Prunus satozakura

Satozakuras in Autumn clothing
Naturetum de Sologne

This name is not an officially accepted name, but this is the one I use to label specific Japanese Cherries.  They were Cherries ("Zakura" or "Sakura" in Japanese) often selected as the ornament of a village ("Sato" in Japanese).  Many of them are now internationally known and cloned, for the pleasure of million of admirers.  
Our Naturetum de Sologne (http://www.naturetum.com/) global target is to protect biodiversity and we do have such a program for the beautiful Prunus sargentii, with many specimens issued from seeds collected in Hokkaido shriving in our woods, asides Prunus avium which occurs naturally therein.
Satozakuras, however, are one of the limited exception for which we constitute a collection of cultivars, because of their unique characters and beauty.  See photos and come to visit our Naturetum, they are magnificent in flowers!

Prunus satozakura 'Tai Haku'
Naturetum de Sologne 

Prunus satozakura 'Ukon'
Naturetum de Sologne