerablis

Species: Navicula venerablis

Contributor: Marina Potapova

Reviewer: Sam Rushforth

Citations

Hohn, M.H. and Hellerman, J. (1963). The taxonomy and structure of diatom populations from three Eastern North American rivers using three sampling methods. Transactions of the American Microscopical Society 82(3):250-329.

Links & ID's

Index Nominum Algarum (INA)

Original INA

California Academy of Sciences (CAS)

Navicula venerablis CAS

North American Diatom Ecological Database (NADED)

NADED ID:

Autecology Discussion