Notes ²

Diameter: 20 - 150 μm

Description ²

Thalassiosira spp. and other disc-shaped species. A. senarius can be easily distinguished by the undulated surface.

Actinoptychus senarius
Cells are discoid and usually solitary, but sometimes in loose clusters (Horner 2002). The
valve surface is divided into six
radial sectors, alternately raised and depressed, and visible as undulations in
girdle view. The central area is smooth and hexagonal; the rest is strongly
areolated (Cupp 1943). Chloroplasts are numerous and large (Hasle and Syvertsen 1997). Cells are yellow-brown in colour (Guiry 2012).
http://www.eos.ubc.ca/

Sources and Credits

1. (c) GTMResearchReserve, all rights reserved, uploaded by GTMResearchReserve
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)

iNat Map