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Welcome, this blog belongs to my website The Ginkgo Pages about the tree Ginkgo biloba. Please post your comment/question or mail me. Thank you! - Cor Kwant
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May 14, 2017

Ginkgo botanical drawing by Mary E. Eaton in Addisonia


Ginkgo biloba botanical drawing (Plate 362, 1926) by Mary E. Eaton in Addisonia, colored illustrations and popular descriptions of plants, a journal published by the New York Botanical Garden (1916- (1964)).

Picture: Archive.org

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April 22, 2017

Study circle around the Ginkgo tree

Leiden Law School - Library: Study circle around the Ginkgo tree.

After the renovation of Kamerlingh Onnes Building, a birch tree was planted in the library. However, due to the poor growth conditions, this tree died. 
Then a Ginkgo tree was planted on the same place in 2007 and it is still alive!  
This happened with a symbolic act in which the farewell speech of  retired rector of Leiden University D.D. Breimer was buried between the roots of the Ginkgo.  
Meanwhile, the speech of his successor, Van der Heijden, has been buried there.

Another photo of this Ginkgo here

Story in Dutch here.
Photo: Leiden Law 

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April 08, 2017

Bird Jeholornis and Ginkgo, Cretaceous



bird Jeholornis in the morning light

It is eating the seeds of a fallen branch of the Ginkgo tree.
Jehol Group of early Cretaceous of China (Jiufotang formation, around 120 million years ago).

High resolution picture here.

Picture: Paleoart by Things with feathers

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March 29, 2017

Ginkgo seeds collection and processing, Japan



Ginkgo seeds collection and processing in fall.
The seeds are picked by hand or with a stick (shaking).
After that they are cleaned, washed and dried in the sun. 
Then they are packed for sale (vacuum sealed).

Location: Shizuoka Prefecture Shizuoka City, district Shimizu-cho Ihara, Japan.

Video by Ja-Shimizu.org on YouTube.

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March 17, 2017

Updates of my website The Ginkgo Pages

 * New photo on Photospecial page: Pollen on male Ginkgo tree.
 
* New topic: Cretaceous fossil relative of Ginkgo discovered.

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March 08, 2017

Cretaceous fossil relative of Ginkgo discovered

An international team of paleontologists  have discovered a new extinct species of plant from the Early Cretaceous  that appears to be distantly related to living Ginkgo biloba. The fossils, named Umaltolepis mongoliensis, were collected from ancient peat deposits at the Tevshiin Govi lignite mine in the steppes of central Mongolia. 

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).

"The 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.  

Read more: 
PNAS  + supporting info
Chicago Botanic Garden + more photos 

More info about Ginkgo fossils on my website: Fossils-page.

Picture: Chicago Botanic Garden

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February 24, 2017

Ginkgo forest Hongcheon


Hongcheon forest,  43,000 sq.m, has around 2,000 Ginkgo trees.
Location Hongcheon, Gangwon-do Province, S. Korea. Open to the public in October.
It is a popular autumn attraction in Korea.



Video on YouTube.



Video YouTube.

Photo Korea Travel.

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February 14, 2017

Swimming Ginkgo sperm


Ned Friedman, director of the Arnold Arboretum, Harvard University, writes about the swimming of the Ginkgo sperm on his blog:

"Why would a ginkgo tree, whose seeds may be found more than a hundred feet in the air, resort to swimming sperm to find a mate? The answer is rooted in history. The ancestors of all land plants (green algae) had swimming sperm that sought out (swam to) eggs to create the next generation. A pretty good idea if you live full time in the water.  Amazingly, after all of these years (475 million, to be precise, since the first green algae colonized land), sperm of ginkgo trees, cycads, ferns, horsetails, mosses, and other groups of plants still find their egg-mates by swimming, tracking the chemical signals that the conspecific (same species) egg is emitting to attract a suitor. Truly, this is a vestige of evolutionary history."

Read full article here

More info on my website: History-page + Propagation-page and Ovule-page.


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January 25, 2017

Ginkgo and concert, Gyeongju Ungok Seowon



Concert near an ancient Ginkgo tree.

Location: Gyeongju Ungok Seowon (Confucian academy, 1784) in South Korea. 

Along with its original purpose for education, the academy still functions as a major site for clan activities of the descendents of the sage revered here.
Gyeongju is Korea's ancient capital for nearly a millennium and is one of the richest cultural and historic areas in Asia, including UNESCO World Heritage sites.

Large photo of this magnificent tree here

Video by GBI Broadcasting on YouTube. 

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January 13, 2017

Ginkgo botanical wall chart, 1900


Bevruchting van Ginkgo
  (fertilization of Ginkgo)

Watercolor, c. 1900
Creator: C.B. van der Zeijde 
Dimensions: 100,7 x 71 cm

Collection: The art of knowledge: educational botanical wall charts 1870-1960; University of Amsterdam

More info: ovule development on my website:
Ovule-page + Propagation page.

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January 09, 2017

Updates of my website The Ginkgo Pages

* 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.

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December 22, 2016

Discovery of fossil wood Ginkgo biloba



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.


Article: 
Jiang, Z. et al. A Jurassic wood providing insights into the earliest step in Ginkgo wood evolution.
Scientific Reports 6, art.no. 38191; doi: 10.1038/srep38191 (2016).

Full article: Nature.com
 
Photo: CRIENGLISH.com

 More info and photos of 

fossil Ginkgo wood on my Fossils-page.

 

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December 20, 2016

Swan Lake with Ginkgo leaves


"Swan Lake"  ballet as seen by Prof. Zhonglang Wang,
Kunming Botanical Garden, Chinese Academy of Sciences, Beijing.
Figures composed of Ginkgo leaves, stalks and seeds, wonderful!
See more here.


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December 18, 2016

Merry Christmas - Happy 2017


**********************

Wishing all visitors of my forum-blog, website The Ginkgo Pages , YouTube channel and Twitter 
Peace and Happiness at Christmas and throughout 2017 ,
Cor Kwant

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December 10, 2016

Ginkgo Poem Howard Nemerov

Washington University in St. Louis, Missouri has several Ginkgo trees growing on its campus. Well-known is its Ginkgo Walk, that became the inspiration for WashU former professor Howard Nemerov to write his famous poem The Consent; he loved the Ginkgo Walk.
The path leads from the Brookings Quad to the rest of the campus - and directly to Olin Library.
More on my blogpost of  September 22, 2011.

Oliver Sacks wrote about this poem in The New Yorker of November 24, 2014: Night of the Ginkgo.
 
On this video WashU students read Howard Nemerov’s poem.
Please do not read the video subtitles (incorrect), but read the correct text + more info on my website.



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