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Kobayasiella jaagii

(F.Meister) Lange-Bert. 1999      Category: Symmetrical biraphid
BASIONYM: Navicula jaagii F.Meister 1934

REPORTED AS: Navicula jaagii (Krammer and Lange-Bertalot 1986, pg 185, figs 18-21) 

Karayevia suchlandtii


Kobayasiella madumensis

LM scalebar = 10 µm = 80 pixels.


Contributor: Loren Bahls - March 2012
Length Range: 29-32 µm
Width Range: 5.8-6.6 µm
Striae in 10 µm: 30-35 in the center, >40 at the ends


Valves are fusiform with short protracted and broadly rounded apices. The axial area is narrow. The central area is transversely rectangular with rounded but irregular borders. The raphe is filiform and straight. Proximal raphe ends are somewhat inflated. Distal raphe ends are bent in the same direction. Striae are radiate and more widely spaced near the valve center.

Original Description

Basionym: Navicula jaagii
Author: F.Meister 1934
Length Range: µm
Striae in 10 µm:

Original Description

Original Images

Cite This Page:
Bahls, L. (2012). Kobayasiella jaagii. In Diatoms of the United States. Retrieved May 25, 2018, from

Species: Kobayasiella jaagii

Contributor: Loren Bahls

Reviewer: Rex Lowe


Krammer, K. and Lange-Bertalot, H. (1986). Bacillariophyceae. 1. Teil: Naviculaceae. In: Ettl, H., J. Gerloff, H. Heynig and D. Mollenhauer (eds.) Süsswasserflora von Mitteleuropa, Band 2/1. Gustav Fisher Verlag, Jena. 876 pp.

Lange-Bertalot, H. (1996). Kobayasia bicuneus gen. et spec. nov. In: Iconographia Diatomologica, Annotated Diatom Micrographs (H. Lange-Bertalot, ed.), Vol. 4, pp. 277-287, Koeltz Scientific Books, Konigstein.

Lange-Bertalot, H. (1999). Kobayasiella nov. nom. ein neuer Gattungsname fur Kobayasia Lange-Bertalot 1996. In: Iconographia Diatomologica, Annotated Diatom Micrographs (H. Lange-Bertalot, ed.), Vol. 6, pp. 272-275, A.R.G. Gantner Verlag K.G., Vaduz.

Lange-Bertalot, H. and Metzeltin, D. (1996). Indicators of oligotrophy - 800 taxa representative of three ecologically distinct lake types, Carbonate buffered - Oligodystrophic - Weakly buffered soft water. Lange-Bertalot, H. (ed.), Iconographia Diatomologica. Annotated Diatom Micrographs. Vol. 2. Ecology, Diversity, Taxonomy. Koeltz Scientific Books. Königstein, Germany, 2:390 pp.

Meister, F. (1934). Seltene und neue Kieselalgen. Ber. Schweiz. Bot. Ges. 44: 87-108.

Links & ID's

Index Nominum Algarum (INA)

Transfer INA

California Academy of Sciences (CAS)

Kobayasiella jaagii CAS

North American Diatom Ecological Database (NADED)

NADED ID: 199003

Autecology Discussion

Kobayasiella jaagii was collected among submerged vegetation in Lake Winona in Glacier National Park, Montana. Here the pH was measured at 7.2 and specific conductance was 250 µS/cm. Krammer and Lange-Bertalot (1986) report this taxon as a northern-alpine species in oligotrophic flowing and standing waters.


Lake Winona, Glacier National Park, Montana: home of Kobayasiella jaagii.

Credit/Source: E. William Schweiger, National Park Service.