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Compare Brachysira vitrea

(Grunow) R.Ross in B.Hartley 1986

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Valves of B. microcephala are lanceolate, not elliptic-lanceolate. Brachysira vitrea is found in calcareous waters, in contrast to the soft-water habitats of B. microcephala.

LM scalebar = 10 µm
Brachysira Vitrea 1 Brachysira Vitrea 2 Brachysira Vitrea 3 Brachysira Vitrea 4 Brachysira Vitrea 5 Brachysira Vitrea 6 Brachysira Vitrea 7
Length Range
12.4-25.4 µm
Width Range
4.3-5.9 µm
Striae in 10 µm
32-36

Brachysira microcephala

(Grunow) Compère 1986

Ansp 15991A 13 Na Brachysira microcephala LM5 Brachysira microcephala LM2 Brachysira microcephala LM1 Brachysira microcephala LM4 Brachysira microcephala LM3 Brachysira microcephala LM6
Length Range
17-30 µm
Width Range
3.5-7 µm
Striae in 10 µm
30-36

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