Buddleja curviflora

Buddleja curviflora
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Asterids
Order:	Lamiales
Family:	Scrophulariaceae
Genus:	Buddleja
Species:	B. curviflora
Binomial name
	Buddleja curviflora; Hook. & Arn.
Synonyms
	Buddleja formosana Hatusima; Buddleja venenifera Makino; Buddleja curviflora var. venenifera (Makino) Makino;

Buddleja curviflora is a deciduous shrub native to southern Japan and Taiwan, where it grows in thickets on stony slopes at elevations of 100–300 m. B. curviflora was named and described Hooker & Arnott in 1838.[1] Plants in Taiwan have been described as a separate species Buddleja formosana and assessed as Critically Endangered by IUCN, but the distinction is not recognized by Li and Leeuwenberg, who sank formosana as a synonym.[2]

Description

Buddleja curviflora grows to < 2 m in height in the wild, its branches subquadrangular in section, and glabrescent. The leaves are opposite, lanceolate to ovate, 5–15 cm long by 2–6 cm wide, the upper surface glabrous, the underside almost glaucous. The purple flowers are borne on slender, terminal, one-sided panicles 5–15 cm long; flowering occurs in June and July.[1] Ploidy 2n = 38 (diploid).[3]

Cultivation

The shrub is rare in cultivation. In the UK, specimens are grown at the Royal Botanic Garden Edinburgh, the Royal Horticultural Society garden at Wisley, and at Longstock Park Nursery, NCCPG national collection holder, near Stockbridge, Hampshire. Hardiness: USDA zones 8–9. [1]

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References

Stuart, D. (2006). Buddlejas. Timber Press, Oregon, USA. ISBN 978-0-88192-688-0
Li, P. T. & Leeuwenberg, A. J. M. (1996). Loganiaceae, in Wu, Z. & Raven, P. (eds) Flora of China, Vol. 15. Science Press, Beijing, and Missouri Botanical Garden Press, St. Louis, USA. ISBN 978-0915279371 online at www.efloras.org
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.

Leeuwenberg, A. J. M. (1979) The Loganiaceae of Africa XVIII Buddleja L. II, Revision of the African & Asiatic species. H. Veenman & Zonen B. V., Wageningen, Netherlands.

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[Stuart-1] Stuart, D. (2006). Buddlejas. Timber Press, Oregon, USA. ISBN 978-0-88192-688-0

[Li-2] Li, P. T. & Leeuwenberg, A. J. M. (1996). Loganiaceae, in Wu, Z. & Raven, P. (eds) Flora of China, Vol. 15. Science Press, Beijing, and Missouri Botanical Garden Press, St. Louis, USA. ISBN 978-0915279371 online at www.efloras.org

[Chen-3] 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.