Planothidium lanceolatum

Taxon ID: 243
Author: Brébisson    
Basionym:
Synonym: Achnanthidium lanceolatum, Achnanthes lanceolata var. lanceolata

 

Images

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LM image scalebar = 10 µm = pixels not measured     

 

Observations

Observations: Bart Van de Vijver
Length: 10-35µm
Width: 6-10µm
Striae: 12-16 striae in 10µm

Description:

Valves elliptical to elliptical-lanceolate with rounded ends. (L 10-35µm, W 6 10µm, 12-16 striae in 10µm). RV: axial area narrow, linear. Central area rectangular, not extending to the valve margin (bordered by 2-4 short striae). Raphe filiform, terminal fissures both curved towards the same side of the valve. ARV: axial area narrow, lanceolate with a typical U-shaped sinus.

Morphology: Monoraphid
Distribution:

Autecology:

 

Notes:

Quite common in circumneutral oligotrophic (very low phosphate and ammonium values) pools and lakes where it can dominate the diatom flora. In mosses, the mean F value is 3,5±1,8. Also regularly found in semi-wet, circumneutral to even slightly alkaline soil samples.Widespread in the entire (Sub-)Antarctic Region.

 

 

Other sites with Planothidium lanceolatum

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

Original Type Description

Author: Brébisson
Length:
Width:
Striae:

Original Description:

 

New combination

Author: Lange-Bertalot 1989

 

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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