Updated 24 Oct 2017: Set #3 added to post #2.
Updated 27 May 2018: Restructured common names.
Synonyms:
- Hedyotis caerulea (L.) Hook.
- Houstonia caerulea var. faxinorum Pease & Moore
- Bluets
The UV-black heart of the innocent little Quaker Lady is revealed! The visible colour of this tiny flower varies from a very pale blue which is almost white to a slightly more saturated sky blue. The central structures of the flower are nicely brought out in UV.
Reference:
1. Mittelhauser et al. (2010) Bluets, page 334. The Plants of Acadia National Park. The U. of Maine Press, Orono, ME.
2. Newcomb, L. (1977) Bluets, page 156. Newcomb's Wildflower Guide. Little, Brown & Co., New York City, NY.
SET 1
Kinship Lane, Southwest Harbor, Maine, USA
15 July 2012
Wildflower
Equipment [Nikon D300-broadband + Carl Zeiss 60mm f/4.0 UV-Planar]
Visible Light [f/11 for 1/60" @ ISO 200 with onboard Flash and Baader UVIR-Block Filter]

Ultraviolet Light [f/11 for 1/60" @ ISO 200 with SB-14 UV-modified Flash and Baader UV-Pass Filter]

Ultraviolet Light: This 100% crop from the preceding photograph shows the conical cells.
