laneallen's Identifications
Photos / Sounds
What
Aulacoseira herzogiiObserver
izzirytlewskiDescription
Sample was taken and digested in 2004.
Photos / Sounds
What
Cymbella mexicanaObserver
trolliDescription
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.
Photos / Sounds
What
Fragilaria mesoleptaObserver
reespeciesDescription
central area constricted
parallel striae
rostrate to subcapitate apices
narrow, slightly panduriform valves
Photos / Sounds
Observer
reespeciesDescription
valves are linear-lanceolate
very broad axial area
apices bent slightly or straight
no distinct central area
costate striae
Photos / Sounds
What
Cocconeis pediculusObserver
reespeciesDescription
saddle shaped frustule
rapheless valve
elongated areolae
hyaline area on valve with raphe
Photos / Sounds
What
Navicula tripunctataObserver
reespeciesDescription
striae nearly parallel
central area symmetric & elliptical
linear-lanceolate valve shape
wedge shaped ends
Photos / Sounds
What
Encyonema leibleiniiObserver
reespeciesDescription
broadly rounded valve apices
striae radiate in center
striae become parallel near the apices
distal raphe fissures end before valve margin
Photos / Sounds
What
Geissleria decussisObserver
reespeciesDescription
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
Photos / Sounds
What
Fragilaria cyclopumObserver
reespeciesDescription
valves are arcuate
central area is not swollen
subcapitate apices
araphid
Stats
- 2563
