* New topic: Gymnosperms on the Edge.
* New photo on Photospecial page: My Ginkgo seedling.
* Added photo of guitar made of Ginkgo wood on Wood-page.
* Added Hugo Boss on Art-page: fashion.
UPDATES OF MY PAGES:
* New photo on Photospecial page: Huge Ginkgo tree in fall, c. 1856, Anduze in France.
* Added photos of Aachen (Germany) + Tongeren and Maaseik (Belgium) on Where-page.
* New topic: Ginkgo trees on New York City Street Map.
* New photo on Photospecial page: female Ginkgo tree with seedlings, medieval Chateau de Bourdeilles, France.
* New photo on Photospecial page: Raindrops on Ginkgo leaf.
* Added many stamps on my Art-page.
* Added 2 new photos on picture gallery Art-page: Dijsselhof - Kunst en Samenleving
* New photo on Photospecial page: Pollen on male Ginkgo tree.
* New topic: Cretaceous fossil relative of Ginkgo discovered.
* Updated Fossils-page: Ginkgo Jurassic wood.
* Updated Literature-page: 2 new articles: 1. Ginkgo genome sequence and 2. Ginkgo Jurassic wood.
* New topic: Jurassic wood provides insights into Ginkgo wood evolution.
* New topic: Complete genome sequence of Ginkgo decoded.
* New photo on Photospecial page: Fallen Ginkgo leaves + poem by Howard Nemerov.
* Update new topic: 2nd generation A-bombed Ginkgo tree planted at UN Geneva, Oct. 3.
* New photo on Photospecial page: Old Ginkgo tree, Maldegem, Belgium + video.
* New photo on Photospecial page: Many Ginkgo trees in Zwolle, Cemetery Kranenburg.
* New photo on Photospecial page: Ginkgo leaf.
* New topic: 2nd generation A-bombed Ginkgo tree to be planted by UNITAR.
* New photo on Photospecial page: My Ginkgo seedling 1 week old.
* Added microphoto of Ginkgo stem cross section on my Wood-page.
* New photo on Photospecial page: Sprouting Ginkgo leaves in spring.
* Added to Art-page: Text and pictures first Western documentation of Ginkgo in China.
* Added on Nancy-page: photos of Ginkgo leaves on door to The Ecole de Nancy Museum, Nancy Art Nouveau by Jacques Gruber.
* New topic: The Ginkgo Tweets: 2500+ followers on Twitter!
* New photo on Photospecial page: Fallen Ginkgo leaves.
* New topic: The Ginkgo Pages Forum/Blog in 2015.
* New topic: My website and blog are archived in the National Library of the Netherlands Web Archive (Webarchief van Nederland Koninklijke Bibliotheek) for present and future generations.
* New photo on Photospecial page: potted Ginkgo in fall colours.
* Added photos of Ginkgo trees 5th Avenue NYC, Washington Square Park and Philadelphia on Where-page and Empire State building and Ginkgo tree.
* Added on Propagation-page: video of deer eating Ginkgo seeds in Japan.
* Added spherical panorama photo of Hiroshima Ginkgo at Hosen-Ji.
* Added Art-page Picture gallery: work by Tom Phillips A Humument Page 297 + Portrait of Iris Murdoch.
* New Photo on Photospecial page: Ginkgo trees in Bologna, Italy.
*Added new Ginkgo bonsai photo.
* Added new theory about the spelling of Ginkgo: on my Name-page.
* Added on Literature-page and Dalou-page: book The Subtropical Vegetation of Southwestern China by Cindy Q. Tang (contains chapter Dalou Mountains).
* New topic: The Ginkgo Tweets: 2000+ followers on Twitter!
* New supersized photos on my Photospecial page: Ginkgo huttonii fossil leaves.
* New supersized photo on my Photospecial page: Spring: my seedlings are alive!
* New supersized photo on my Photospecial page: Snow covered Ginkgo tree.
* Added: Asteroid Ginkgo to Name-page.
* New topic: Asteroid Ginkgo.
* New supersized photo + video on my Photospecial page: 4 Ginkgo trees, planted c. 1882, Strasbourg in France.
* Added new photo of female tree: leaves fall before the seeds.
* New topic: Contributions by Peter del Tredici, Harvard University.
* New topic: Story about the Ginkgo at Hellekis manor, Kinnekulle, Sweden.
* Added special page on Bonsai-page with dwarf (penjing) Ginkgo trees from China, photos by James Wilkins.
* New topic: Oliver Sacks: Night of the Ginkgo (The New Yorker).
don't mention minor updates here. Not all changes are updated on the German/French/Dutch
on the Edge
Gymnosperms - ginkgo, conifers, cycads, and gnetophytes - are one of the most threatened groups of living organisms.
