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Dodonaea viscosa subsp. cuneata [Wedge-leaf Hop-bush]


DaveO

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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/

 

Synonyms

Dodonaea cuneata Sm.

Dodonaea cuneata var. coriacea Benth.

 

Maldon, Victoria, Australia

4 August 2015

Australian Native Wildflower as Garden Specimen

 

Comment

Dodonaea 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.

post-28-0-36825900-1440133403.jpg

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.

post-28-0-09843200-1440133426.jpg

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.

post-28-0-39302900-1440133448.jpg

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.

post-28-0-06644000-1440133474.jpg

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.

post-28-0-49417700-1440133501.jpg

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.

post-28-0-76314500-1440133525.jpg

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

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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

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  • 2 months later...

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.

post-28-0-74759600-1447125928.jpg

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.

post-28-0-57634000-1447125956.jpg

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.

post-28-0-14763100-1447125983.jpg

Image Reference: DO62147

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