Diatoms of North AmericaDiatoms of North America
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Compare Cymbopleura apiculata

Krammer 2003

Compare

Valves of C. anglica are smaller with rostrate to subcapitate apices that are bluntly rounded. Valves of C. subcuspidata are elliptic-lanceolate with a length-to-width ratio of 3.3-4.4 and bluntly rounded rostrate to subcapitate apices.

LM scalebar = 10 µm
Cymboapiculata1 Cymboapiculata2 Cymboapiculata3 Cymboapiculata4 Cymboapiculata5 Cymboapiculata6
Length Range
70-86 µm
Width Range
24-28 µm
Striae in 10 µm
8-10 (dorsal) and 9-11 (ventral) at the valve center; 13-15 (dorsal) and 14-16 (ventral) at the apices

Cymbopleura anglica

(Lagerstedt) Krammer 2003

Cymbopleura anglica LM1 Cymbopleura anglica LM2 Cymbopleura anglica LM3 Cymbopleura anglica LM4 Cymbopleura anglica LM5 Cymbopleura anglica LM6 Cymbopleura anglica LM7
Length Range
39-52 µm
Width Range
13.0-18.2 µm
Striae in 10 µm
10-12 on the dorsal side in the valve center, slightly higher density on ventral side and near apices

Cymbopleura subcuspidata

(Krammer) Krammer 2003

Cymbopleura subcuspidata LM1 Cymbopleura subcuspidata LM2 Cymbopleura subcuspidata LM3 Cymbopleura subcuspidata LM5 Cymbopleura subcuspidata LM6
Length Range
67-111 µm
Width Range
19-25 µm
Striae in 10 µm
9-12 (dorsal and ventral) at the valve center; 12-15 (dorsal) and 13-16 (ventral) at the apices