Neidium affine
var.
undulatum
(Grun.) Hust.
Length:
35
Width:
10
Striae:
22
Puncta:
Collection
1788
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Authority information
(Grun.) Cl., K. Svenska Vet.-Akad. Handl., Ny Foljd, 26(2):68. 1894 (
Patrick and Reimer 1966
).
Other images
This image was taken utilizing DIC for the specimen above.
More information
This taxon has a valve that has triunduylate margins. The ends are broad and subrostrate The striae are course and is larger than
affine
(
Patrick and Reimer 1966
). This taxon is found in Lake Superior (E.F. Stoermer collection).
Type Locality
Wyoming (
Patrick and Reimer 1966
).
Synonyms
Navicula affinis
var.
undulat
Grun., Verh. Zool.-Bot. Ges. Wien, 10:544, pl. 5, fog/ 6. 1860 (
Patrick and Reimer 1966
).
Neidium affine
f.
undulatum
(Grun.) Hust.
in
Pasch., sussw.-Fl. Mitteleuropas, Heft 10, Aufl. 2, p.243. 1930 (
Patrick and Reimer 1966
).
Neidium amphirhynchus
var.
undulatum
(Grun.) Meist., Beitr. Kryptog.-Fl. Schweiz, 4(1), p. 107, pl. 14, fig. 18. 1912 (
Patrick and Reimer 1966
).
Ecology
This taxon may be found in lakes (
Patrick and Reimer 1966
).
Size ranges and morphology
Length is 55 to 80 micrometers (
Patrick and Reimer 1966
).
Width is 14 to 17 micrometers (
Patrick and Reimer 1966
).
Striae are 20 to 22 in 10 micrometers (
Patrick and Reimer 1966
).
Puncta are 20 in 10 micrometers (
Patrick and Reimer 1966
).