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A couple of UVIVF flowers

Fluorescence
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#1 Øivind Tøien

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Posted 14 July 2019 - 06:35

My botanic knowledge i too rusty to try specify these. The first one looks somewhat familiar to me, here a specimen in natural light where it was growing wildly on the side of the salad bed in the garden I was looking after:

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Then indoor VIS, with light from a Niterider Lumina 900 Boost LED bike light. I am not sure why it looks more yellow here. It is likely not the same specimen, but picked at the same location:

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UVIVF

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VIS again
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UVIVF:
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Second plant was a domestic one growing in a flower bed, Here indoor VIS with the bike light, pretty heavy crop:

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UVIVF:

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The first one with D500 and Nikon AFS 300 mm f/4 PF, all the rest D500 with 105mm f/4 AIS @ f/8-f/10 with a Nikon L39 UV filter. All UVIVF 8s exposures lighted by Convoy S2+ 365nm and Tank 007, both lights with what is likely ZBW2 filters on the front. Shot with daylight WB and warmed to 8000-1000K in CNX-D in post to dampen the blue cast.
Øivind

#2 nfoto

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Posted 14 July 2019 - 14:55

The first one is Eruca sativa. Or some Raphanistrum, but E. sativa seems more likely.

The second something in the Lobelia genus.

#3 Øivind Tøien

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Posted 14 July 2019 - 22:12

Thanks for pointing me in the right direction, Birna. After looking them up on the wiki, I think the images I see for your second choice Raphanus raphanistrum looks most similar? (https://en.wikipedia...Wild_Radish.jpg )The ones for Eruca sativa seem to have some spines (https://en.wikipedia...uary_2008-1.jpg ) that do not show in my image, and the shape of the petals and patterns seem more like.

Edited by Øivind Tøien, 14 July 2019 - 22:14.

Øivind

#4 nfoto

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Posted 14 July 2019 - 22:45

I still think E. sativa is the answer. However, foliage and fruits (siliqua) usually are required for identification of Cruciferae as the flowers themselves rarely suffice.

#5 Øivind Tøien

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Posted 15 July 2019 - 08:20

Here is an image from slightly longer distance, but unfortunately not including any foliage.

Posted Image
Øivind

#6 Andy Perrin

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Posted 15 July 2019 - 16:50

No foliage may be bad for ID, but it made this a pretty shot.

#7 Øivind Tøien

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Posted 16 July 2019 - 10:29

Thanks, Andy. that was certainly my motivation. But I will keep in mind to get some captures just for identification in the future.

I showed the images to a biology colleague and seasoned botanist who is visiting here now (faculty member long time ago) without mentioning the candidates pointed out here, and his response was: "That was Raphanus sp., radish or wild radish. Weed or crop? (Mustard family)." He got quite interested in the UVIVF image I included and I pointed him to this site.
Øivind

#8 Andrea B.

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Posted 23 July 2019 - 18:16

I would have also said Raphanus because arugula/Eruca flowers tend to bunch up. But one stalk is not enough to be sure. And I haven't seen all that many Eruca plants in bloom. The Eruca seed pod does not have constrictions between the seeds like the radish/Raphinistrum seed pod.

If the plant grew from a stray cultivar seed from the nearby garden bed, then it could be either or something else. Cultivars can drift from the wild flower.

The UVIVF are so lovely!
Andrea G. Blum
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#9 Øivind Tøien

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Posted 24 July 2019 - 11:05

Thanks for the comment, Andrea. Sure UVIVF is lovely both in its expression and relative simplicity.
Øivind