Diatoms of North AmericaDiatoms of North America
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Compare Ninastrelnikovia gibbosa

(Hust.) Lange-Bert. and Fuhrmann 2014

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Chains of Fragilaria, Staurosira, Pseudostaurosira, Humidophila, and Diadesmis could all be confused with this taxon. In addition, Chamaepinnularia hassiaca and C. mediocris are similar in size, outline, and general stria structure.

LM scalebar = 10 µm
Ninastrelnikovia gibbosa LM3 Ninastrelnikovia gibbosa LM7 Ninastrelnikovia gibbosa LM4 Ninastrelnikovia gibbosa LM8 Ninastrelnikovia gibbosa LM6 Ninastrelnikovia gibbosa LM5 Ninastrelnikovia gibbosa LM9
Length Range
18.5-21 µm
Width Range
4.0-5 µm
Striae in 10 µm
15-17

Chamaepinnularia hassiaca

(Krasske) Cantonati and Lange-Bert. 2009

Chamaepinnularia Hassiaca Me10020 A 042318 01 Csharpened Chamaepinnularia Hassiaca Me10020 A 102017 185 Csharpened Chamaepinnularia Hassiaca Cthp001 A 112117 37 Csharpened Chamaepinnularia Hassiaca Instaar15632 B 031517 02 Csharpened Chamaepinnularia Hassiaca Me10019 A 101817 106 Csharpened
Length Range
8.8-10.8 µm
Width Range
2.5-2.7 µm
Striae in 10 µm
20-25

Chamaepinnularia mediocris

(Krasske) Lange-Bert. in Lange-Bert. and Metzeltin 1996

Chamaepinnularia mediocris LM4 Chamaepinnularia mediocris LM5 Chamaepinnularia mediocris LM6 Chamaepinnularia mediocris LM1 Chamaepinnularia mediocris LM2 Chamaepinnularia mediocris LM3
Length Range
9-16 µm
Width Range
2.7-3.0 µm
Striae in 10 µm
20-24

Pseudostaurosira pseudoconstruens

(Marciniak) D.M.Williams and Round 1987

Pseudostaurosira pseudoconstruens LM4 Pseudostaurosira pseudoconstruens LM1 Pseudostaurosira pseudoconstruens LM6 Pseudostaurosira pseudoconstruens LM7 Pseudostaurosira pseudoconstruens LM3 Pseudostaurosira pseudoconstruens LM2
Length Range
8-15.5 µm
Width Range
3.5-7 µm
Striae in 10 µm
8.5 near the center increasing to 18 at the apices

Humidophila perpusilla

(Grunow) R.L.Lowe, Kociolek, J.R.Johans., Van de Vijver, Lange-Bert. and Kopalová 2014

Humidophila Perpusilla Nh10063 A 121117 26 C Humidophila Perpusilla Nyhp001 A 121417 15 C Humidophila Perpusilla Nh10063 A 121117 60 C Humidophila Perpusilla Vt10094 A 111017 48 C Humidophila Perpusilla Me10009 B 101317 137 C Humidophila Perpusilla Me10043 A 110117 48 C
Length Range
9.7-17.7 µm
Width Range
3.7-4.7 µm
Striae in 10 µm
32-36

Humidophila schmassmannii

(Hust.) Buczkó and Wojtal 2015

C Schmass 1 C Shmassmannii 113890A 104 1X15 5 C Shmassmannii 113890A 104 5X156 C Shmassmannii 114048B 100X15
Length Range
7.4-8.4 µm
Width Range
2.4-4.0 µm
Striae in 10 µm
30-43