Diatoms of North AmericaDiatoms of North America
Return to overview

Guide to Gyrosigma acuminatum

(Kütz.) Rabenh. 1853

Gyrosigma Acuminatum Guide
  1. Valves slender, sigmoid
  2. Central area longitudinally elliptical
  3. Transverse and longitudinal striae equally distinct

Valves are slender and sigmoid, with a longitudinally elliptic central area. The distal raphe is slightly eccentric, positioned closer to the convex side. Proximal raphe ends are curved in opposite directions. The central transverse striae are slightly radiate, outside of the central part of the valve the transverse striae are parallel. Transverse and longitudinal striae are equally spaced.

Diatoms of North America is running a fundraising campaign to keep the servers in operation. We need you to reach our $25,000 fundraising goal.

If you use and appreciate DONA, make your DONAtion today.

For the Gift Designation, type "diatom" in the search box and select "Diatom Lab Research Fund". This is the designated fund for diatoms.org.

Donate today