Notes ²

Description ²

Fragilaria frustules are rectangular to lanceolate in girdle view. The pattern of ornamentation on the valve face is variable, but a central sternum is generally present. Frustules are joined by small marginal spines to form ribbon like (band-shaped) colonies. A single rimoportula is present, usually positioned at a distal end. Small, apical porefields are also present. Girdle bands are open. Living cells contain plastids composed of 2 plates, positioned against the valve face. (Spaulding, S., and Edlund, M. (2008). Fragilaria. In Diatoms of the United States. Retrieved February 07, 2016, from http://westerndiatoms.colorado.edu/taxa/genus/Fragilaria)

Cell Size: length 40-170um, width 2-5um

Sources and Credits

1. (c) GTM NERR, some rights reserved (CC BY-NC), https://www.flickr.com/photos/gtmnerr/24511477811/
2. (c) GTMResearchReserve, some rights reserved (CC BY-SA)

More Info

• iNat taxon page
• Biodiversity Heritage Library
• BOLD Systems BIN search
• Global Biodiversity Information Facility (GBIF)

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