Pacific Island Ecosystems at Risk (PIER)

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Houttuynia cordata
Thunb., Saururaceae
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Present on Pacific Islands?  yes

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: ji cai

English: chameleon plant, Chinese lizard tail, edible houttuynia, fish mint, fish plant, fishwort, heartleaf, heartleaf houttuynia, Himalayan spinach, houttuynia, lizard's tail, Vietnamese fish plant, white chaplu, wild houttuynia

French: hottonie, houttuynie

Japanese: dokudami

Korean: yagmomil

Habit:  herb

Description:  "Herbs (5-) 30-60 cm high; rhizomes creeping, thin. Basal part of stems creeping, rooted in whorls at nodes, apical part erect, glabrous or pubescent on nodes, sometimes purplish red. Stipular sheath (0.5-) 1-2.5 cm, 1/4-1/2 as long as petiole, usually ciliate, base enlarged and slightly clasping; petiole (0.7-) 1-3.5 (-4) cm, glabrous; leaf blade broadly ovate or ovate-cordate, (1.5-) 4-10 x (1.8-) 2.5-6 cm, thinly papery, densely glandular, usually glabrous, sometimes pubescent at vein axils, usually purplish abaxially, base cordate, apex shortly acuminate; veins 5-7, basal or innermost pair arising ca. 5 mm above base, if 7-veined, then outermost pair very slender or inconspicuous; reticulate veins ± conspicuous. Inflorescences (0.4-) 1.5-2.5 (-2.7) cm x (2-) 5-6 mm; peduncles 1.5-3 cm, subglabrous; involucral bracts oblong or obovate, (5-) 10-15 x (3-) 5-7 mm, apex rounded. Bract beneath each flower linear, terete, inconspicuous. Stamens longer than ovary. Capsule 2-3 mm, with persistent styles"  (Flora of China online).

Habitat/ecology:  In China (native), "ravines, streamsides, forests, wet meadows, slopes, thicket and field margins, trailsides, roadsides, ditch banks; near sea level to 2500 m  (Flora of China online).

Propagation:  Seed and rhizomes.

Native range:  Bhutan, Nepal, China, Taiwan and Japan (including Ryukyu Islands (GRIN).

Presence:

Pacific
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
State of Hawaii
Hawaiian Islands
O‘ahu Island   Bishop Museum (U.S.A. Hawaii. Honolulu.) (1978) (voucher ID: BISH 421652)
Taxon name on voucher: Houttuynia cordata Thunb.
New Caledonia
New Caledonia Archipelago
Île Grande Terre introduced
cultivated
MacKee, H. S. (1994) (p. 128)
Voucher cited: MacKee 29487
Pacific Rim
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
China
China
China (People's Republic of) native
Zhengyi, Wu/Raven, Peter H./Deyuan, Hong (2013)
Ravines, streamsides, forests, wet meadows, slopes, thicket and field margins, trailsides, roadsides, ditch banks; near sea level to 2500 m. Anhui, Fujian, Gansu, Guangdong, Guangxi, Guizhou, Hainan, Henan, Hubei, Hunan, Jiangxi, Shaanxi, Sichuan, Xizang, Yunnan, Zhejiang.
Japan
Japan
Japan (country) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Honshu, Kyushu, Shikoku
Japan
Ryukyu Islands
Ryukyu Islands native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Taiwan
Taiwan Island
Taiwan Island native
Zhengyi, Wu/Raven, Peter H./Deyuan, Hong (2013)
Ravines, streamsides, forests, wet meadows, slopes, thicket and field margins, trailsides, roadsides, ditch banks; near sea level to 2500 m.
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)
Louisiana, Pennsylvania
United States (continental except west coast)
United States (other states)
USA (Florida) introduced
U.S. Dept. Agr., Nat. Res. Cons. Serv. (2013)


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This page was created on 25 OCT 2010 and was last updated on 8 NOV 2010.