Another visible-red UV-yellow flower

[Stefano]

Not long ago I discovered that there are red flowers which appear false yellow in UV. Before that I thought only yellow flowers could be UV-yellow.

 

Today I found another example. It is likely that this flower has already been covered in the botanical section, but I don't know its name.

 

Visible references, taken with a Samsung Galaxy A40:

 

f/1.7, ISO 50, 1/100 s exposure

 

f/1.7, ISO 64, 1/100 s exposure

 

UV, with a full-spectrum Canon EOS M, Soligor 35 mm f/3.5 and Chinese BG39 (2 mm) + ZWB2 (2 mm):

 

f/4, ISO 100, 2 s exposure

 

f/8, ISO 100, 30 s exposure

 

The yellow is not as intense as a dandelion, but it still shows up nicely. Also, there is some lavender inside, so this flower has two UV colors in it.

[colinbm]

Good captures Stefano

[Stefano]

Thanks. I'm sure there are a lot of red flowers like this in Oz, now that you have a nice camera system you can find them.

[colinbm]

Yes I will have to do some scouting around, perhaps a local plant nursery, at least they should have some labels on them, because I won't have a clue..... ;-)

[Andy Perrin]

Very interesting. Nice flower!

[Stefano]

Thanks Andy. I'm sure Birna or someone else will identify it. I actually though about posting this topic in the ID section, but this was not the main point.

[nfoto]

Anagallis arvensis, Primulaceae. The flowers are usually pale reddish, but there is a form with azure blue corolla.

[Stefano]

Thanks Birna.

[nfoto]

See https://www.ultravioletphotography.com/content/index.php/topic/77-anagallis-arvensis-scarlet-pimpernel/

[Stefano]

I was sure this flower was already present in the botanical section, I don’t commonly see it but should be quite common overall.

[Cadmium]

Stefano, Quite interesting, a red flower being yellow in UV. I've never seen that before.

[Stefano]

This example is even better: https://www.ultravioletphotography.com/content/index.php/topic/2245-papaver-rhoeas-common-poppy

[Andrea B.]

Before that I thought only yellow flowers could be UV-yellow.

 

Then there is the flower with yellow tips which become false blue in UV. See Zinnia bicolor.

And here is a yellow flower with a blue bull's-eye. Arrowleaf Balsamroot.

I used to think that yellow couldn't become false blue in UV.

[Stefano]

Wow, I didn't know that either! That is surely uncommon. We can always have surprises in UV and IR.

[Andy Perrin]

Golden chain tree also!

https://www.ultravioletphotography.com/content/index.php/topic/2258-golden-chain-tree/