As featured June 7, 2012, at www.cnjonline.com
Exploring a patch of thistles, bloom after bloom, the picture was the same.
A
big, round bee behind protruded from within each purple head, looking
as if the rotund creatures had flown so fast at the flowers, they had
crashed and become permanently imbedded face-first.
But of course
they weren’t stuck, and, as soon as the sound of footsteps reach their
buried heads, they popped out and took to the air, buzzing in
irritation.
Some of the most beautiful flowers to be seen in early
summer on the eastern plains, thistles might be nice to look at, but in
all their prickliness they don’t exactly go out of their way to be
approachable.
Or do they...
If recent research is correct,
thistles could actually be working overtime to be inviting, though being
put into vases isn’t exactly the angle of their ambition.
In
fact, not only is it OK if they’re prickly and abrasive, it might be
better and certainly explains the bee behinds that seem to appear as
soon as they open.
It appears the romance between bees and flowers isn’t defined by color and fragrance quite like it is between humans and petals.
Rather,
it’s texture that helps a flower woo a bee and win the pollen,
according to a recently published study conducted by scientists at the
University of Cambridge.
Presenting bees with petunias whose
petals had both smooth and conical cell structure, researchers found
that time and time again, bees went to the flowers with the rougher
surface.
The reason is quite simple — grip.
Valuable like
slip-stop stickers on the bottom of the bathtub, the cone-shaped cell
structure of some petals provides bees a near Velcro hold as they make
their way to the center of a flower in search of nectar.
And it’s a
good thing, because moving flowers are the ones that best attract the
3D eyes of a bee, a point proven in the lab when scientists put flower
boxes containing plants on mechanized “shaking” tables to simulate stems
swaying in the breeze. Consistently, they documented the bees zooming
to the textured plants.
It makes a lot of sense really, since
trying to hang on to a slick moving bloom while working would just take
far too much energy if there’s another option.
So you may love
your fancy snapdragons, but their ups and downs and angles and curves
just don’t convey the same message to a bee, especially if there’s a
rough-petaled petunia nearby.
Particularly in our neck of the woods, where breezy days bend thin trees to the ground.
Also
intriguing is the fact the favored petals with textured cells are
generally more subdued in color because they absorb, rather than reflect
light.
But that’s alright because fuchsia would probably be wasted on a bee anyway.
While
the color scheme of the grasslands may seem drab to the human eye,
strong light basically strips bee vision to black and white, so they
don’t even get to enjoy the occasional purple thistle in a sea of brown.
Needless
to say, while the research doesn’t change a thing for bees and their
buds, it does debunk some common misconceptions that the wild flowers of
the world have had the inside scoop on for a while — a glowing
complexion, alluring smell and smashing hues aren’t always the quickest
route to the prize.
But as luck would have it, pragmatic bees
aren’t the only game in town, so fair flowers need not despair — the
hummingbirds still love them.
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