Jump to content
UltravioletPhotography

Potentilla recta [Sulphur Cinquefoil]: More Examples


Andrea B.

Recommended Posts

Blum, A.G. (2014, 2017) More Examples of Potentilla recta L. (Rosaceae) Sulphur Cinquefoil. Flowers photographed in ultraviolet, visible, infrared and UV+B+G light. http://www.ultraviol...-more-examples/

 

Synonyms:

  • Rough-fruited Cinquefoil

Comment:

Rørslett (2014) first showed Potentilla recta in ultraviolet(1). Here are more examples found in the USA which exhibit some differences in UV signature with a smaller UV-dark blotch on the petals. The visible flower here is usually a paler yellow than the European version.

 

Reference:

1. Rørslett, B. (2014) Potentilla recta L. (Rosaceae) Sulphur Cinquefoil. Flowers photographed in visible and ultraviolet light. http://www.ultraviol...phur-cinquefoil

2. New England Wild Flower Society (2014) Potentilla recta. Sulphur Cinquefoil. https://gobotany.new...tentilla/recta/

3. Natural Resources Conservation Service (2014) Potentilla recta Plant Profile. US Department of Agriculture. http://plants.usda.g...le?symbol=PORE5

 

Set 1

Gateway National Recreation Area, Sandy Hook Unit, New Jersey, USA

Boy Scount Camp

29 May 2008

Wildflower

 

Equipment [Nikon D200-broadband + Nikon 105mm f/4.5 UV-Nikkor]

 

Visible Light [f/11 for 1/750" @ ISO 400 in Sunlight with Baader UVIR-Block Filter]

One petal is missing from the flower in these photographs.

potentillaRectaVis052908sandyHookNJ_21737orig012pn.jpg

 

Ultraviolet Light [f/11 for 1" @ ISO 400 in Sunlight with Baader UV-Pass Filter]

potentillaRectaUV052908sandyHookNJ_21740orig054pn01.jpg

 

Set 2

Gateway National Recreation Area, Sandy Hook Unit, New Jersey, USA

Boy Scount Camp

01 June 2008

Wildflower

 

Equipment [Nikon D200-broadband + Nikon 105mm f/4.5 UV-Nikkor]

 

Visible Light [f/11 for 1/180" @ ISO 400 in Sunlight with Baader UVIR-Block Filter]

potentillaRectaVis060108sandyHookNJ_22313proof01.jpg

 

Ultraviolet Light [f/11 for 1.5" @ ISO 400 in Sunlight with Baader UV-Pass Filter]

potentillaRectaUV060108sandyHookNJ_22315proof01pn.jpg

 

Set 3

Gateway National Recreation Area, Sandy Hook Unit, New Jersey, USA

03-05 June 2010

Wildflower

 

Equipment [Nikon D700-broadband + Novoflex 35mm f/3.5 Noflexar]

 

Visible Light [f/6.3 for 1/400" @ ISO 450 using Nikon D3]

A small fly enjoys the Suphur Cinquefoil.

potentillaRectaWithSmallFlyVis060310sandyHookNJ_37627proof.jpg

 

Visible Light [f/6.3 for 1/400" @ ISO 1100 using Nikon D3 + Nikon 60mm f/2.8G Micro-Nikkor]

P. recta shows an upright habit.

potentillaRectaHabitatVis060310sandyHookNJ_37628origPf.jpg

 

Visible Light [f/6.3 for 1/400" @ ISO 1790 using Nikon D3 + Nikon 60mm f/2.8G Micro-Nikkor]

The palmate leaf of P. recta. Most have 7 leaflets.

potentillaRectaLeafVis060310sandyHookNJ_37623origpn.jpg

 

Ultraviolet Light [f/8 for 1" @ ISO 200 with Nichia 365nm UV-LED and Baader UV-Pass Filter]

potentillaRecta365UV060510sandyHookNJ_783proofRes.jpg

 

UV-Induced Visible Fluorescence [f/8 for 1/2" @ ISO 200. Nichia 365 UV-Led + Baader UV-Pass Filter. Lens + Baader UVIR-Block Filter. Photographed in Darkness.]

Note: This photo has not been formally colour-calibrated, so the colours of the fluorescence may not be entirely accurate.

