There exist multiple types of cherry trees in Japan which blossom at different times and with differently shaped flowers. The most common is the someiyoshino (染井吉野), which blossoms early with delicate, very light pink or white blossoms spaced broadly apart. Another is the shidarezakura (枝垂桜 ) - weeping cherry, with long, elegant, very pink fronds. A favorite of mine is the yamazakura (山桜 - wild cherry tree), a hardy strain which blooms late and with compact deep pink blossoms that Japanese of old culinary heritage (such as my wife) pickle with salt and turn into food. The three types mentioned are pictured below. There are more, but these are the most common. - William