המועדפים של laneallen
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laneallenתיאור
Scale Bar = 10 microns.
This specimen was collected from the bottom layer of a volcanic ash deposited approximately 11.8 million years ago. This specimen had secondary costae and a costae density of 3 per 10 microns. Valves are elliptical nearly circular. This specimen was identified using Schmidt's Plates and the Hustedt Collection which was collected from a deposit of approximately the same time frame in Oregon. The specimens did not correspond well to the dimensions published in Williams 1996; however, his dimensions did not match the figures published in the same paper. This form is distinguished by its diminutive size and nearly circular valves.
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diatomwuתיאור
Composite epiphytic and epilithic sample from the edge of the Trinity River.
Length: 116 um, Breadth: 35 um.
Characteristics: 3 inflations in larger specimens, a single rimoportula, and transapical bars that look like music notes in girdle view.
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closterium_mysteriumתיאור
A water sample was collected from the shore of Srednerogatsky Pond. The air temperature was 14°C (57.2 °F). The sample was kept at room temperature until it was assayed 7 days later.
Video: https://youtu.be/9ONVEXDLuEE
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mnold1תיאור
Mag. 400x
Proportions: 100µ x 22µ; 8-9 striae per 10µ at the center. The size and unique shape of this Pinnularia put it within the range reported for Pinnularia undula var, major as seen here https://diatoms.org/species/pinnularia-undula-var-major. (It is larger than visually-related P. undula). This species is currently not in the iNat database. The second image captures a transition from girdle view to valve view.
- A water sample was taken on 5/8/2023, from the shore of Lantern Hill Pond, using a 10µ dip net to enrich for microbes. Air temp. 73°F.
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חייםמתצפת.ת
juanloredoתיאור
Water sample collected from the river San Pedro, Rosales, Chihuahua, at the indicated location.
The samples was collected on January 13th and images were acquired next day.
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woodilljתיאור
- from marine sample (sand and water), collected at shoreline
- objective(s) (x 10): images 1-9, 1000x; image 10, 600x
- approximate dimensions: see image 11
- ID: ELPB-LGT40
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laneallenתיאור
Scale Bars = 10µm.
First image is of the iridescence produced by this taxon under total extinction DIC.
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mnold1תיאור
Mag. 400x
Freshwater, asymmetric diatom. The 3 photos in image 1 depict a small rotation around its longitudinal axis. Based on its uniquely large size (180µ L x 50µ W), apiculate and capitate apices, striae count per 10µ (7 at the valve center and 9 near the apices), this specimen (to my eyes) looks like Cymbopleura inequalis. For more information and reference photos see https://diatoms.org/species/cymbopleura_inaequalis and https://www.algaebase.org/search/species/detail/?species_id=q6409a9e46e8376c6.
- A water sample was taken on 11/08/2022, from the shore of Lantern Hill Pond, using a 10µ dip net to enrich for microbes. Air temp. 55°F.
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cygnetureתיאור
Images 1-7
- Algae sampled just below pontoon water line.
- Filament structure.
- Filament structure.
- Cell structure.
- Filaments structure.
- Cell structure.
- Matted strands forming tufts.
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כוכבי ים (מחלקה Asteroidea)מתצפת.ת
laneallenתיאור
Scale Bar = 500µm.
Photos are courtesy of Jeffery Stone who let me pilot his SEM briefly yesterday. I am not sure where the population was originally from but this is a starfish that was in the Indiana State University marine aquarium.
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aliendiatomתיאור
Mastogloia belaensis. Biscayne Bay Coastal Wetlands. Collected on flocculent plant material.
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pierrenoelתיאור
Légende
A. Vue générale
B->H. Filaments stériles & cytologie
I->V. Auxospores
W-X. Lavoir / Wash-house.
Même place & habitat que https://www.inaturalist.org/observations/105116866
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מה
צורניות (מחלקה Bacillariophyceae)מתצפת.ת
laneallenתיאור
All specimens from the Colorado Front Range.
Scale Bar = 10 µm.
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מה
סוג Neidiumמתצפת.ת
laneallenתיאור
NOT N. bisulcatum, except maybe the first 3. N. bisulcatum sensu strictu has a width range of 8-9 microns. The majority of the specimens here are a similar taxon that has been erroneously lumped into the species concept of N. bisulcatum by many authors over the course of the last century.
Scale bar = 10 µm.
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laneallenתיאור
Found alive and well in a culture in our incubator neglected since the onset of the pandemic. Interestingly enough, some cultures contained dead tardigrades and live rotifers. Source material was antarctic algal mats. Photo taken using darkfield.
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plingfactoryתיאור
found as epibionts on a copepod.
More on this here:
http://www.plingfactory.de/Science/Atlas/KennkartenProtista/01e-protista/e-Ciliata/e-source/Trichodina%20domerguei%20megamicronuleata.html
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laneallenתיאור
Found in an alpine rock pool. photos taken at 400x total magnification. Another type of colonial motile green algae. It appears to be morphologically distinct from the other taxa I documented here. I have a photo of the two taxa next to each other if anyone is interested.
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laneallenתיאור
Found in an alpine rock pool. photos taken at 400x total magnification. This was a motile colonial organism not unlike Eudorina or Pandorina.
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מה
סוג Phacotusמתצפת.ת
laneallenתיאור
Featureless transparent disks under PPL, but black interference crosses which maintain their orientation when the stage is spun appear under cross polarized light. The interference crosses may separate in some (typically larger) loricae forming patterns like the stitches on a baseball as the stage is rotated.
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laneallenתיאור
Scale Bar = 5 µm
Hard to say, but I suspect this is C. atomus in girdle view.
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laneallenתיאור
Taken at 400x and cropped to fit the one cell. Pardon the lack of a scale bar, this is just a fun one I wanted to share.
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laneallenתיאור
Scale Bar = 10 µm
H. triquetra is limited to tropical saline waters.
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laneallenתיאור
Scale Bar = 10 µm.
This was the only specimen of this species present. It was a bit on the small side at only 62 µm in diameter. Note the 2 ocelli and rimoportulae.
Sample was collected from a knothole in a tree.
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laneallenתיאור
Scale Bar = 10 µm
This is a really fun one. This genus is known to frequent aerial habitats such as cave walls. This population was found in a small knothole full of water. I suspect this is NOT O. roeseana, this population is smaller than published dimensions. The diameter ranged from 13.6 - 24.7 µm. I have seen this species in another knothole.
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מה
צורניות (מחלקה Bacillariophyceae)מתצפת.ת
laneallenתיאור
Just a fun collection of diatoms present in my family's farm pond. This plate represents less than a quarter of the taxa present. If you have questions about any of the specimens feel free to ask. All are to scale, and the scale bar = 10 micrometers.
