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Lonicera japonica [Japanese Honeysuckle]


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#1 msubees

    Zach Huang

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Posted 03 July 2014 - 16:05

Huang, Z.Y. (2014) Lonicera japonica Thunb (Caprifoliaceae) Japanese Honeysuckle. Flowers photographed in ultraviolet and visible light. http://www.ultraviol...icera-japonica/

Okemos, Michigan, USA
20 June, 2014
Cultivar in home garden

Other Common Names:


Comment:
Photographs taken in my front garden. Shot in my own garden. I was interested to see if the visual change of color (initially white, then turn to yellow with age) was accompanied with changes under UV. but I saw very little difference as shown by the four photographs here below. I have seen humming birds, bumble bees and honey bees foraging on this plant.

Reference:
http://en.wikipedia....nicera_japonica




Equipment
Camera: Panasonic Lumix DMC-G5-broadband + El Nikkor 80mm f/4.5].

Visible Light [f/8, ISO160, S8612 (1.75 mm thick), natural light]
1. two flowers, shutter speed: 1/30 sec
Attached Image: P1100369.JPG
2. many flowers, shutter speed: 1/40 sec
Attached Image: P1100371.JPG

UV showing similar reflectance for the two colors under visible light.
Ultraviolet [f/8, S8612 (1.75mm thick) + UG11 (1 mm thick), natural light]

3. a single pair, ISO 160, exposure 10 sec

Attached Image: P1100370.JPG

4. many flowers, ISO 400, exposure 3.2 sec.

Attached Image: P1100373.JPG

Edited by Andrea B., 15 March 2015 - 17:23.


#2 Andrea B.

    Desert Dancer

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Posted 06 July 2014 - 02:52

Zach, this is good work. And an interesting observation that the Visible yellow & white flowers show no difference in UV.
I like the 2nd UV photo which shows how the brighter open flowers stand out against the slightly darker leaves.

Please make this a formal post.
Andrea G. Blum
Often found hanging out with flowers & bees.

#3 JCDowdy

    JCDowdy

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Posted 06 July 2014 - 03:56

Ahh, nice one!
I went to shoot some Honeysuckles about a week and a half ago and they were all gone!
​They must bloom later in Michigan than Tennessee.
I would have expected different Vis colors to show at least some UV difference.


#4 msubees

    Zach Huang

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Posted 06 July 2014 - 18:07

Andrea,

thank you! will do. perhaps after I come back from a meeting in IL. (sunday next week).

The Tropaeolum seems to be the reverse: I found three different colors (red, pink, light pink) showing different UV reflectivity. I believe that family is still blank...i can do a formal post for that one also.

View PostAndrea B., on 06 July 2014 - 02:52, said:

Zach, this is good work. And an interesting observation that the Visible yellow & white flowers show no difference in UV.
I like the 2nd UV photo which shows how the brighter open flowers stand out against the slightly darker leaves.

Please make this a formal post.


#5 msubees

    Zach Huang

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Posted 06 July 2014 - 18:08

My wife has cultivated some in my front yard. they are still blooming. I believe they will for the most of the summer. Please feel free to come over :)

View PostJCDowdy, on 06 July 2014 - 03:56, said:

Ahh, nice one!
I went to shoot some Honeysuckles about a week and a half ago and they were all gone!
​They must bloom later in Michigan than Tennessee.
I would have expected different Vis colors to show at least some UV difference.