Length:13.5

Width:7

Costae: 4

Striae:

Collection 1341a

Ehr., Phys. Abh. Akad. Wiss. Berlin, for 1838:57, pl. 2(1), fig. 9. 1839 (Patrick and Reimer 1966).

Synonyms (Patrick and Reimer 1966)

Odontidium hiemale var.mesodon (Ehr.) Grun., Verh. Zool.-Bot. Ges. Wien, 12: 357. 1862.

Diatoma hiemale var.mesodon (Ehr.) Grun. in V.H., Syn. Diat. Belgique, pl. 51, figs. 3-4. 1881.

Ecology

This taxon may be found in waters with mesotrophic conditions (Patrick and Reimer 1966).

Length is 12-40 micrometers (Patrick and Reimer 1966).

Breadth is 6-15 micrometers (Patrick and Reimer 1966).

Striae range is 18-24 per 10 micrometers (Patrick and Reimer 1966).

Costae range is 2-4 per 10 micrometers (Patrick and Reimer 1966).