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UltravioletPhotography

Geranium robertianum [Herb Robert]: Another Example


Andrea B.

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Blum, A.G. (2015) Another Example of Geranium robertianum L. (Geraniaceae) Herb Robert. Flowers photographed in ultraviolet, visible and infrared light. http://www.ultraviol...nother-example/

 

Synonyms:

  • Dove's Foot
  • Mountain Crane's-bill
  • Stinky Bob
  • Storksbill
  • Robertiella robertiana (L.) Hanks

Comment: Rørslett (2012) first showed a European G. robertianum in ultraviolet(1). Here is a North American example found in coastal New Jersey which exhibits a similar UV signature. The plant is native to both Europe and N. America and other regions of the world.

 

Reference:

1. Rørslett, B. (2012) Geranium robertianum L. (Geraniaceae) Herb Robert. Flowers photographed in visible and ultraviolet light. http://www.ultraviol...um-herb-robert/

2. New England Wild Flower Society (2015) Geranium robertianum L. Herb-robert. Mountain Crane's-bill. https://gobotany.new...um/robertianum/

 

SET 1

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

14, 19, 24 April 2010

Wildflower

 

Comment: This particular specimen is a bit of an oddity with six petals. Another flower showed 7 petals. In all other respects the plant satisfied the characteristics of G. robertianum. Set 2 below contains an example of the normal 5-petaled flower.

 

Equipment [Nikon D200-broadband + Novoflex 35mm f/3.5 Noflexar]

 

Visible Light [f/11 for 1/250" @ ISO-400 in Sunlight with Baader UVIR-Block Filter]

The hardy Herb Robert makes a home in a tangle of plants and WWII ruins at Sandy Hook.

geraniumRobertianumHabitatVis042410sandyHookNJ_40420origpn.jpg

 

Visible Light [f/11 for 1/350" @ ISO-400 in Sunlight with Baader UVIR-Block Filter]

The shallow-rooted Herb Robert is happy growing in a wall crevice.

geraniumRobertianumInWallVis042410sandyHookNJ_40422origpn.jpg

 

Ultraviolet Light [f/11 for 1/1.5" @ ISO-400 in Sunlight with Baader UV-Pass Filter]

Herb Robert's foliage is dark in UV.

geraniumRobertianumInWallUV042410sandyHookNJ_40428pfpn.jpg

 

Visible Light [f/11 for 1/350" @ ISO-500 in Sunlight with Baader UVIR-Block Filter]

Herb Robert has complex deeply-lobed leaves.

geraniumRobertianumLeafVis041410sHookNJ_38377origpn.jpg

 

Visible Light [f/11 for 1/125" @ ISO-500 in Sunlight with Baader UVIR-Block Filter]

geraniumRobertianumVis041910sHookNJ_39681pf2.jpg

 

Ultraviolet Light [f/11 for 1/3" @ ISO-500 with Nichia 365nm UV-LED and Baader UV-Pass Filter]

geraniumRobertianumUV041910sHookNJ_39697pf.jpg

 

Infrared Light [f/11 for 1/250" @ ISO-500 with onboard Flash and B+W 092 IR-Pass Filter]

geraniumRobertianum092IRFlash041910sHookNJ_39706pf.jpg

 

Visible Light [f/11 for 1/350" @ ISO-500 in Sunlight with Baader UVIR-Block Filter]

Here is a 7-petaled version of Herb Robert.

geraniumRobertianumVis041410sHookNJ_38360pf.jpg

 

SET 2

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