DaveO Posted August 21, 2015 Share Posted August 21, 2015 Oldfield, D. 2015. Dodonaea viscosa subsp. cuneata (Sm.) J G West (Sapindaceae) Wedge-leaf Hop-bush. Flowers photographed in visible and ultraviolet light. http://www.ultraviol...-leaf-hop-bush/ SynonymsDodonaea cuneata Sm.Dodonaea cuneata var. coriacea Benth. Maldon, Victoria, Australia4 August 2015Australian Native Wildflower as Garden Specimen CommentDodonaea viscosa subsp. cuneata is known as ‘Hop-bush’ as it was used to make beer by early European Australian settlers. The plants are dioecious, i.e. the flowers are male or female and usually occur on separate plants. The pollen is wind dispersed. Female flowers, about 4 mm long Visible Light: Nikon D750 Full Spectrum Modification, Nikon Rayfact PF10545 MF-UV 105 mm f/4.5 lens, Metz 15 MS-1 flash, 1/200 s @ f/16 ISO 200, Baader UV/IR Cut Filter.Image Reference: DO60763 Ultraviolet Light: Nikon D750 Full Spectrum Modification, Nikon Rayfact PF10545 MF-UV 105 mm f/4.5 lens, Nissin Di866 Mark II flash, 1/200s @ f/16 ISO 200, Baader UV-Pass Filter.Image Reference: DO60766 Ultraviolet Induced Visible Fluorescence: Nikon D750 Full Spectrum Modification, Nikon Rayfact PF10545 MF-UV 105 mm f/4.5 lens with Baader UV/IR Cut Filter, Nichia NCSU033A UV-LED with Baader UV-Pass Filter, 30.0 s @ f/16 ISO 400.Image Reference: DO60771 Male flowers, about 3 mm diameter Visible Light: Nikon D750 Full Spectrum Modification, Nikon Rayfact PF10545 MF-UV 105 mm f/4.5 lens, Metz 15 MS-1 flash, 1/200 s @ f/16 ISO 200, Baader UV/IR Cut Filter.Image Reference: DO60774 Ultraviolet Light: Nikon D750 Full Spectrum Modification, Nikon Rayfact PF10545 MF-UV 105 mm f/4.5 lens, Nissin Di866 Mark II flash, 1/200s @ f/16 ISO 200, Baader UV-Pass Filter.Image Reference: DO60779 Ultraviolet Induced Visible Fluorescence: Nikon D750 Full Spectrum Modification, Nikon Rayfact PF10545 MF-UV 105 mm f/4.5 lens with Baader UV/IR Cut Filter, Nichia NCSU033A UV-LED with Baader UV-Pass Filter, 30.0 s @ f/16 ISO 400.Image Reference: DO60782 References:Elliott, W.R. and Jones, D.L. Encyclopaedia of Australian Plants suitable for cultivation, Volume 3, 1984, Lothian, p. 326. Published 21 August 2015 Link to comment
colinbm Posted August 21, 2015 Share Posted August 21, 2015 You are still creating magic Dave Col Link to comment
DaveO Posted August 22, 2015 Author Share Posted August 22, 2015 Thanks Col, I didn't know all about these wonders under our noses before I started taking these images. This particular plant doesn't need or use insects or birds for pollination and the very decorative red seed capsules (yet to be photographed later in the year) will form whether fertilisation occurs or not. So, is the black UV signature simply to protect the plant from UV? The red colouration in the visible images of both the female and male flowers may perhaps be due to anthocyanin type pigments as in autumn leaves and the UVIVFL may also simply indicate fluorescence of those compounds. So, perhaps UV signatures just happen and we should stop trying to explain them as ways to increase pollinator visitation. Cheers, Dave Link to comment
JCDowdy Posted August 22, 2015 Share Posted August 22, 2015 Are any craft brewers using this as a Hop substitute? Link to comment
DaveO Posted August 23, 2015 Author Share Posted August 23, 2015 There is a lot of interest in craft beers but I think they use "real" hops http://www.abc.net.au/news/2014-03-19/nrn-hops-revival/5331234 Cheers, Dave Link to comment
DaveO Posted November 10, 2015 Author Share Posted November 10, 2015 Another set taken 28 October 2015 of fruit capsules on the female bush Visible Light: Nikon D750 Full Spectrum Modification, Nikon Rayfact PF10545 MF-UV 105 mm f/4.5 lens, Metz 15 MS-1 flash, 1/200 s @ f/16 ISO 200, Baader UV/IR Cut Filter.Image Reference: DO62143 Ultraviolet Light: Nikon D750 Full Spectrum Modification, Nikon Rayfact PF10545 MF-UV 105 mm f/4.5 lens, Nissin Di866 Mark II flash, 1/200s @ f/16 ISO 200, Baader UV-Pass Filter.Image Reference: DO62145 Ultraviolet Induced Visible Fluorescence: Nikon D750 Full Spectrum Modification, Nikon Rayfact PF10545 MF-UV 105 mm f/4.5 lens with Baader UV/IR Cut Filter, Nichia NCSU033A UV-LED with Baader UV-Pass Filter, 30.0 s @ f/16 ISO 400.Image Reference: DO62147 Link to comment
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