EDGE Plants is an extension of the Sampled Red List Index for Plants. The Evolutionary Distinct and Globally Endangered (EDGE) method ranks gymnosperm species based on their evolutionary distinctiveness and the extinction risks they face. Gymnosperms are one of the most threatened groups of living organisms, with 40% of the species at high risk of extinction, about twice as many as the most recent estimates for all plants (i.e. 21.4%).
Although widely cultivated, only a few Chinese natural populations of Ginkgo remain (more info on my History-page).
Even without considering its extinction risk, the unique evolutionary history of Ginkgo, and the fact that it is the sole living representative of a once highly diverse group of species, make its conservation a top priority.
Read more: Gymnosperms on the Edge, Article in Nature by Forest et al., 16 April 2018.
trees on New York City Street Map
21,611 Ginkgo trees are highlighted on the New York City Street Tree Map.
The New York City Street Tree Map is the world’s most accurate and detailed map of a city’s street trees. More about this project here.
New York City Parks about the Ginkgo trees in a tweet on Twitter of August 28:
#MeetNYCsStreetTrees: The Ginkgo is one of the oldest living tree species. Find one near you on our Street Tree Map: https://t.co/IaLQCHsnkZpic.twitter.com/VGmUT2CdwA
— NYC Parks (@NYCParks) 28 augustus 2017
Results of the research, supported by the National Science Foundation (NSF), are published in this week’s issue of the journal Proceedings of the National Academy of Sciences (PNAS).
stems and leaves are similar to the Ginkgo tree, but the seeds, and especially
the structures they are born in, are unlike any other known plant, living
or extinct," says scientist Patrick Herendeen of the Chicago Botanic Garden,
co-author of the PNAS paper.
The seed-bearing structures are more comparable to those of certain extinct Peltaspermales and Umkomasiales.
Ginkgo may be the last survivor of a once highly diverse group of extinct plants, several of which show various degrees of ovule enclosure.
|Photograph with a selection
of Early Cretaceous fossil specimens of Umaltolepis mongoliensis
along with a leaf and stem from living Ginkgo.
Shown are six fossil strap-shaped leaves, three fossil capsules (one with basal stalk present), and two pieces of fossil stem.
On the left is a leaf and a stem from Ginkgo biloba.
PNAS + supporting info
Chicago Botanic Garden + more photos
More info about Ginkgo fossils on my website: Fossils-page.
Chicago Botanic Garden
wood provides insights into Ginkgo wood evolution
Recently, Chinese and French scientists led by Wang Yongdong, professor at Nanjing Institute of Geology and Paleontology of the Chinese Academy of Sciences, researched new fossil wood of Ginkgo biloba. The fossil wood (Ginkgoxylon liaoningense) was collected from the Tiaojishan Formation in western Liaoning, northeastern China. It probably dates from the Middle to Late Jurassic.
According to the researchers this discovery represents the oldest well-dated occurence of Ginkgo wood.
Its anatomy departs slightly from that of modern Ginkgo, it displays all its characteristic features. It differs only in having a more mixed type of radial pitting, which also occurs, albeit locally, in modern Ginkgo wood. The xylem structures of Ginkgoxylon liaoningense illustrates the basal state of Ginkgo wood anatomy and will contribute to the understanding of Ginkgo evolution.
Jiang, Z. et al. A Jurassic wood providing insights into the earliest
step in Ginkgo wood evolution.
Sci.Rep.6, 38191; doi: 10.1038/srep38191 (2016).
Full article: Nature.com
More info and photos of fossil Ginkgo wood on my Fossils-page.
Multiple seeds at visually different developmental stages were collected from five separate large Ginkgo trees at one of the Ginkgo refuge populations located on Tianmu Mountain, Zhejiang Province, China.
genome will be an extensive resource for studies concerning plant defences
against insects and pathogens, and research investigating early events
in tree evolution and in evolution overall.
the ginkgo genome will provide an extensive resource for studies concerning plant defenses against insects and pathogens, and research investigating early events in tree evolution and in evolution overall.
Full text article GigaScience/BioMed Central
credit: Fossil is from Klondike Mountain Formation, Republic, Ferry County,
Washington, USA, Eocene, Ypresian. Stonerose Interpretive Center Collection,
Modern leaf photo is by Ninjatacoshell, CC BY-SA via Wikimedia Commons.
He also pointed me to a short article he wrote about the popular Icho Namiki, the Ginkgo lined avenue in Meiji Jingu Gaien Park in Japan. Read his pdf here.
videos of this avenue on YouTube:
Ginkgo Tweets: now 3500+ followers on Twitter, join them !
To all my followers: thank you !!
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