Floral Reflectance Database
This may be of interest to a number of you working with pollination/ bee-host dynamics.
Their FAQ is copied below:
What is FReD?
FReD stands for the Floral REflectance Database. It is a database containing the spectral reflectances of many species of flower. A spectrophotometer is used to acquire these measurements. This works by shining a light on to the sample, and the proportion of light reflected back at the different wavelengths is measured.
Is there a charge for accessing FReD?
No. FReD is open-access and free for anyone to use.
How is FReD put together?
What are the hardware/software requirements to run FReD?
FReD has been extensively tested on Mozilla Firefox, Microsoft Internet Explorer and Netscape throughout its development and is fully compatible with these. Opera and Safari users will experience problems with the hexSearch facility.
We recommend visitors use Mozilla Firefox to access this site. It can be downloaded for free from the Mozilla homepage.
How many samples are there in the database?
There is reflectance data for over 2000 individual samples in the database. Other entries will be added as measurements from more flowers are gathered and published.
Who developed FReD?
FReD was developed by research students at Queen Mary, University of London in the UK, in collaboration with researchers at the Royal Botanic Gardens, Kew.
What features does FReD contain?
* Simple Search - enter a keyword or combine your keyword with boolean expressions to search for records
* Advanced Search - select specific attributes/features with keywords to search for records
* hexSearch - select a region on the Colour Hexagon and search for flower records with hexagon coordinates in that region (not available for Safari or Opera users)
* Individual Colour Hexagon - you can view an individual colour hexagon diagram plotted for each flower record that has spectral reflectance data available. The excitation values are calculated and displayed alongside this.
* Individual Reflectance Graph - you can view a reflectance graph for each flower record available on the database. Simply click on the record that you are interested in.
* View all returned records on one Colour Hexagon Graph - you can view a single Colour Hexagon model with all returned records plotted on this. It will also produce some statistics of the most common keywords appearing in the results.
Sam Droege sdroege@...
w 301-497-5840 h 301-390-7759 fax 301-497-5624
USGS Patuxent Wildlife Research Center
BARC-EAST, BLDG 308, RM 124 10300 Balt. Ave., Beltsville, MD 20705
THE FORCE THAT THROUGH THE GREEN FUSE DRIVES THE FLOWER
The force that through the green fuse drives the flower
Drives my green age; that blasts the roots of trees
Is my destroyer.
And I am dumb to tell the crooked rose
My youth is bent by the same wintry fever.
The force that drives the water through the rocks
Drives my red blood; that dries the mouthing streams
Turns mine to wax.
And I am dumb to mouth unto my veins
How at the mountain spring the same mouth sucks.
The hand that whirls the water in the pool
Stirs the quicksand; that ropes the blowing wind
Hauls my shroud sail.
And I am dumb to tell the hanging man
How of my clay is made the hangman's lime.
The lips of time leech to the fountain head;
Love drips and gathers, but the fallen blood
Shall calm her sores.
And I am dumb to tell a weather's wind
How time has ticked a heaven round the stars.
And I am dumb to tell the lover's tomb
How at my sheet goes the same crooked worm.
- Dylan Thomas