Nitzschia exilis
Sovereign 1958 Category: Nitzschioid
BASIONYM: Nitzschia exilis Sovereign 1958
LM scalebar = 10 µm = 80 pixels.
Observations
Contributor: Pat Kociolek - February 2011
Length Range: 24-64 µm
Width Range: 2-3 µm
Striae in 10 µm: Not visible in the light microscope
Description
Valves are delicate, narrowly lanceolate with rostrate and subcapitate apices. Keel strongly excentric, fibulae 15-17 in 10 µm and of differing sizes. The striae are not resolvable in the light microscope.
This specimen is easily overlooked in sample due to their delicate nature. Found in low numbers throughout the Pacific Northwest.
Original Description
Basionym: Nitzschia exilis
Author: Sovereign 1958
Length Range: µm
Striae in 10 µm:
Original Description
Original Images
Cite This Page:
Kociolek, P. (2011). Nitzschia exilis. In Diatoms of the United States. Retrieved June 18, 2013, from http://westerndiatoms.colorado.edu/taxa/species/nitzschia_exilis
Species: Nitzschia exilis
Contributor: Pat Kociolek
Reviewer: Marina Potapova
Image Credit: Pat Kociolek
- Valves delicate, narrowly lanceolate
- Breadth 2-3 µm
- Fibulae 15-17 in 10 µm
Valves are delicate, narrowly lanceolate with apices rostrate and subcapitate. Keel strongly excentric. Striae are not resolvable in the light microscope.
Compare
Nitzschia exilis is distinguished from N. columbiana, with which it co-occurs, by being more slender and having much finer fibulae. Sovereign (1958) suggested a resemblance with N. gracilis, differing from that commonly reported species by the fine fibulae and their variation in size within a single individual.
Nitzschia columbiana
Nitzschia gracilis
Hantzsch
Citations
Sovereign, H.E. (1958). The diatoms of Crater Lake, Oregon. Transactions of the American Microscopical Society 77(2):96-134.
Links & ID's
Index Nominum Algarum (INA)
California Academy of Sciences (CAS)
North American Diatom Ecological Database (NADED)
NADED ID: