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Buddleja delavayi : ウィキペディア英語版 | Buddleja delavayi
''Buddleja delavayi'' is a Chinese species discovered by Forrest in the Tali Range above Dali (2000 – 2500 m elevation), Yunnan, in 1910;〔Cotton, A. D. (1947). Spring flowering buddleias. ''RHS Journal'' Vol. 72. 1947. pp 427 – 437. Royal Horticultural Society, London.〕 it is also found in Xizang (Tibet).〔Stuart, D. (2006). ''Buddlejas''. Timber Press, Oregon, USA. ISBN 978-0-88192-688-0 〕 The species was named for l'Abbé Delavay, the French missionary and plant collector, by Gagnepain in 1912. 〔 Horticulturally, the shrub is unremarkable, of more interest to the botanist because of its resting buds and the different types of inflorescence produced through the year. 〔 ==Description== ''B. delavayi'' is a deciduous shrub or small tree growing 2 – 6 m high by up to 3 m wide. The young branches and shoots are rounded, bearing elliptic leaves 1.5 – 6 cm long, usually with short < 4 mm petioles, the margins either serrate or entire. The heavily honey-scented flowers, which appear in April and occasionally again in September, are rose-lilac with an orange eye, borne in lax, terminal and axillary panicles. The inflorescences produced in spring are small, 4 – 12 cm long, whereas those produced in autumn are more than twice the length, at 20 – 25 cm. The individual flowers are relatively large, the corollas 8 mm wide by 10 mm long, and a deep salmon - rose in colour. The buds of the spring flowers are formed in autumn, and protected from frost by small dry brown scales to resemble to those of the Cherry, and are unique within the genus.〔 Ploidy 2''n'' = 114. 〔Chen, G, Sun, W-B, & Sun, H. (2007). Ploidy variation in Buddleja L. (Buddlejaceae) in the Sino - Himalayan region and its biogeographical implications. ''Botanical Journal of the Linnean Society.'' 2007, 154, 305 – 312. The Linnean Society of London.〕
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