Actinidia polygama (Siebold & Zucc.) Maxim., Actinidiaceae

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Present on Pacific Islands?  no

Primarily a threat at high elevations?  no

Risk assessment results:  Evaluate, score: 2 (Go to the risk assessment)

Common name(s): [more details]

Chinese: ge zao mi hou tao

English: cat-powder, silvervine

Japanese: mata-tabi

Habit:  shrub

Description:  "Climbing shrubs, large, deciduous. Branchlets glabrous, lenticels inconspicuous; pith white, large, solid. Petiole purplish red, 1.5-3.5 cm, glabrous; leaf blade abaxially pale green, adaxially green to entirely white, sometimes only upper half white or yellowish, ovate to oblong-ovate, 7-14 x 4.5-8 cm, membranous to thinly papery, abaxially glabrous or sparsely curly-tomentose to strigillose on midvein and lateral veins, adaxially sparsely strigillose, veins conspicuous abaxially, subconspicuous adaxially, lateral veins 6 or 7 pairs, arcuate-ascending, veinlets reticulate, abaxially subconspicuous with parallel cross-bars, inconspicuous adaxially, base broadly cuneate to rounded, margin serrulate, apex acuminate to abruptly acuminate. Inflorescences 1-flowered, or 2- or 3-flowered in a fascicle; pedicels 6-8 mm, slightly puberulent. Flowers white. Sepals (4 or)5, ovate to oblong-ovate, 5-7 mm, both surfaces glabrous or sparsely puberulent. Petals 5, obovate to oblong-obovate, 0.8-1.3 cm. Filaments 5-6 mm; anthers yellow, ovoid, 1-1.5 mm, sagittate at base. Ovary bottle-shaped, 4-6 mm, glabrous; styles 3-4 mm. Fruit orange when mature, ovoid to cylindric-ovoid to oblong-ovoid, 2.5-3 cm, glabrous, lenticels absent, rostrate at apex. Seeds 1.5-2 mm"  (Flora of China online).

Habitat/ecology:  In China (native), "mountain forests, also widely cultivated; 500-1900 m"  (Flora of China online).

Propagation:  Seed

Native range:  Far eastern Asia (Russia, China, Korea, Japan)  (GRIN).

Presence:

Pacific Rim
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
Australia Australia (continental)	Australia (continental)	introduced cultivated	Randall, R. P. (2007) (p. 20)
China China	China (People's Republic of)	native cultivated	Zhengyi, Wu/Raven, Peter H./Deyuan, Hong (2013)
Japan Japan	Japan	native cultivated	U.S. Dept. Agr., Agr. Res. Serv. (2013)
North Korea North Korea	North Korea (Democratic People's Republic of)	native	U.S. Dept. Agr., Agr. Res. Serv. (2013)
South Korea South Korea	South Korea (Republic of)	native	U.S. Dept. Agr., Agr. Res. Serv. (2013)

Also reported from
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
United States (continental except west coast) United States (other states)	United States (other states)	introduced	U.S. Dept. Agr., Nat. Res. Cons. Serv. (2013) New York

Control:  If you know of control methods for Actinidia polygama, please let us know.