Mountain maple : Acer spicatum Lamarck
Section caudata has 3 species, such as Acer caudatum from China & Himalayas,
Acer ukurunduense from China & Japan and Acer spicatum from North America.
Leaves underside of Acer spicatum are glabrous, but those of Acer ukurunduense are hairy.
Seedling of 8 years, about 10 cm tall (owing to my bad cultivation)
Seedling of 6 years, Apr.15, 2006
Mr. Yano's managemet was so well that it would blossom.