Diatoms of North AmericaDiatoms of North America
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Compare Envekadea pachycephala

(Cleve) Atazadeh and Edlund in Atazadeh et al. 2014

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Envekadea pachycephala has a distinct fascia, in contrast to E. vanlandinghamii and E. pseudocrassirostris which lack fascia. In addition, the apices of E. pachycephala are capitate.

LM scalebar = 10 µm
Envekadea pachycephala LM6 Envekadea pachycephala LM1 Envekadea pachycephala LM5 Envekadea pachycephala LM2 Envekadea pachycephala LM3 Envekadea pachycephala LM4
Length Range
39-46 µm
Width Range
7-8 µm
Striae in 10 µm
28-29

Envekadea vanlandinghamii

Graeff, Kociolek and Rushforth 2013

Envekadea vanlandinghamii LM6 Envekadea vanlandinghamii LM5 Envekadea vanlandinghamii LM4 Envekadea vanlandinghamii LM3 Envekadea vanlandinghamii LM2 Envekadea vanlandinghamii LM1
Length Range
26-46 µm
Width Range
6-7.5 µm
Striae in 10 µm
25-27

Also compare to

Envekadea pseudocrassirostris

(Hust.) Van de Vijver in Gligora et al.