laneallen's Identifications
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someplantΠεριγραφή
Magnification of photos: 100×, 200×, 200×, 200×, 200×, 400×, 400×, 400×, 400×, 400×
Habitat: muddy water, collected from the bank of a wide stream.
Photo taken with a Celestron PentaView Digital Microscope. According to their website, the FOV at 100× is 600 µm.
https://www.celestron.com/blogs/knowledgebase/what-is-my-digital-microscopes-field-of-view
Very large: estimated to be about 200 µm.
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izzirytlewskiΠεριγραφή
Sample was collected and plated in early 2000's.
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trolliΠεριγραφή
The first observation of Cymbella mexicana was made in January 2021 on diatom strew slides (mounting media Naphrax) prepared from sediment/sand collected from the Havel river's shallow zone at Premnitz/Brandenburg. Length: 55-125 µm; width: 19 - 35 µm. Striae: 7-8/10 µm. The single central stigma, the size and the coarse dots makes this species easily determinable.
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reespeciesΠεριγραφή
central area constricted
parallel striae
rostrate to subcapitate apices
narrow, slightly panduriform valves
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reespeciesΠεριγραφή
valves are linear-lanceolate
very broad axial area
apices bent slightly or straight
no distinct central area
costate striae
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reespeciesΠεριγραφή
saddle shaped frustule
rapheless valve
elongated areolae
hyaline area on valve with raphe
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reespeciesΠεριγραφή
striae nearly parallel
central area symmetric & elliptical
linear-lanceolate valve shape
wedge shaped ends
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reespeciesΠεριγραφή
broadly rounded valve apices
striae radiate in center
striae become parallel near the apices
distal raphe fissures end before valve margin
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reespeciesΠεριγραφή
valves elliptical - lanceolate
apices are capitate
within 6 - 9 µm wide
within 16 - 30 µm length
short alternating striae in central area
striae radiate, bent
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reespeciesΠεριγραφή
valves are arcuate
central area is not swollen
subcapitate apices
araphid
Στατιστικά
- 2564
