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Encyonema hebridicum

(Gregory) Grunow in Cleve and J.D.Möller 1877      Category: Asymmetrical biraphid
SYNONYM(S): Cymbella hebridica Cleve 

Encyonema hamsherae


Encyonema lange-bertalotii

LM scalebar = 10 µm = 40 pixels.


Contributor: Carrie Graeff - May 2012
Length Range: 30-63 µm
Width Range: 8-11 µm
Striae in 10 µm: 9-10 at the center


Valves are moderately dorsiventral with slightly or moderately rostrate, narrowly rounded apices. The dorsal margin is moderately arched. The ventral margin is moderately tumid at the center in larger specimens to convex in smaller specimens. The axial area is narrow. The central area is rounded in larger specimens and indistinct in small specimens. The striae are slightly radiate across most of the valve, except at the apices where they are slightly convergent. Internally, the proximal raphe ends are strongly deflected dorsally.

Original Description

Author: Gregory
Length Range: µm
Striae in 10 µm:

Original Description

Original Images

Cite This Page:
Graeff, C. (2012). Encyonema hebridicum. In Diatoms of the United States. Retrieved May 24, 2018, from

Species: Encyonema hebridicum

Contributor: Carrie Graeff

Reviewer: Sarah Spaulding


Cleve, P.T. (1894). Synopsis of the Naviculoid Diatoms, Part I. Kongliga Svenska-Vetenskaps Akademiens Handlingar 26(2):1-194, 5 pls.

Krammer, K. (1997). Die cymbelloiden Diatomeen. Eine Monographie der weltweit bekannten Taxa. Teil 2. Encyonema part., Encyonopsis and Cymbellopsis. Bibliotheca Diatomologica 37:1-469.

Links & ID's

Index Nominum Algarum (INA)

Original INA

California Academy of Sciences (CAS)

Encyonema hebridicum CAS

North American Diatom Ecological Database (NADED)

NADED ID: 110035

Autecology Discussion