Tree with flowerbuds. Tokyo bot.g., Japan. Planted. 2008-06-10.

Branch with flowerbuds. Tokyo bot.g., Japan. Planted. 2008-06-10.

Branch in flower. Kyoto bot.g, Japan. Planted. 2001-05-10.

Branch with no flowers. Kyoto bot.g, Japan. Planted. 2001-05-10.

Bonsai, tree in flower. Kyoto bot.g, Japan. Planted. 2001-05-04.

Flowering branches. Kobe municipal arboretum, Japan. Planted. 2001-05-11.

Closeup of flower. Kobe municipal arboretum, Japan. Planted. 2001-05-11.

Bush. Kobe municipal arboretum, Japan. Planted. 2001-05-11.

Bonsai, flowering branch. Kyoto bot.g, Japan. Planted. 2001-05-04.

Flowers and leaf. Gothenburg bot.g., Sweden. Planted. 2005-06-03.

Classic texts: Sayre 1917: the pics.