December 29, 2012
December 24, 2012
Frosted Ginkgo leaf
December 21, 2012
400 years old Ginkgo in Kyoto, Japan
December 17, 2012
Merry Christmas - Happy 2013
December 15, 2012
DLS High School in Concord, CA. and Ginkgo
John Gray of De La Salle High School in Concord, CA. wrote me about many Ginkgo trees in the Quad of this school's campus:
"It’s ginkgo leaf-fall week here at our high school, in which a dozen ginkgos were planted at its creation in 1966. ....I sent an e-mail to all our faculty and staff, reminding them that it is the last days to see the golden leaves, and linking them to your website:
’Tis the season for the scrape scrape of the metal rake gathering into piles the falling leaves in the Quad.
With big rain and wind due in tonight for several days, today may be your last chance to enjoy the golden leaves of the Ginkgos as they fall.
Two years ago we ran an article on these very interesting trees : The oldest species in the world, and the World Speed Champions of Leaf-Shedding.
Our DLS ginkgos have a pretty good leaves-per-minute rate, but there are ginkgos out there in the world that shed so fast that folks call it ‘ginkgo rain’…Here is a website that can show you ginkgo rain, and tell you a little about the good luck that the golden leaves can bring."
Read more and enjoy many photos of these Ginkgo trees on the website of De La Salle High School.
**Subscribe to receive free email updates.-- Cor Kwant **Visit my website The Ginkgo Pages.
December 09, 2012
Chinese fandance and falling Ginkgo leaves
December 07, 2012
Updates of my website The Ginkgo Pages
December 05, 2012
Ginkgo rain 2012: all leaves fall suddenly
The leaves of Ginkgo trees may all fall in a short period of time, sometimes in one or two hours! This is recorded in many parts of the world in fall. This video on YouTube is made by StAmadeus.
More info and many videos about the sudden falling of the leaves on my website: click here.
Visit my website The Ginkgo Pages.
**Subscribe to receive free email updates.-- Cor Kwant **
December 02, 2012
Discovery: Jurassic insect mimicked Ginkgo leaf
Preserved in fossil sediments dating from the late Middle Jurassic, the insect, newly named Juracimbrophlebia ginkgofolia, was discovered in 165 million-year-old deposits, as was the extinct ginkgo-like tree, Yimaia capituliformis, the mimicked plant.
Hanging down by its long forelegs from the bottom of a leaf petiole, the four long wings and body of this insect would have perfectly mimicked the hanging lobes of a single ginkgo-like leaf.
The researchers suggest the hangingfly may have evolved this mimicry to hide from predators, such as other insects, pterosaurs and small, tree-living dinosaurs and mammals, since its relatively large body and weak legs and wings would have made it easy prey. The insect also may have used mimicry to help ambush prey.
It will make the newly found Juracimbrophlebia ginkgofolia the first of its kind by tens of millions of years, as well as the first to use leaves, rather than flowers, to hide. It will also mark the first recorded example of animal and plant evolving to work together in such a way, with the tree providing cover for hangingflies, who in turn offer pest control by devouring potentially dangerous insects before they can damage the tree. In this way the insect benefited from a reciprocal relationship with the tree, a relationship that the fossils indicate lasted about 1 million years.
Phys.org + PNAS
Dong Ren et al., Jurassic mimicry between a hangingfly and a Ginkgo from China, 2012 PNAS,
Pictures:- Art by Wang Chen, from Wang et al., 2012.- Juracimbrophlebia ginkgofolia from PNAS 2012.