Geranium robertianum (Herb Robert) "hair"

Charles Krebs · Post by **Charles Krebs** » Thu Nov 26, 2015 1:48 pm

This plant is frequently described as "hairy", and I decided to look at single "hairs". I found them very simple and graceful. I was playing around with some lighting arrangements for the MM-11 setup so I photographed in three ways... darkfield, circular oblique, and brightfield.

Olympus 20/0.40 LMPLFLN, darkfield

Olympus 20/0.40 LMPLFLN, circular-oblique

Olympus 20/0.40 LMPLFLN, brightfield

Olympus 50/0.50 LMPLFLN, brightfield

Jacek · Post by **Jacek** » Thu Nov 26, 2015 1:51 pm

gret photos

JH · Post by JH » Thu Nov 26, 2015 2:00 pm

Nice! Interesting comparission.
Regards Jörgen

ChrisR · Post by **ChrisR** » Thu Nov 26, 2015 4:10 pm

Any idea what the red end does? (It looks almost like a sundew!)

So, your MM has acquired a DF condenser. Is it "just" the base of a random microscope, carefully aligned with the fixed axis? That's something I imagine for mine - currently a pile of pieces. Is there anything about the unusual setup which favors a particular base?

carlos.uruguay · Post by **carlos.uruguay** » Thu Nov 26, 2015 9:16 pm

Very very nice!

fpelectronica · Post by **fpelectronica** » Fri Nov 27, 2015 11:07 am

Sumguy01 · Post by **Sumguy01** » Sat Nov 28, 2015 3:01 pm

A really great set.
Very interesting.
Thanks for sharing

Marek Mis · Post by **Marek Mis** » Sun Nov 29, 2015 12:17 am

Interesting subject and perfectly photographed. These three small trichomes in the first image make it much more interesting and nicely supplement whole composition.

Marek

piermicro · Post by **piermicro** » Sun Nov 29, 2015 3:56 am

Very nice us usual.

RogelioMoreno · Post by **RogelioMoreno** » Sun Nov 29, 2015 9:40 am

Beautiful set, my favorite is #1.

Rogelio

Charles Krebs · Post by **Charles Krebs** » Sun Nov 29, 2015 8:00 pm

ChrisR,

So, your MM has acquired a DF condenser. Is it "just" the base of a random microscope, carefully aligned with the fixed axis?

When I get back to the microscopes I'll take a shot of what I used for all three... but you will probably laugh, very low-tech!

BJ · Post by BJ » Mon Nov 30, 2015 8:09 am

Hi,

in reply to ChrisR,

Charles has imaged (brilliantly as usual) a type III trichome (hair) which has five cells in the stalk. The pigmented cell contains and secretes flavonoids.

See here:

http://onlinelibrary.wiley.com/doi/10.1 ... x/abstract

Unfortunately, I do not have access to the full article.

regards to all and thank you to Charles for posting,
brian