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Buddleja davidii
''Buddleja davidii'' (spelling variant ''Buddleia davidii''), also called summer lilac, butterfly-bush, or orange eye, is a species of flowering plant in the family Scrophulariaceae, native to Sichuan and Hubei provinces in central China, and also Japan.〔Phillips, R. and Martin Rix, ''Shrubs'', Macmillan, 1994, p210〕 It is widely used as an ornamental plant, and many named varieties are in cultivation. ''B. davidii'' is named for the Basque missionary and explorer in China, Father Armand David, who first noticed the shrub. It was found near Ichang by Dr Augustine Henry about 1887 and sent to St Petersburg. Another botanist-missionary in China, Jean-André Soulié, sent seed to the French nursery Vilmorin, and ''B. davidii'' entered commerce in the 1890s.〔Alice M. Coats, ''Garden Shrubs and Their Histories'' (1964) 1992, ''s.v.'' "Buddleia"〕
''B. davidii'' was accorded the RHS Award of Merit (AM) in 1898, and the Award of Garden Merit (AGM) in 1941. 〔Hillier & Sons. (1990). ''Hillier's Manual of Trees & Shrubs, 5th ed.''. p. 47. David & Charles, Newton Abbot. ISBN 0-7153-67447〕
==Description==
''B. davidii'' is a vigorous shrub with an arching habit, growing to in height. The pale brown bark becomes deeply fissured with age. The branches are quadrangular in section, the younger shoots covered in a dense indumentum. The opposite lanceolate leaves are 7–13 cm long, tomentose beneath when young. The honey-scented lilac to purple inflorescences are terminal panicles, < 20 cm long.〔Stuart, D. (2006). ''Buddlejas''. pp 30–34. RHS Plant Collector Series, Timber Press, Oregon. ISBN 978-0-88192-688-0〕 Flowers are perfect (having both male and female parts), hence are hermaphrodite rather than monoecious (separate male and female flowers on the same plant) as is often incorrectly stated. Ploidy 2''n'' = 76 (tetraploid). 〔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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