Salix udensis

Salix udensis
	Salix udensis 'Sekka'
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Malpighiales
Family:	Salicaceae
Genus:	Salix
Species:	S. udensis
Binomial name
	Salix udensis; Trautv. & C.A.Mey.

Salix udensis (syn. S. sachalinensis F.Schmidt) is a species of willow native to northeastern Asia, in eastern Siberia (including Kamchatka), northeastern China, and northern Japan.^[1] ^[2] It is a deciduous shrub growing to 5 m (16 ft) tall. The leaves are slender, lanceolate, 6–10 cm long and 0.8–2 cm broad, glossy dark green above, glaucous and slightly hairy below, with a serrated margin. The flowers are produced in early spring on catkins 2–3 cm long.^[3] It typically takes 20 years to reach maturity.^[4]

The cultivar S. udensis 'Sekka' (Japanese fantail willow) is grown as an ornamental plant; it has fasciated stems (stems that are joined abnormally in a flattened arrangement—hence "fantail"), highly prized by Ikebana flower arrangers.^[3] The Sekka cultivar has also been found to be resistant to plant pathogens such as rust (Melampsora spp.) caused by pathogenic fungi.^[5]

References

^ "Salix udensis". Germplasm Resources Information Network. Agricultural Research Service, United States Department of Agriculture. Retrieved 21 January 2018.
^ Jordan, Roy. "Gardening Service". Retrieved 25 April 2021.
^ ^a ^b Huxley, A., ed. (1992). New RHS Dictionary of Gardening. Macmillan ISBN 0-333-47494-5.
^ "Salix udensis". Boone County Arboretum.
^ Pei MH, Ruiz C, Shield I, Macalpine W, Lindegaard K, Bayon C, Karp A (2010). "Mendelian inheritance of rust resistance to Melampsora larici‐epitea in crosses between Salix sachalinensis and S. viminalis". Plant Pathology. 59 (5): 862–872. doi:10.1111/j.1365-3059.2010.02317.x.

External links

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[grin-1] "Salix udensis". Germplasm Resources Information Network. Agricultural Research Service, United States Department of Agriculture. Retrieved 21 January 2018.

[2] Jordan, Roy. "Gardening Service". Retrieved 25 April 2021.

[rhs-3] Huxley, A., ed. (1992). New RHS Dictionary of Gardening. Macmillan ISBN 0-333-47494-5.

[4] "Salix udensis". Boone County Arboretum.

[5] Pei MH, Ruiz C, Shield I, Macalpine W, Lindegaard K, Bayon C, Karp A (2010). "Mendelian inheritance of rust resistance to Melampsora larici‐epitea in crosses between Salix sachalinensis and S. viminalis". Plant Pathology. 59 (5): 862–872. doi:10.1111/j.1365-3059.2010.02317.x.

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