Buddleja yunnanensis

Buddleja yunnanensis
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Asterids
Order:	Lamiales
Family:	Scrophulariaceae
Genus:	Buddleja
Species:	B. yunnanensis
Binomial name
	Buddleja yunnanensis; Gagnep.

Buddleja yunnanensis is a 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. This species is distinct from and does not resemble Buddleja nivea var. yunnanensis, although sometimes the latter is erroneously labelled as B. yunnanensis.[1][2][3]

Description

Buddleja yunnanensis is a small to medium shrub, 0.5–4 m tall with 4-angled branchlets, pubescent at first, becoming glabrescent. Leaves are opposite and the blade elliptic to narrowly ovate, up to 12 by 4.5 cm, with tomentose undersides and glabrous above. Inflorescences terminal and small, relatively few flowers, densely spicate, only up to 6 cm long. Corolla lilac, with the tube 9 mm long, the outside with dense stellate hairs. Stamens are inserted near base of corolla tube and the anthers ovate. Ovary ovoid, 3 × 2 mm, stellate tomentose except for lower third; stigma subcapitate. Capsules ellipsoid, stellate tomentose, approximately 4 × 3 mm. Seeds unwinged, ovoid to ellipsoid.[2] Chromosome number is 2n = 38 (diploid).[4]

Cultivation

The species is not known to be in cultivation. Hardiness: USDA zone 8, based on its native range.[3]

References

Stuart, D. (2006). Buddlejas. RHS Plant Collector Guide. 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
Leeuwenberg, A. J. M. (1979) The Loganiaceae of Africa XVIII Buddleja L. II, Revision of the African & Asiatic species. H. Veenman & Zonen, Wageningen, Nederland.
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.

This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.

[Stuart-1] Stuart, D. (2006). Buddlejas. RHS Plant Collector Guide. 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

[Leeuwenberg-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.

[Chen-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.