Coreopsis grandiflora 'Baby Sun' [Large-flowered Tickseed]

[Andrea B.]

Blum, A.G. (2013) Coreopsis grandiflora Hogg et Sweet 'Baby Sun' (Asteraceae) Large-flower Tickseed. Flowers photographed in ultraviolet and visible light. http://www.ultraviol...wered-tickseed/

 

Charlotte Rhoades Park & Butterfly Garden, Southwest Harbor, Maine, USA

16 July 2012

Cultivar in botanical garden

 

Comment:

The visible dark red patches on the ray base disappear in the overall dark UV-signature. There is some light-dependent UV-reflectivity on the rays from presence of conical cells.

 

Equipment [Nikon D300-broadband + Carl Zeiss 60mm f/4.0 UV-Planar]

 

Visible Light [f/11 for 1/125" @ ISO 200 with On-board Flash and Baader UVIR-Block Filter]

 

Ultraviolet Light [f/11 for 1/60" @ ISO 320 with SB-14 UV-modified Flash and Baader UV-Pass Filter]