A kind of acorn "Quercus Spinosa" which grew thick in the mountainside by Mr.Tadashi Kurano in August, 2004
When the summer comes, the acorn becomes the woods of the evergreen oaks with the 2 - 6 m height which stretched to
both sides of the way from Guozhuangping Terrace to Laoniuyuanzi Terrace of Lake Valley.
According to the former assistant professor Tikao Nishiguti (Northeast University of Japan), this acorn is "Quercus Spinosa".
The reason why only the leaf as much as 2 m of the lower parts of this tree have prickles seems to be not eaten by the deer and so on
(It has the sense to endure to dry up and to be blowy, too).
Quercus Spinosa grow thick in Mosaic -shape on the lime rock area or the steep slope which has the strong alkalinity of 2000 - 3800 m height.
Quercus Spinosa in Japan seems to have crossed from China in the times when Japan still borders continent,
and the species of Quercus Spinosa which is seen on Lake Valley seems to become this ancestor.
Note-1 : In China as of 2014, this is considered to be "Quercus semicarpifolia".
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