Encyonema vulgare

Taxon ID: 142
Author: Krammer 1997   
Basionym:
Synonym:

 

Images

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LM image scalebar = 10 µm = pixels not measured     

 

Observations

Observations: Bart Van de Vijver
Length: 37-40µm
Width: 8-9,5µm
Striae: 11 striae in 10µm

Description:

Valves strongly dorsiventral, half-lanceolate with sharply rounded ends (L 37 40µm, W 8-9,5µm, 11 striae in 10µm, 24-27 puncta/striae in 10µm, L/W ratio 4-4,6). The dorsal side is quite convex while the ventral side is straigth with a belly-shaped outline. Axial area narrow but slightly lanceolate in the middle. No clear central area present. Striae slightly radiate, a little bit more spaced in the middle. Puncta appear in LM elongated. Ventral striae grouped near the poles. Raphe filiform with proximal dorsally bent endings. Terminal fissures clearly marked, hooked ventrally.

Morphology: Cymbelloid
Distribution:

Autecology:

 

Notes:

Similar to E. silesiacum. Only a few valves (6) were found, belonging to E . vulgare.No records found but this taxon has recently been established by Krammer. It is possible that individuals of E. vulgare have been included in other (former) Cymbella taxa.It appeared not always easy to separate E. vulgare from E. silesiacum, especially since both taxa appear in the same samples. The latter however is always smaller with a lower L/W ratio.

 

 

Other sites with Encyonema vulgare

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

Original Type Description

Author: Krammer 1997
Length:
Width:
Striae:

Original Description:

 

New combination

Author:

 

Citations

Index Nominum Algarum (INA):

  • 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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