Photos / Sounds
What
Encyonema triangulumObserver
enviroethanDescription
scale bar 10 μm
valves: dorsiventral, both margin convex lanceolate
apices: apiculate, slightly deflected towards ventral side
raphe lateral, proximal ends deflected towards dorsal side, terminal ends deflected to the ventral side
univariate striae visible in LM
Photos / Sounds
What
Genus DenticulaObserver
enviroethanDescription
Scale bar = 10 µm
valves: small, lanceolate
apices: rounded, protracted
uniseriate striae
third picture- girdle view
Photos / Sounds
What
Navicula oblongaObserver
enviroethanDescription
Scale bar = 10 µm
valves: nearly elliptic
apices: subrostrate
striae radial, chambered
central area rounded
proximal and distal raphe ends deflect in opposite directions
Photos / Sounds
What
Stauroneis gracilisObserver
enviroethanDescription
scale bar 10 μm
valves: lanceolate
apices: rounded, subrostrate
axial area broad
unisariate radial striae
central area without striae, stauros
proximal ends and distal ends of raphe hooked in opposite direction
Photos / Sounds
What
Fragilaria cyclopumObserver
enviroethanDescription
Scale bar = 10 µm
valves arcuate, lineate, narrower towards apices
apices subcapitate
central area with ghost striae, slightly undulated towards ventral side
Photos / Sounds
What
Amphora pediculusObserver
enviroethanDescription
Scale bar = 10 µm
small valves
dorsiventral, dorsal margin arcuate, ventral straight
central area lacks striae
straight raphe
right picture: whole frustule
Photos / Sounds
What
Navicula reinhardtiiObserver
enviroethanDescription
scale bar 10 μm
valves: elliptical, oblong
apices: rounded
striae shortened on central area, radial, nearly parallel towards apices
simple raphe with curved distal ends
Photos / Sounds
What
Aneumastus minorObserver
enviroethanDescription
Scale bar 10 μm
valves: lanceolate
apices: acute
straiae: irregularly elongate, organized in 3 rows.
simple raphe
Photos / Sounds
Observer
enviroethanDescription
Scale bar = 10 µm
monoraphid diatoms-only rappelled valve presented
linear hyaline area on the valve center
striae evenly spaced
Photos / Sounds
What
Geissleria decussisObserver
enviroethanDescription
Scale bar = 10 µm
valves: elliptical-lanceolate
apices: rostrate
striae radiate, sigmoid shaped, shortened on the valve center
central area bears stigma
simple raphe
Photos / Sounds
What
Epithemia adnataObserver
enviroethanDescription
Scale bar = 10 µm
dorsiventral valves
round apices, deflected dorsally
2-5 striae between costae, areolae visible in LM
raphe curves from ventral margin on the valve face-triangular central shape
right picture: girdle view
Photos / Sounds
What
Amphora copulataObserver
enviroethanDescription
scale bar 10 μm
valves: semi-elliptical to semi-lanceolate. dorsal margin convex, arche shaped, ventral margin concave
apices: rounded
raphe: distal and proximal ends deflected dorsally
on central area striae shortened on dorsal side, absent on ventral
Photos / Sounds
What
Navicula radiosaObserver
enviroethanDescription
Scale bar = 10 µm
valves: lanceolate
apices: rounded
central area rhombic
striae radial on the central area
raphe slightly undulated
Photos / Sounds
What
Eunotia bilunarisObserver
enviroethanDescription
Scale bar = 10 µm
valves: arcuate, slightly narrower towards apices
rounded apices
evenly spaced striae
raphe curves from the ventral margin on the valve face (visible on right picture)
Photos / Sounds
What
Genus NitzschiaObserver
enviroethanDescription
scale bar 10 μm
valves: linear
apices rounded
dense striae, hardly visible in LM
raphe on the lest side of each specimen
Photos / Sounds
What
Iconella teneraObserver
enviroethanDescription
Scale bar = 10 µm
valves heteropolar, elliptic
regularly spaced porcae
central line narrow
Photos / Sounds
Observer
enviroethanDescription
Scale bar = 10 µm
valves clavate with two undulation across the margin
apices: near the headpole valve broadens and becomes aciculate on the apex, footpole is rounded
uniseriate striae visible in LM
central area bears stigma
raphe undulates
Photos / Sounds
What
Genus PlanothidiumObserver
enviroethanDescription
Scale bar = 10 µm
valves lanceolate
apices rounded
central area blank on raphe valve
raphelles valve with a hood
Photos / Sounds
What
Epithemia gibbaObserver
enviroethanDescription
Scale bar = 10µm
Species updated from Rhopalodia gibba ((Ehrenb.) O.Müll. 1895))
valves long, linear
dorsal margin undulates
apices deflect ventrally
transapical costae
presented in a girdle view
Photos / Sounds
What
Lemnicola hungaricaObserver
enviroethanDescription
Scale bar = 10 µm
valves: linear, linear-elliptic
central area bears assymetric stauros
distal raphe ends deflect in opposite directions
striae parallel
Photos / Sounds
What
Staurosira binodisObserver
enviroethanDescription
scale bar 10 μm
valve margin undulates
apices: rostarte
linear axial area
striae don't reach sternum
Photos / Sounds
What
Cocconeis placentulaObserver
enviroethanDescription
Scale bar = 10 µm
valves: elliptic, nearly flat
raphe simple
small central area
hyaline ringe near valve margin
uniseriate radial striae
center picture: rapheless valve
Photos / Sounds
What
Genus CymbellaObserver
enviroethanDescription
Scale bar = 10 µm
valves: dorsi-ventral, dorsal margin convex, ventral slightly concave
uniseriate striae visible in LM
raphe undulates, proximal ends deflect ventrally, distal ends deflect dorsally
multiply stigmata on central area
Photos / Sounds
What
Asterionella formosaObserver
enviroethanDescription
Scale bar = 10 µm
valves: linear, lanceolate, heteropolar
aplices: capitate
very narrow sternum
striae bearly visible in LM
Photos / Sounds
Observer
enviroethanDescription
Scale bar = 10 µm
small valves, concentrically undulated
radial spines
Photos / Sounds
What
Surirella librileObserver
enviroethanDescription
scale bar 10 μm
valves: linear with narrower center
transapical valve undulations
Photos / Sounds
Observer
enviroethanDescription
Scale bar = 10 µm
valves: dorsi-ventral, dorsal margin convexe, ventral concave with small center undulation
apices: subrostrate, deflected ventrally
striae: uniseriate, visible on LM
raphe: undulates, proximal ends deflect dorsally, terminal ends deflect ventrally
Photos / Sounds
What
Cymbella mexicanaObserver
enviroethanDescription
Scale bar = 10µm
Also shown on the right: Cymbella mexicana var. kamtschatica
valves: dorsi-ventral, dorsal margin strongly convex, central slightly convex in the center
uniseriate striae, visible in LM
raphe simple, distal ends deslect dorsally
stigmata on central area
