Diatoms of North AmericaDiatoms of North America
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Compare Sellaphora fusticulus

(Østrup) Lange-Bert. 2000

Compare

Sellaphora laevissima has similar dimensions, valve outline and striation, but differs by a rectangular central area and polar bars visible in LM. Sellaphora alastos has a similar valve shape, but differs by a rectangular central area and a distinct conopeum. Sellaphora americana has wider valves and a distinct conopeum. Sellaphora bacillum has rounded apices and a distinct conopeum.

LM scalebar = 10 µm
Sellaphora fusticulus LM5 Sellaphora fusticulus LM1 Sellaphora fusticulus LM2 Sellaphora fusticulus LM3 Sellaphora fusticulus LM4
Length Range
29.1-45.5 µm
Width Range
7-9 µm
Striae in 10 µm
15-17 at the valve center, 18-20 at the apices

Sellaphora alastos

(M.H.Hohn and Hellerman) Lange-Bert. and Metzeltin 1996

Sellaphora alastos LM1 Sellaphora alastos LM2 Sellaphora alastos LM3 Sellaphora alastos LM4 Sellaphora alastos LM5 Sellaphora alastos LM6 Sellaphora alastos LM7
Length Range
41.0-82.0 µm
Width Range
11.0-17.0 µm
Striae in 10 µm
17-19 midway between valve center and apex

Sellaphora americana

(Ehrenb.) D.G.Mann 1989

Sellaphora americana LM5 Sellaphora americana LM4 Sellaphora americana LM8 Sellaphora americana LM7 Sellaphora americana LM6 Sellaphora americana LM3 Sellaphora americana LM9
Length Range
58.3-93.4 µm
Width Range
14.6-19.1 µm
Striae in 10 µm
16-18 midway between valve center and apex

Sellaphora bacillum

(Ehrenb.) D.G.Mann 1989

Sellaphora bacillum LM4 Sellaphora bacillum LM6 Sellaphora bacillum LM3 Sellaphora bacillum LM5 Sellaphora bacillum LM2 Sellaphora bacillum LM1
Length Range
30-45 µm
Width Range
9-10 µm
Striae in 10 µm
12-14

Sellaphora laevissima

(Kütz.) D.G.Mann 1989

Sellaphora laevissima LM20 Sellaphora laevissima LM3 Sellaphora laevissima LM6 Sellaphora laevissima LM10 Sellaphora laevissima LM16
Length Range
32-53 µm
Width Range
8.0-10.6 µm
Striae in 10 µm
17-19