Diatoms of North AmericaDiatoms of North America
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Compare Cavinula lapidosa

(Krasske) Lange-Bert. 1996

Compare

Cavinula davisae is more broad and has an oval shaped central area. Cavinula cocconeiformis is elliptic to lanceolate in outline and has a small oval central area. Cavinula variostriata is elliptic, with an elliptic central area.

LM scalebar = 10 µm
Cavinula Lapidosa Ct10004 A 121917 34 C Cavinula Lapidosa Me10011 B 101117 153 C Cavinula Lapidosa Ar035 Nrsa2031 031517 02 C Cavinula Lapidosa Ar035 Nrsa2031 031517 05 C Cavinula Lapidosa Nh10001 V2 A 120517 30 C
Length Range
12.5-21.7 µm
Width Range
6.1-8.2 µm
Striae in 10 µm
26-28 in the center valve, 28-30 at the ends

Cavinula davisiae

Bahls 2013

Cavinula davisiae LM1 Cavinula davisiae LM2 Cavinula davisiae LM3 Cavinula davisiae LM4 Cavinula davisiae LM5 Cavinula davisiae LM6 Cavinula davisiae LM7
Length Range
14-31 µm
Width Range
7.5-9.9 µm
Striae in 10 µm
26-32

Cavinula cocconeiformis

(Gregory ex Grev.) D.G.Mann and Stickle in Round, R.M.Crawford and D.G.Mann 1990

Cavinula cocconeiformis LM7 Cavinula cocconeiformis LM1 Cavinula cocconeiformis LM2 Cavinula cocconeiformis LM3 Cavinula cocconeiformis LM4 Cavinula cocconeiformis LM5
Length Range
9-28 µm
Width Range
6-9 µm
Striae in 10 µm
26-32 in the center valve, 28-34 at the ends

Cavinula variostriata

(Krasske) D.G.Mann and A.J.Stickle 1990

Cavinula variostriata LM6 Cavinula variostriata LM4 Cavinula variostriata LM3 Cavinula variostriata LM1 Cavinula variostriata LM5 Cavinula variostriata LM2
Length Range
16-35 µm
Width Range
7-8 µm
Striae in 10 µm
24-28