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5 petals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 'Ojochin' Young foliage brownish; leaves usually with an acuminate tip; flower diameter 5.56.0 cm; almost no flowers with more than 5 petals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 'Tai-haku' 13. Petiole pubescent; young foliage green or bronze-green; peduncle longer than 1.5 cm; flower diameter 2.53.0 cm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Prunus serrulata var . pubescens Petiole glabrous . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 14. Flower diameter medium-sized, less than ca . 4.7 cm . . . . . . . . . . . . . . . . . . . . . . . 15 Flower diameter large, more than ca . 4.7 cm . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 15. Flowers rather early; 23 flowers per corymb; vigorous growth; petals ca . 18 × 15 mm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .'Bendono' Flowers early or in the middle of the cherry season; rather slow growing; petals ca . 18 × 13 mm . . . . . . . . . . . . . . . . . . . . . . . . . . . . .'Tagui-arashi' Flowers early or in the middle of the cherry season; rather slow growing; blossom fragrant, petals ca . 19 × 16 mm . . . . . . . . . . . . . . . .'Arashiyama' Flowers in the middle of the cherry season; 34 flowers per corymb, remarkably pink, frequently with extra petals; rather slow growing; petals ca . 20 × 17 mm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .'Choshu-hizakura' 16. Mature leaves mostly with caudate tip; corymb less than 5 cm long; petals very smooth; blossoms on spurs . . . . . . . . . . . . . . . . . . . . 'Mikuruma-gaeshi' Mature leaves often lacking caudate tip; corymb often more than 5 cm long; petals a little folded with undulations at the edge; no blossoms on spurs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 'Ojochin' 17. Flowers cream-yellowish or yellowish green . . . . . . . . . . . . . . . . . . . . . . . . . . 'Ukon' Flowers white or pink . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 18. Tree shape narrow and erect, corymbs erect . . . . . . . . . . . . . . . . . . .'Ama-no-gawa' Tree vase-shaped or broadly vase-shaped, corymbs horizontal or nodding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 19. Pedicel, calyx, and sepals remarkably purplish red; leaf base cuneate; mature leaves ovate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .'Taoyame' Not like that . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 20. Mature leaves often lacking caudate tip; many flowers with only 5 petals; pedicel not particularly sturdy or thin . . . . . . . . . . . . . . . . . . . . . . .'Ojochin' Mature leaves with caudate tip; many flowers with more than