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Philpatrick

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  1. I really like the third image. It gives me ideas for a potluck. I'm thinking butter, sour cream, chopped green onions and bacon pieces would be good as toppings for that nice looking tater. I am glad you shared this. Amazing post!
  2. This is what two fresh pollen grains looked like under reflected light before staining and treatment.
  3. I had to recheck, restain and reimage a pollen sample to find that the pollen features were consistent. In the last image I think it is interesting because this pollen looks like the exine has a croton pattern, you can see the raised croton pattern especially in the last image from the set above. It looks like interconnected rings with 5/6 triangular columns on the muri. The raised areas on the exine appear darker in color. The muri is the raised area forming the reticulated pattern, the columns on the muri form the croton pattern. The lumina are the spaces between the muri. The brochus, is a lumen ( singular of lumina ) including half the width of the muri. To measure a brochus ( singular of brochi ), measure a lumen including half the width of the muri; halfway into the muri surrounding the lumen. The measurement of that space, the brochus, could be useful to know. The pollen has an exine pattern that closely resembles a croton pattern, but it could be another type of exine patterning. More resolved images will help identify this. Hydrated, stained, transmitted light brightfield.
  4. Widefield fluorescence micrograph of hydrated Squamellaria pollen. The pollen above was collected from a plant identified as Squamellaria. It has been stained to distinguish features. The linear aperture, the colpus (colpi plural), emits a yellow color on the pollen circumference. The red color is the exine. Dry Squamellaria pollen imaged with reflected light. In the autofluorescence image above the pollen is fresh and has not been stained. The pollen appears to be tricolpate, meaning there are three colpi. The cross section of the pollen in the polar orientation shows the three colpi simultaneously (blue arrows). The colpi are the three furrows in the circumference of the pollen wall. Stained pollen surface detail. I am working on more detailed images.
  5. Echinate spore of Microgramma bismarckii under incident darkfield illumination.
  6. What type of lighting does this plant receive? What is the measured humidity in the plants growing environment? https://www.google.com/url?sa=t&source=web&rct=j&url=https://plantpathology.ca.uky.edu/files/ppfs-or-h-05.pdf&ved=2ahUKEwiXofPembDlAhW1Ln0KHWTTD0MQFjAHegQICRAB&usg=AOvVaw20KcWIT3EFgTShKlOdJJUY I have had plants with blister like growths on the leaves; not so much on the petioles like your plant is showing. A lab could test your plant to ensure it isn't a pathogen. Could it be a pathogen, the nature of the plant, or caused by adverse growing conditions? It could be oedema. You could quarantine the plant until a solid diagnosis is confirmed.
  7. According to this link, not all Squamellaria utilize the same metabolic pathway. https://journals.plos.org/plosone/article/figure?id=10.1371/journal.pone.0151317.t001
  8. Occurrence records for Myrmecodia beccarii: https://biocache.ala.org.au/occurrences/search?taxa=Myrmecodia+beccarii&q=&fq=&wkt=&lat=&lon=&radius=&offset=20&max=20
  9. The link above is not working: Error: unknown No record found with id: 151fcb20-a39b-4cba-b8a8-ccf03066bf33
  10. The seeds from the fruit germinated and are developing nicely. The seedlings have large cavities compared to their size. At first there is not an opening and the hypocotyl is smooth. The thin surface of the caudex, where the opening is forming underneath, sheds away to reveal a cavity at their base.
  11. Thank you. The drops are about a millimeter across, very noticeable by the way they refract light, and more frequent on fronds with sori. As a test, some ants were placed on a frond and they consumed the drops, with some of the meal leftover adhering to them. That plant would be very interesting to see. The informative Neotropical blueberry article has great images with amazing color.
  12. According to a phylogenetic tree of plants with extrafloral nectaries (foliar nectaries for non flowering plants); there are several ferns in the polypodaceae family with foliar nectaries. I rechecked the L. curtisii again and it does have some drops forming. The location of the drops matches the location of the nectaries of several other polypod ferns. Also in another article: "Bracken nectaries are present and active on both young and mature fronds, whereas Polypodium nectaries are active only on the young fronds." (American Journal of Botany 85(5): 736–739. 1998.). This link has interesting information on fern nectaries: https://www.botany.one/2014/07/sweet-nectar-gives-ferns-bitter-taste/
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