Spores, pollen, wonder and more
Apr 22, 2021 • 12:23 PM UTC
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Diya A
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This is a documentation of two intended samples and one hitch-hiked sample, all very different from each other yet peacefully inhabiting the same square foot habitat. Plus one bonus sample at the end!
When I first learnt about fern spores, I was intrigued by how an entire plant grew out of a microscopic grain, and not a macroscopic seed. I went to ask a neighbour for a fern leaf to try and discern the spores, but the variety she had was “spore-less”. A year or two later I came across the word “sporange” (the only word that rhymes with “orange”), a shortened version of “sporangium”.
Yesterday I chanced upon a few ferns, and it kindled my curiosity. When I observed the leaf, I saw green semicircular structures on its underside, and brown powdery grains on the curved part, which I assumed to be the sporangia and spores respectively.
When I first learnt about fern spores, I was intrigued by how an entire plant grew out of a microscopic grain, and not a macroscopic seed. I went to ask a neighbour for a fern leaf to try and discern the spores, but the variety she had was “spore-less”. A year or two later I came across the word “sporange” (the only word that rhymes with “orange”), a shortened version of “sporangium”.
Yesterday I chanced upon a few ferns, and it kindled my curiosity. When I observed the leaf, I saw green semicircular structures on its underside, and brown powdery grains on the curved part, which I assumed to be the sporangia and spores respectively.
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Underside of fern leaf under 20x magnification
But under the Foldscope, I observed the “spores” bursting open, and releasing tinier “sporettes”! So I did a bit of research, and found out that the semicircular structures weren’t sporangia, but sori (singular sorus), and the brown powder grains were sporangia. The “sporettes” were actually the spores.
Here is a time-lapse, though the process was quite fast and I should have taken a regular video instead.
But under the Foldscope, I observed the “spores” bursting open, and releasing tinier “sporettes”! So I did a bit of research, and found out that the semicircular structures weren’t sporangia, but sori (singular sorus), and the brown powder grains were sporangia. The “sporettes” were actually the spores.
Here is a time-lapse, though the process was quite fast and I should have taken a regular video instead.
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Sporangia releasing spores
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Some sporangia were empty and didn’t burst
Then I observed an entire sorus. Here are different parts in focus; I tried image stitching, but it really didn’t work out for this one.
The green part of the sorus looks like it is made of immature green sporangia
The second sample is a beautiful white bougainvillea flower that had fallen under the fern.
The second sample is a beautiful white bougainvillea flower that had fallen under the fern.
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I observed a bract first, but it wasn’t anything unique. Next was the bright yellow pollen, hiding inside the stem of the little white flowers.
I’ve never seen anything like these pollen grains! They were extremely tiny. And they looked just like yellow RBCs, with a characteristic biconcave shape!
I’ve never seen anything like these pollen grains! They were extremely tiny. And they looked just like yellow RBCs, with a characteristic biconcave shape!
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Perhaps the biconcave shape maximizes surface area – but why?
The next sample was a very small insect that rode along with the leaf and flower. It was glinting black to the unaided eye, but brown and translucent under magnification!
Here are photos of the bug from top to bottom in focus.
The next sample was a very small insect that rode along with the leaf and flower. It was glinting black to the unaided eye, but brown and translucent under magnification!
Here are photos of the bug from top to bottom in focus.
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Could that little red thing between its eyes be its brain?
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I tried not to, but (eek!) the poor little thing got squished
Does anyone know what insect this could be?
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My first go at focus stacking and image stitching
The last sample was totally unexpected! I was reviewing and deleting the photos I took, when my mom swatted a mosquito above my head. Into the Foldscope it went.
Here are some pictures of the wings. They turned out quite clear even with a good bit of digital zoom.
The last sample was totally unexpected! I was reviewing and deleting the photos I took, when my mom swatted a mosquito above my head. Into the Foldscope it went.
Here are some pictures of the wings. They turned out quite clear even with a good bit of digital zoom.
Then I came to the proboscis; the part which the mosquito uses to feed on blood.
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There is a smaller tube inside the main proboscis, which it uses to inject saliva that numbs your skin. Then it sucks blood through the larger tube.
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CookerBird #EarthDay
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