Psammothidium confusum var. atomoides

Taxon ID: 318
Author: Manguin 1954   
Basionym: Achnanthes confusa var. atomoides
Synonym:

 

Images

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LM image scalebar = 10 µm = pixels not measured     

 

Observations

Observations: Bart Van de Vijver
Length: 9-11 µm
Width: 3-4µm
Striae: 28-34 transapical striae in 10µm

Description:

Valves linear, slightly convex with rounded apices. (L 9-11 µm, W 3-4µm, 28-34 transapical striae in 10µm). RV: lanceolate axial area with filiform raphe, central area stauroneiform. ARV: narrow axial area, sometimes a little bit wider in the middle, central area clearly lacking. SEM structure of the areolae as in the nominate species.

Morphology: Monoraphid
Distribution:

Autecology:

 

Notes:

Same ecology as the nominate species.Kerguelen (Bourrelly & Manguin 1954, Le Cohu & Maillard 1983), Macquarie Island (McBride et al. 1999).Achnanthes confusum var. atomoides Manguin was separated from the nominate species by the lack of the wider longitudinal area on the araphid valve (Bourrelly & Manguin 1954, Le Cohu & Maillard 1983). Lange-Bertalot & Krammer (1989) include the variety within the nominate species. However, when comparing populations of both the nominate species and the variety, there is sufficient morphological evidence that the variety atomoides should be kept as a separate variety.

 

 

Other sites with Psammothidium confusum var. atomoides

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

Original Type Description

Author: Manguin 1954
Length:
Width:
Striae:

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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