Andrea B. Posted May 23, 2015 Share Posted May 23, 2015 Blum, A.G. (2015) Another Example of Oxalis stricta L. (Oxalidaceae) Yellow Wood Sorrel. Flowers photographed in ultraviolet and visible light. https://www.ultravioletphotography.com/content/index.php/topic/1381-oxalis-stricta-yellow-wood-sorrel-another-example/ Middletown, New Jersey, USA14 May 2014Wildflower Synonyms:SourgrassSour PickleCommon Yellow OxalisOxalis europaea Jord.Oxalis fontana BungeComment:Rørslett (2015) first showed a Norwegian Oxalis stricta in ultraviolet(1). Here is a US example which also exhibits a similar false-yellow with darker striping in UV.The seedpods of O. stricta are explosively dehiscent and can cause quite a commotion if too many plants are left unweeded in the home garden. Reference:1. Rørslett, B. (2015) Oxalis stricta L. (Oxalidaceae) Yellow Wood Sorrel. Flowers photographed in visible and ultraviolet light. LINK Equipment [Nikon D600-broadband + Carl Zeiss 60mm f/4.0 UV-Planar] Visible Light [f/4 for 1/1000" @ ISO-400 in Sunlight with Baader UVIR-Block Filter] Ultraviolet Light [f/4 for 1/200" @ ISO-400 with SB-14 UV-modified Flash and Baader UV-Pass Filter] Link to comment
msubees Posted May 23, 2015 Share Posted May 23, 2015 what is the size of this flower? I have shot a tiny one here, growing wild on my lawn, with the same UV signatures. they are tiny, about 3mm across. Link to comment
nfoto Posted May 23, 2015 Share Posted May 23, 2015 The O. stricta I'm familiar with has flowers several times larger. Link to comment
msubees Posted May 24, 2015 Share Posted May 24, 2015 Bjorn, Thanks. so what I have here must be a different species. The O. stricta I'm familiar with has flowers several times larger. Link to comment
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