The pollen is fluorescent on the edge of the anthers.

potentillaRecta365UVIndVisFluor060510sandyHookNJ_809origPf.jpg

 

Set 4

Gateway National Recreation Area, Sandy Hook Unit, New Jersey, USA

09 June 2010

Wildflower

 

Equipment [Nikon D700-broadband + Carl Zeiss 60mm f/4.0 UV-Planar]

 

Visible Light [f/11 for 1/50" @ ISO 650 with onboard Flash and Baader UVIR-Block Filter]

potentillaRectaVisFlash060910sandyHookNJ_1724origpn.jpg

 

Infrared Light [f/11 for 1/50" @ ISO 640 with onboard Flash and B+W 092 IR-Pass Filter]

potentillaRecta092IRFlash060910sandyHookNJ_1727origPf.jpg

 

 

Set 5

Shore Cottage, Southwest Harbor, Maine, USA

06 July 2016

Wildflower

 

Equipment [Nikon D600-broadband + Nikon 105mm f/4.5 UV-Nikkor]

unless otherwise noted

 

Visible Light [f/11 for 1/200" @ ISO-200 with Onboard Flash and Baader UVIR-Block Filter]

potentillaRecta_visFlash_20160706shoreCottageSwhME_47083v3.jpg

 

Ultraviolet Light [f/11 for 1/15" @ ISO-400 with SB-14 UV-modified Flash and BaaderU UV-Pass Filter]

potentillaRecta_uvBaadSb14_20160706shoreCottageSwhME_47093pn0101.jpg

 

Ultraviolet Light [f/11 for 1/2,5" @ ISO-800 with SB-14 UV-modified Flash and AndreaU UV-Pass Filter]

Best viewed when clicked up to 1000pixel width in an exanded browser.

potentillaRecta_uvAndreaSb14_20160706shoreCottageSwhME_47115Final01.jpg

 

Infrared Light [f/11 for 1/160" @ ISO-400 in Sunlight with B+W 093 IR-Pass Filter]

potentillaRecta_ir093Sun_20160706shoreCottageSwhME_47146pn01.jpg

 

UV+Blue+Green [f/8 for 1/6" @ ISO-500 in Sunlight with UG5(1.5mm) + S8612(1.75mm)]

600_3460pn01.jpg

 

Leaf Details

Visible Light [f/8 for 1/400" @ ISO-250 with Nikon D800 + 60mm f/2.8G Micro-Nikkor in Sunlight]

potentillaRectaLeaf_visSun_20160706shoreCottageSwhME_10658crop.jpg

 

Visible Light [f/8 for 1/400" @ ISO-400 with Nikon D800 + 60mm f/2.8G Micro-Nikkor in Sunlight]

potentillaRectaLeaf_visSun_20160706shoreCottageSwhME_10659crop.jpg

Link to comment

Is the identification of this specimen verified? It looks quite dissimilar to the Potentilla recta plants I have seen from various European locations. These tend to have deep yellow flowers and all share the similar habitus with a stout upright stem and spreading terminal inflorescence, making the species easily identifiable in the field.

 

It is noteworthy that the UV signature is different as well from those obtained from European material.

Link to comment

What is identified as Sulphur Cinquefoil here in the US has a paler yellow flower.

I was just about to post a 3rd set showing a leaf and a group of plants.

 

I will of course consult the various keys and field guides to verify my ID.

 

We have encountered this kind of difference before between the same species separated by an ocean.

Link to comment
Potentilla is quite variable in its UV signature? I have seen a small, yellow one and totally dark under UV. Another pink one was also almost black in UV.
Link to comment

There seem to be two types of Potentilla UV-signature posted on UVP so far.

 

One type has UV-dark blotches on the petal end next to the flower center. The size of the black blotches may vary.

 

The other type is uniformly UV-dark or moderately so. We have 2 of those:

Potentilla atrosanguinea [blood Cinquefoil] and Potentilla crantzii [Alpine Cinquefoil]

 

Let's see some more Potentilla if you have them !! :(

Link to comment
I do not know their species, but will post somewhere soon. One is a nice pink and similar to the red one here under UV.
Link to comment
  • 11 months later...
I thought my pink species (or perhaps the yellow one also) was P. fruticosa. I photoed some white and some yellow yesterday, the white one is uv dark, but not black, and the yellow is much darker. It seems to a different cultivar of the same species.
Link to comment
Potentilla fruticosa, now to be designated Dasiphora fruticosa, belongs to the yellow flowers that register UV dark all over. It has a development of conical cells though, so depending on the incoming illumination, the petals can display a lot of iridescence.
Link to comment

I have seen three color variations of D. fruticosa, pink, yellow, and white. they are black, black and deep blue under UV, respectively.

 

Potentilla fruticosa, now to be designated Dasiphora fruticosa, belongs to the yellow flowers that register UV dark all over. It has a development of conical cells though, so depending on the incoming illumination, the petals can display a lot of iridescence.

Link to comment
  • 1 year later...

Please sign in to comment

You will be able to leave a comment after signing in



Sign In Now
×
×
  • Create New...