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Dictyocha (Dictyochophyceae)

Dictyocha speculum from Gulf of Maine USA. Skeleton-forming stage, identified by its hexagonal shape.

Dictyocha speculum is preferred over Distephanus speculum, although previously the two genera were recognized separately on the basis of rectangular (Dictyocha) vs. hexagonal (Distephanus) skeletons.

Hexagonal siliceous basket-shaped skeleton of D. speculum .

D. fibula
Image posted online

Dictyocha speculum
Electron microscope image by Mats Kuylenstierna, Department of Marine Botany, University of Gothenburg posted online

Dictyocha octonaria from New Zealand
Photograph by Chang (2015)

Chang, F.H. 2015. Cell morphology and life history of Dictyocha octonaria (Dictyochophyceae, Ochrophyta) from Wellington Harbour, New Zealand. Phycological Research 63:253-264.

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