Dandelion

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JimT
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Dandelion

#1 Post by JimT » Wed Oct 11, 2017 10:32 pm

TS sections of a dandelion stem just above the root. Stem was ~ 3mm dia. And I am going to do this in two posts. All were staimed with red food dye.

The first photo is a four image panorama of the stem with the 4X to show the overall shape and structure of the stem.

Second image is with the 10X of a vascular bundle and the third image is with the 20X which shows detail of the phloem fibers, phloem, cambrium, and xylem.

Image

Image

Image
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mr micro
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Re: Dandelion

#2 Post by mr micro » Thu Oct 12, 2017 7:43 pm

great work , i took also some photos of the vascular bundles but with the parsley ( before i put it in salad 8-) ).
i will post them tomorrow.

thanks
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JimT
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Re: Dandelion

#3 Post by JimT » Fri Oct 13, 2017 6:04 pm

Thanks. Looking forward to your parsley.
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vasselle
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Re: Dandelion

#4 Post by vasselle » Sat Oct 14, 2017 4:55 pm

Bonjour
Très belles images
Merci pour le partage
Cordialement seb
Microscope Leitz Laborlux k
Boitier EOS 1200D + EOS 1100D
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zzffnn
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Re: Dandelion

#5 Post by zzffnn » Sat Oct 14, 2017 8:52 pm

Very nice, Jim! I especially like the first 4x photo.
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billporter1456
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Re: Dandelion

#6 Post by billporter1456 » Sun Oct 15, 2017 12:34 pm

Very nice!
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JimT
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Re: Dandelion

#7 Post by JimT » Sun Oct 15, 2017 4:38 pm

Thanks all.
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billben74
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Re: Dandelion

#8 Post by billben74 » Sun Oct 15, 2017 6:54 pm

Very nice section and images.
Also like the "big view" one.
Many thanks
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mrsonchus
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Re: Dandelion

#9 Post by mrsonchus » Mon Oct 16, 2017 10:48 am

Ahhhh - nice section Jim. I love the complete view! The red dye has really taken well and is differentiating nicely. An interesting view - the stection taken near the root is the oldest tissue - i.e. fully developed.

Interesting to see the absence of secondary growth and the 'use' of collenchyma to strengthen the stem rather than lignified fiber-bundles or strands. Makes sense considering the stem (bearing the capitulum and floret-head) will die-off rather than continue to offer support in subsequent years as the Dandelion retreats to it's base to overwinter.

Off to look at your version 2!

Thanks for a super post Jim. :)
John B
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