Diatoms of North AmericaDiatoms of North America
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Compare Gomphoneis oreophila

Stancheva and Kociolek 2016

Compare

Gomphoneis linearis has a more linear valve outline and radial striae throughout the valve, especially around the central area. In addition, the central area of some G. linearis specimens have 1-2 slightly shortened radial striae that form a rhombic central area. Apical spines may be present. Small specimens of G. minuta could be confused with G. oreophila, but the longitudinal lines of G. minuta are positioned midway between the axial area and valve margin.

LM scalebar = 10 µm
Gomphoneis oreophila LM2 Gomphoneis oreophila LM3 Gomphoneis oreophila LM1 Gomphoneis oreophila LM6 Gomphoneis oreophila LM4 Gomphoneis oreophila LM7 Gomphoneis oreophila LM5
Length Range
51–105 µm
Width Range
10.3–16 µm
Striae in 10 µm
10–12

Gomphoneis minuta

(J.L.Stone) Kociolek and Stoermer 1988

Minuta 005 Minuta 002 Minuta 001 Minuta 003 Minuta 004
Length Range
20-128 µm
Width Range
14-26 µm
Striae in 10 µm
10-12

Also compare to

Gomphoneis linearis

Kociolek and Stoermer

Gomphoneis linearis

Kociolek and Stoermer 1986