Staurosira pinnata

Taxon ID: 266
Author: Ehrenberg 1991   
Basionym:
Synonym: Fragilaria pinnata

 

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LM image scalebar = 10 µm = pixels not measured     

 

Observations

Observations: Bart Van de Vijver
Length: 10-25µm
Width: 3-4,5µm
Striae: 10 striae in 10µm

Description:

Valves linear to elliptical lanceolate, slightly heteropolar (L 10-25µm, W 3 4,5µm, 10 striae in 10µm). Axial area fairly narrow, linear to slightly lanceolate. Striae parallel, composed of slit-like areolae, continuing without interruption onto the mantle face. Marginal spines almost always detected, sometimes occurring in groups of 2-4. No rimoportula, but one or two apical porefields present. Girdle consists of 5 separate copulae, slightly curved near the poles.

Morphology: Araphid
Distribution:

Autecology:

 

Notes:

Common in all samples, mostly in standing waterbodies. pH-optimum 7,2. Preference for wet mosses (optimal F-value III). Less abundant in soil samples.Widespread in the entire (Sub-)Antarctic Region.Le Cohu (1999) reported the presence of entirely perforated 'connecting bridges' between the striae. No such structures have been observed within the Crozet population.

 

 

Other sites with Staurosira pinnata

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

Original Type Description

Author: Ehrenberg 1991
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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