Lysimachia fortunei Maxim., Primulaceae

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Present on Pacific Islands?  no

Primarily a threat at high elevations?  no

Risk assessment results:  High risk, score: 8 (Go to the risk assessment)

Common name(s): [more details]

Chinese: hong gen cao

Habit:  herb

Description:  "An erect perennial herb; stolons creeping; stems terete, with small black spots, 30-60 cm high, simple or with few branches above. Leaves subopposite or alternate, elliptical or lanceolate, 4-7 cm long, 1-2 cm wide, the apex acute or obtuse, entire, sessile or subsessile. Racemes terminal, densely many-flowered, 10-20 cm long, glabrous or minutely glandular hairy, the pedicels short, about 3 mm long; the bracts acicular 3-5 mm long. Flowers white, 5-6 mm across; calyx 5-parted, segments ovate-oblong, acute or obtuse, membranous and ciliate at margin, with black glandular dots, ca. 2 mm long; corolla-lobes oblong, rounded, obtuse, ca. 3-5 mm long; stamens 5, inserted on the petals, filaments short, ca. 0.5 mm long; anthers broad ovate, ca. 0.6 mm long; ovary globose, style ca. 1 mm long. Capsules globose, 2-2.5 mm in diameter, style persistent" (Digital Flora of Taiwan).

Habitat/ecology:  "In wet places by rivers and ponds in lowlands" (Digital Flora of Taiwan).

Propagation:  Seed

Native range:  Japan, Korea, the Ryukyus, Indo-China, Taiwan and SE China. (Digital Flora of Taiwan).

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)	New South Wales	native	U.S. Dept. Agr., Agr. Res. Serv. (2013) "Rare; recorded in Australia only from a swamp in Werrikimbe National Park where it possibly occurs as a result of long distance dispersal by a wetland bird."
China China	China (People's Republic of)	native	Zhengyi, Wu/Raven, Peter H./Deyuan, Hong (2013) Wet areas, ditches, banks of rice paddies, roadsides; 0-1500 m. Fujian, Guangdong, Guangxi, Hainan, Hunan, Jiangsu, Jiangxi, Zhejiang.
China China	Hong Kong	native	Wu, Te-lin (2001) (p. 121)
Japan Japan	Japan	native	U.S. Dept. Agr., Agr. Res. Serv. (2013) Honshu, Kyushu, Shikoku
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)
Taiwan Taiwan Island	Taiwan Island	native	U.S. Dept. Agr., Agr. Res. Serv. (2013) Wet areas, ditches, banks of rice paddies, roadsides; 0-1500 m.
Taiwan Taiwan Island	Taiwan Island	native	Ching-I Peng, ed. (2013) "In wet places by rivers and ponds in lowlands, in northern part of the island".

Control:  If you know of control methods for Lysimachia fortunei, please let us know.