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(First upload on June 26 2010. Last on November 21 2016) [ 日本語 | English ]

Philadelphus L. (バイカウツギ) Baikautsugi (バイカウツギ, 梅花空木) Satsumautsugi (サツマウツギ, 薩摩空木) Life form: deciduous shrub Distribution: non-native to Japan → now in south to Tohoku District Habitat: forest floors and edges in the case of Japan Chromosome number: 2n = 26 Use: gardening

Synonyms: Philadelphus coronarius auct. non L. Philadelphus coronarius L. var. satsumi (Siebold ex Lindl. et Paxton) Maxim. f. nikoensis (Rehder) Ohwi ex Yonek. (ニッコウバイカウツギ), much hair on the backside f. shikokianus (Nakai) H. Ohba et S. Akiyama (シコクウツギ)

Philadelphus satsumi in Hokkaido

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[1-3] in the Arboretum of Hokkaido University near the Poplar Street. [1] on May 20 2015. [2] on May 27 2015. [3/4] on June 12 2015.

Philadelphus grandiflorus in Hokkaido

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Seiyoubaikautsugi (セイヨウバイカウツギ, 西洋梅花空木), scentless mock orange Lifeform: shrub - short tree

Distribution: eastern North America Habitat: wet woodlands

Synonyms: Philadelphus inodorus L. var. grandiflorus (Willd.) A. Gray Cultivars, e.g., double-flowered or wavy petals

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[1-3] at a roadside on N15/W3, North Ward, Sapporo, on June 20 2016.