Diatoms of North AmericaDiatoms of North America
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Compare Mastogloia elliptica

(C.Agardh) Cleve in Schmidt et al. 1893

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Mastogloia grevillei has striae composed of double rows of areolae. Mastogloia pumila has lyrate lateral sterna and straight (not sinuous) raphe branches.

LM scalebar = 10 µm
Maselliptica1 Maselliptica2 Maselliptica3 Maselliptica4 Maselliptica4 L Maselliptica5 Maselliptica6
Length Range
17-57 µm
Width Range
8.1-12.8 µm
Striae in 10 µm
15-18

Mastogloia grevillei

W.Sm. 1856

Mastogloia grevillei LM5 Mastogloia grevillei LM6 Mastogloia grevillei LM4 Mastogloia grevillei LM2 Mastogloia grevillei LM1 Mastogloia grevillei LM3 Mastogloia grevillei LM7
Length Range
25-45 µm
Width Range
9-11 µm
Striae in 10 µm
8-10

Mastogloia pumila

(Grunow) Cleve 1895

Mastogloia pumila LM2 Mastogloia pumila LM1 Mastogloia pumila LM3 Mastogloia pumila LM4 Mastogloia pumila LM7 Mastogloia pumila LM5 Mastogloia pumila LM6
Length Range
18-50 µm
Width Range
7.0-10.2 µm
Striae in 10 µm
24-28