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Buddleja colvilei 24 May 2008

Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Cladus: Asterids
Cladus: Lamiids
Ordo: Lamiales

Familia: Scrophulariaceae
Tribus: Buddlejeae
Genus: Buddleja
Sectio: Buddleja sect. Alternifoliae
Species: Buddleja colvilei
Name

Buddleja colvilei Hook.f. & Thomson
References

J. D. Hooker, Ill. Himal. pl. t. 18. 1855
USDA, ARS, Germplasm Resources Information Network. Buddleja colvilei in the Germplasm Resources Information Network (GRIN), U.S. Department of Agriculture Agricultural Research Service. Accessed: 07-Oct-06.


Buddleja colvilei is endemic to the eastern Himalaya; discovered by Hooker in 1849, he declared it 'the handsomest of all Himalayan shrubs.' [1] In 1896 the species was awarded the RHS First Class Certificate (FCC),[2] given to plants 'of outstanding excellence for exhibition'.[3]

Description

B. colvilei is a deciduous large shrub or small tree which can grow > 13 m, often single stemmed. The flowers are arranged in drooping panicles, 15–20 cm long by > 8 cm wide, rose pink to crimson, but often white within the corolla tube. The flowers are among the largest of any in the genus, and appear in June. The leaves are < 25 cm long, narrow, shallowly - toothed, and tapered at either end.[1] This species has a high degree of polyploidy with a correspondingly high chromosome number of 2n = 152–456 (8x–24x).[4]
Cultivation

The shrub is not entirely hardy in the UK, and can only be reliably grown outdoors along the Atlantic coast.[1] Hardiness: United States Department of Agriculture zones 8–9.[5]
Cultivars

Buddleja colvilei 'Kewensis', distinguished by its dark red flowers.

References

Bean, W. J. (1914). Trees and shrubs hardy in the British Isles. 7th Ed. 1950, Vol. 1, p. 320.
Hillier & Sons. (1990). Hillier's Manual of Trees & Shrubs, 5th ed.. p. 47. David & Charles, Newton Abbot. ISBN 0-7153-67447
Royal Horticultural Society, (2005). RHS Plant Finder 2005-2006, Dorling Kindersley. ISBN 1-4053-0736-6
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.

Stuart, D. D. (2006). Buddlejas. RHS Plant Guide. Timber Press, Oregon. ISBN 978-0-88192-688-0

Leeuwenberg, A. J. M. (1979) The Loganiaceae of Africa XVIII Buddleja L. II, Revision of the African & Asiatic species. H. Veenman & Zonen, Wageningen, Nederland.
Phillips, R. & Rix, M. (1989). Shrubs, Pan Books, London.
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

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