Buddleja yunnanensis

Buddleja yunnanensis
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Lamiales
Family: Scrophulariaceae
Genus: Buddleja
Species: B. yunnanensis
Binomial name
Buddleja yunnanensis
Gagnep.

Buddleja yunnanensis is a vigorous shrub native to Yunnan and much of the rest of south-western China, where it grows on forest margins, thickets, and along streams at elevations of 1,000 2,500 m. The shrub was first described and named by Francois Gagnepain in 1915, however its taxonomy remains a matter of contention. [1] [2] [3]

Description

B. yunnanensis can exceed 3 m in height. The opposite lanceolate leaves are of variable size, < 12 cm long by 4.5 cm wide. The lilac flowers form short panicles only 6 cm long by 2 cm wide, located at the ends of the shoots. [1] Chromosome number is 2n = 38 (diploid). [4]

Cultivation

Although hardy, the species is very uncommon in cultivation. Hardiness: USDA zone 8. [1]

References

  1. 1.0 1.1 1.2 Stuart, D. (2006). Buddlejas. RHS Plant Collector Guide. Timber Press, Oregon, USA. ISBN 978-0-88192-688-0
  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
  3. Leeuwenberg, A. J. M. (1979) The Loganiaceae of Africa XVIII Buddleja L. II, Revision of the African & Asiatic species. H. Veenman & Zonen, Wageningen, Nederland.
  4. 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.