Pinnuavis gebhardii

Taxon ID: 294
Author: Krasske 1938   
Basionym: Navicula gebhardii



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LM image scalebar = 10 µm = pixels not measured     



Observations: Bart Van de Vijver
Length: 28-34µm
Width: 9-10µm
Striae: 13-15 striae in 10µm


Valves elliptical-lanceolate with bluntly rounded ends (L 28-34µm,W 9-10µm, 13-15 striae in 10µm). Axial area very narrow, linear. Central area stauroform, sometimes bordered by very short striae. The central part is depressed, due to two weakly raised parallel ribs, close to the valve margins. Raphe filiform, slightly curved with clearly marked central pores and hooked terminal fissures. Transapical striae curved to sigmoid, convergent near the poles.

Morphology: Naviculoid




Found in several soil samples. Seems to prefer elevated salinity conditions.South Shetland Islands (Björck et al. 1991), James Ross Island (Björck et al. 1996), Horseshoe Island (Wasell & Hakansson 1992, Wasell 1993).Based on the characteristics of the axial area and the raphe endings, this taxon clearly belongs to the genus Pinnuavis.



Other sites with Pinnuavis gebhardii

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

Original Type Description

Author: Krasske 1938

Original Description:


New combination

Author: Van de Vijver



Index Nominum Algarum (INA):

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  • 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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