Navicula elorantana

Taxon ID: 190
Author: Lange-Bertalot    
Basionym:
Synonym:

 

Images

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LM image scalebar = 10 µm = pixels not measured     

 

Observations

Observations:
Length:
Width:
Striae:

Description:

Valves linear-elliptical, in the middle clearly tumid with (sub-)capitate apices (L 9-14µm, W 4-5µm, 18-20 striae in 10µm). Axial area narrow, linear. Central area rectangular, widening towards the margins, bordered by several shortened striae. Raphe filiform with distinct central pores. In SEM, the raphe is sometimes placed on a raised sternum. Transapical striae radiate in the middle, parallel to convergent towards the apices.

Morphology:
Distribution:

Autecology:

 

Notes:

Common in slightly acid to circumneutral lakes and alkaline rivers with low specific conductance and nutrient values.Unknown due to confusion with N. seminulum. Present on Kerguelen (personal observation).Closely resembles N. seminulum but can be distinguished by the more tumid outline in the middle and the (sub-)capitate apices. The presence of the raised sternum is somewhat different from the original description. Still we believe that we are dealing here with N. elorantana. This taxon has been reported in the past as N. vitabunda and N. pseudoventralis but after thorough examination of some samples the identification was corrected.

 

 

Other sites with Navicula elorantana

  • Ile de la Possession (moist habitats), Crozet Archipelago

Original Type Description

Author: Lange-Bertalot
Length: 9-14µm
Width: 4-5µm
Striae: 18-20 striae in 10µm

Original Description:

 

New combination

Author:

 

Citations

Index Nominum Algarum (INA):

  • Original
  • If an INA link is available, it will be shown above
  • The INA is a bibliographic reference "card file" for algal taxonomy, containing nearly 200,000 names of algae (in the broad sense).

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