Encyonema latum

Krammer 1997      Category: Asymmetrical biraphid

Encyonema hebridicum

 

Encyonema nicafei

LM scalebar = 10 µm = 40 pixels.



Observations

Contributor: Sarah Spaulding - August 2010
Length Range: 50-84 µm
Width Range: 22-27 µm
Striae in 10 µm: 6-8

Description

Valves are strongly dorsi-ventral. The dorsal margin is broadly arched, while the ventral margin is only slightly expanded. Valves 50-84 μm long; 22-27 μm wide. The valve apices are rounded. The axial area is relatively broad in the central part, narrowing at the valve ends. The raphe branches are lateral and have a slight arch towards the ventral margin. Each raphe branch is positioned nearly centrally within the axial area. Proximal raphe ends are slightly expanded and dorsally deflected. Distal raphe ends curve slightly to the dorsal margin, but are deflected ventrally near the valve apices. The dorsal striae are divergent. Externally, the rows of dorsal areolae closest to the central area are oval, and become lineolate. Dorsally, central striae 6-8 in 10 μm and distal striae 4-5 in 5 μm. Ventral, central striae 7-8 in 10 μm, distal striae 5 in 5 μm. Areolae density within a central, dorsal stria is 6-7 in 5 μm.




Cite This Page:
Spaulding, S. (2010). Encyonema latum. In Diatoms of the United States. Retrieved October 21, 2014, from http://westerndiatoms.colorado.edu/taxa/species/encyonema_latum

Species: Encyonema latum

Contributor: Sarah Spaulding

Reviewer: Mark Edlund

Citations

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

Spaulding, S.A., Pool, J., Castro, S. and Hinz, F. (2010). Species within the genus Encyonema Kützing, including two new species Encyonema reimeri sp. nov. and E. nicafei sp. nov. and E. stoermeri nom. nov., stat. nov. Proceedings of the Academy of Natural Sciences of Philadelphia 160(1):57-71. 10.1635/053.160.0107

Links & ID's

Index Nominum Algarum (INA)

California Academy of Sciences (CAS)

North American Diatom Ecological Database (NADED)

NADED ID:

Autecology Discussion