Salix udensis
Salix udensis is a species of willow native to northeastern Asia, in eastern Siberia, northeastern China, and northern Japan.
It is a deciduous shrub growing to 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.
The cultivar S. udensis 'Sekka' is grown as an ornamental plant; it has fasciated stems, highly prized by Ikebana flower arrangers. The Sekka cultivar has also been found to be resistant to plant pathogens such as rust caused by pathogenic fungi.
