Comments
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Buddleja X alata Rehder & E. H. Wilson has been named for what is probably a hybrid between B. albiflora and B. nivea (Rehder & E. H. Wilson in Sargent, Pl. Wilson. 1: 570. 1913). This hybrid species has been collected in W Sichuan at 1300--3000 m and has the following characteristics: Shrubs 1--3 m tall; young branchlets, petioles, leaves abaxially, calyces, and corollas with scattered stellate and glandular hairs to almost glabrous. Branchlets 4-angled and with 4 elevated wings. Petiole 1--1.5 cm; leaf blade narrowly ovate, 15--25 X 4--8 cm, base cuneate, margin serrate, apex acuminate, veins reticulate. Inflorescences terminal and in axils of apical leaves, seemingly racemose or thyrsoid cymes, 10--20 X 1.5--2.5 cm; bracts and bracteoles awl-shaped, ca. 2.5 mm. Calyx campanulate, ca. 3 mm; lobes triangular, ca. 1 mm. Corolla lilac, outside stellate tomentose; tube ca. 5 mm, inside pilose but glabrous at base; lobes suborbicular, 1--1.5 X 1--1.5 mm, inside pilose only at base. Stamens inserted just below corolla mouth. Ovary ca. 1 mm, stellate tomentose. Style ca. 1 mm; stigma clavate, ca. 0.5 mm. Capsules oblong, ca. 5 mm, sparsely stellate tomentose. Seeds winged at both ends. Fl. Apr-Oct.
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Description
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Shrubs 1--3 m tall; branchlets, petioles, inflorescences, calyces, and outside of corollas glabrous or less often minutely stellate tomentose and with glandular hairs when young but glabrescent. Branchlets terete or nearly 4-angled. Petiole 2--15 mm; leaf blade ovate to narrowly elliptic, 7--30 X 1.5--10 cm, abaxially minutely stellate tomentose and with some glandular hairs, adaxially glabrous or with scattered stellate and/or glandular hairs, base cuneate to rounded, margin crenate-serrate to sometime subentire, apex acuminate, lateral veins 10--17 pairs. Inflorescences terminal, thyrsoid cymes, mostly narrow and almost cylindrical, 7--25 X 2--5 cm. Calyx campanulate, 2--3.5 mm; lobes triangular, 0.5--1.7 mm. Corolla lilac, 5--8 mm; tube 4--6.5 X 1.5--3 mm, outside glabrous or pilose above middle; lobes suborbicular, 1.2--1.5 X 1.2--1.5 mm. Stamens inserted just inside corolla mouth; anther sessile. Pistil glabrous. Ovary ovoid, 1.5--1.7 mm. Style 1--1.5 mm; stigma clavate. Capsules ellipsoid, 5--8 X 2--3 mm, glabrous. Seeds brown, spindle-shaped, with slender wings at ends. Fl. Feb-Sep.
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Distribution
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Gansu, Guizhou, Henan, Hubei, Hunan, Shaanxi, Sichuan, Yunnan
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Habitat
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* Open woodlands, forest edges, stream banks; 500--3000 m.
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Synonym
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Buddleja albiflora var. giraldii (Diels) Rehder & E. H. Wilson; B. albiflora var. hemsleyana (Koehne) C. K. Schneider; B. giraldii Diels; B. hemsleyana Koehne.
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Buddleja albiflora
provided by wikipedia EN
Buddleja albiflora is a deciduous shrub native to the mountains of central China, where it grows on shrub-clad slopes at altitudes of between 1,000 and 2,000 m. Named rather carelessly by Hemsley, the species was discovered by Henry, and introduced to western cultivation by Wilson in 1900.[1]
Description
Buddleja albiflora grows to a height of 4 m in the wild, the branches erect and glabrous. The leaves are narrow lanceolate, with a long-tapered point and wedge-shaped base, 10–22 cm long by 1–6 cm wide, toothed and dark-green, glabrous above in maturity, but covered beneath with a fine silvery-grey felt.[1] The shrub is similar to B. davidii, but has rounded stems, as opposed to the four-angled of the latter. Despite its specific name, the fragrant flowers are actually pale lilac with orange centres, borne as slender panicles 20–45 cm long by 5 cm wide at the base; they are considered inferior to those of B. davidii and thus the plant is comparatively rare in cultivation.[2] B. albiflora is hexaploid: 2n = 114.[3]
Cultivation
The shrub is fully hardy in the UK, and features in the NCCPG National Collection of Buddleja held by the Longstock Park Nursery, near Stockbridge.[4] Hardiness: USDA zones 6–9. [5]
References
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^ a b Bean, W. J. (1981). Trees and shrubs hardy in Great Britain, 7th edition. Murray, London
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^ Leeuwenberg, A. J. M. (1979) The Loganiaceae of Africa XVIII Buddleja L. II, Revision of the African & Asiatic species. H. Veenman & Zonen, Wageningen, Nederland. .
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^ 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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^ Moore, P. (2012). Buddleja List 2011-2012 Longstock Park Nursery. Longstock Park, UK.
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^ Stuart, D. (2006). Buddlejas. Plant Collector Guide. Timber Press, Oregon, USA. ISBN 978-0-88192-688-0
- Hillier & Sons. (1977). Hilliers' Manual of Trees and Shrubs, 4th Edition. David & Charles, Newton Abbot, England. ISBN 0-7153-7460-5.
- 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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Buddleja albiflora: Brief Summary
provided by wikipedia EN
Buddleja albiflora is a deciduous shrub native to the mountains of central China, where it grows on shrub-clad slopes at altitudes of between 1,000 and 2,000 m. Named rather carelessly by Hemsley, the species was discovered by Henry, and introduced to western cultivation by Wilson in 1900.
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