Kobayasiella jaagii
(Meister) Lange-Bertalot 1999 Category: Symmetrical biraphid
BASIONYM: Navicula jaagii Meister 1934
REPORTED AS: Navicula jaagii (Krammer and Lange-Bertalot 1986, pg 185, figs 18-21)
LM scalebar = 10 µm = 40 pixels.
Observations
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
Description
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: 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 21, 2013, from http://westerndiatoms.colorado.edu/taxa/species/kobayasiella_jaagii
Species: Kobayasiella jaagii
Contributor: Loren Bahls
Reviewer: Rex Lowe
Image Credit: Loren Bahls
- Valves elliptic-lanceolate
- Apices protracted, broadly rounded
Kobayasiella jaagii has fusiform valves with short, protracted and broadly rounded apices.
Compare
Kobayasiella okadae has linear-lanceolate valves, capitate apices, and longitudinal lines. Kobayasiella subtilissima has linear-lanceolate valves and capitate apices.
Kobayasiella okadae
Kobayasiella subtilissima
Citations
Krammer, K. and Lange-Bertalot, H. (1986). Bacillariophyceae. 1. Teil: Naviculaceae. In: Ettl, H., J. Gerloff, H. Heynig and D. Mollenhauer (eds.) Susswasserflora 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)
California Academy of Sciences (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.
Images
Lake Winona, Glacier National Park, Montana: home of Kobayasiella jaagii.
Credit/Source: E. William Schweiger, National Park Service.