Tiny and translucent cells can be seen, which indicates for the presence of pollen on the sample stage under the view of the foldscope as shown in figure 1.
Figure 1 was taken on May 10th at 10:39 PM at Bechtel Residence lawn. The sample was obtained by picking one of the yellow flowers on the stalk. The anther was taken out of the flower and was then squished on a glass sample stage to release the pollen. Afterwards, a drop of water was added onto the pollen. A plastic square sheet was then placed on top of the pollen and water droplet for view under the foldscope.
The plant species for that pollen: Kniphofia uvaria
Other relevant information
Genus: Kniphofia
Family: Asphodelaceae
Order: Asparagales
Clade: Angiosperms (monocots)
Kingdom: Plantae
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