Diatoms of North AmericaDiatoms of North America
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Compare Craticula ambigua

(Ehrenb.) D.G.Mann 1990

Compare

Craticula cuspidata has a greater size range and acute, rounded and, occasionally, slightly subrostrate ends.

Craticula accomodiformis is smaller in length.

Craticula riparia has smaller, narrower valves.

LM scalebar = 10 µm
Craticula ambigua LM4 Craticula ambigua LM2 Craticula ambigua LM1 Craticula ambigua LM6 Craticula ambigua LM5 Craticula ambigua LM3
Length Range
38-75 µm
Width Range
12-19 µm
Striae in 10 µm
13-21 in the valve center, 17-21 at the ends

Craticula cuspidata

(Kütz.) D.G.Mann 1990

C Cuspidata Gray 1 C Cuspidata Gray 5 C Cuspidata Gray 4 C Cuspidata Valve Forms Gray C Cuspidata Gray 3 C Cuspidata Gray 2
Length Range
95-157 µm
Width Range
24-36 µm
Striae in 10 µm
12-14 transverse, 24-26 longitudinal

Craticula accomodiformis

Lange-Bert. 1993

Craticula accomodiformis LM1 Craticula accomodiformis LM2 Craticula accomodiformis LM3 Craticula accomodiformis LM4 Craticula accomodiformis LM5 Craticula accomodiformis LM6 Craticula accomodiformis LM7
Length Range
30.5-36.4 µm
Width Range
9.9-13 µm
Striae in 10 µm
23-25 in the center valve, 25-29 in the ends

Craticula riparia

(Hust.) Lange-Bert. 1993

Craticula riparia LM1 Craticula riparia LM2 Craticula riparia LM3 Craticula riparia LM4 Craticula riparia LM5 Craticula riparia LM6 Craticula riparia LM7
Length Range
38-48 µm
Width Range
8.7-10.7 µm
Striae in 10 µm
17-20 at valve center, 16-20 at the ends