For comparison to the ancient myths, here is a modern Tree Myth:
The Wadiba Tree : A Modern Myth  by Ryan Nellis
From the Book Description at Amazon.com:
This contemporary myth
 juxtaposes stunning visuals and evocative prose to create
an interactive story which is further enhanced by a
web site called Eyelumination.

In the story a handsome young journalist becomes
the subject of a beautiful photographers erotic photo
series. They fall in love instantly, brought together by the Wdiba tree,
a mystical plant from the Amazon. But
when mysterious strangers try to steal the tree,
the lovers are caught in a pursuit to preserve the tree and the
feelings it has awakened in them.

 
The World Tree being contacted from above.

Eyelumination users may enter The Wdiba Universe,
an interactive section which deepens the characters'
 back stories and journeys into the Amazon where the mystery of Wdiba began.
This adventurous experiment
offers different layers of the story in varying media,
engaging the public in an immediate, visceral experience.

With the publication of The Wadiba Tree,
writer and photo-illustrator Ryan Nellis has created a unique
experience for the modern reading public.
Creative Media Works and The Eyelumination Studio are
premiering this bold interactive storytelling
experience which blurs the traditional boundaries between print
 and multimedia entertainment.
Featuring full color photo-illustrations on recycled paper,
this high quality book and its online companion,
The Wdiba Universe, are setting a new precedent in publishing.