Length:20

Width:6

Striae:21

Collection 1401a

Pinnularia burkei Patr., Farlowia, 2(2) :189, pl. 3, fig. 1. 1945(Patrick and Reimer 1966).

Both images were taken utilizing DIC. The top image was at the standard 1000x magnification, the lower was taken at 1000x plus a 200% zoom.

This species has linear valve with capitate to subcapitate ends. It's axial area is narrow(Patrick and Reimer 1966).

Type Locality

[U.S.A., Pennsylvania], Pike County, Greeley; (squeezings from Sphagnum in swamp) (Patrick and Reimer 1966).

Ecology

This taxon is found in acidic water of low mineral content(Patrick and Reimer 1966).

Length is 18 to 22 micrometers (Patrick and Reimer 1966).

Width is 3 to 4 micrometers (Patrick and Reimer 1966).

Striae are 16 to 18 in 10 micrometers (Patrick and Reimer 1966).