Lange-Bertalot, Kulikovskiy et Witkowski 2010      Category: Symmetrical biraphid
TYPE SPECIES: Boreozonacola hustedtii Lange-Bertalot, Kulikovskiy et Witkowski




Smallest to largest - 2 taxa sorted by maximum length

Image Credit: Ditmar Metzeltin

CLASS: Bacillariophyceae
  ORDER: Naviculales

  1. Valves linear, often with triundulate margins
  2. Areolae coarse
  3. Central area oval to round

Valves of Boreozonacola are linear, often with tumid central and subapical margins. The raphe is lateral. The proximal raphe ends are simple, curving to the primary side of the valve. The distal raphe ends curve to the secondary side of the valve. The axial area is narrow and linear. The central area is round. Striae are radiate and are composed of coarse areolae. Voight discontinuities are often present.

The genus Boreozonacola is named for the boreal zones of Eurasia and North America for which species in this genus are found. Taxa include the former Navicula pseudosilicula var. olympica Sovereign (as Boreozonacola olympica (Sovereign) Lange-Bertalot et al.), Navicula pseudosilicula Hustedt (Boreozonacola hustedtii Lange-Bertalot, Kulikovskiy & Witkowski) and Navicula lacuna Patrick & Freese (as Boreozonacola lacuna (Patrick & Freese) Lange-Bertalot, Kulikovskiy & Witkowski).

Cite This Page:
Spaulding, S., and Metzeltin, D. (2011). Boreozonacola. In Diatoms of the United States. Retrieved April 22, 2018, from

Contributor: Sarah Spaulding | Ditmar Metzeltin - September 2011