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4. Flower diameter small, ca . 2.54.0 cm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Flower diameter medium-sized, ca . 4.04.8 cm . . . . . . . . . . . . . . . . . . . . . . . . .8 Flower diameter large, ca . 4.86.0 cm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 5. Flowers in autumn, midwinter, or very early spring before the cherry season . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Flowers in spring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 6. Flowers early in the season, often with frozen, half-opened flower buds; peduncle shorter than 1 cm; young foliage bronze-brown; flower diameter 3.03.7 cm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 'Fudan-zakura' 7. Petiole pubescent; young foliage green or bronze-green; peduncle longer than 1.5 cm; flower diameter 2.53.0 cm, late flowering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Prunus serrulata var . pubescens Young foliage red to brown-red; sepals not serrated; flower diameter 2.53.5 cm . . . . . . . . . . . . . . . . . . . . . . . . . . . .Prunus serrulata var . spontanea Young foliage bronze-green to green; sepals lanceolate, with a few teeth, or serrated; flower diameter 3.54.0 cm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Prunus serrulata var . speciosa 8. No flowers with petaloids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Flowers have petaloids or some flowers show few petaloids . . . . . . . . . . . . . . . . . .10 9. Young foliage brown to bronze-brown; richly blossoming; blossom fragrant . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 'Taki-nioi' Young foliage bronze-green to green; sepals lanceolate, with a few teeth, or serrated; flower diameter 3.54.0 cm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Prunus serrulata var . speciosa 10. Blossom strongly fragrant, petals 1216 mm wide; heart of flower does not turn red at end of flowering; vase-shaped tree with flattened crown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 'Jo-nioi' Blossom occasionally fragrant, sparingly pubescent on petiole, peduncle, pedicel, or calyx; heart of flower turns red at end of flowering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 'Shibayama' Not like that, blossom not or only slightly fragrant . . . . . . . . . . . . . . . . . . . . . . . . . 11 11. Blossom with no distinct fragrance; broad, fastigiate tree shape; petals 1619 mm wide . . . . . . . . . . . . . . . . . . . . . . . . . . . . .'Hakusan-hata-zakura' Blossom not distinctly fragrant, petals with irregular wrinkles and often fimbriate at the top end . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 'Washi-no-o'