Pacific Island Ecosystems at Risk (PIER)

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Persicaria punctata
(Elliott) Small, Polygonaceae
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Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Other Latin names:  Polygonum punctatum Elliott

Common name(s): [more details]

English: arse-smart, dotted smartweed, turkey-troop, water smartweed

French: piment-vache, renouée ponctuée

Spanish: ananash, barbasco, hierba del bicho, padilla, yerba caimán, yerba de sapo

Habit:  herb

Description:  "Rhizomatous perennial herbs; stems green or reddish below, ascending or sometimes decumbent toward base and rooting at the nodes, slightly swollen above the nodes, 3-10 dm long, unbranched or many-branched, glandular punctate.  Leaves lanceolate to broadly lanceolate, 6-15 cm long, 0.5-2 cm wide, margins ciliate, petioles 0.3-1 cm long, ocreae cylindrical, 9-18 mm long, expanding with the nodes and eventually splitting sparsely strigillose and ± inconspicuously glandular punctate, apex truncate, long-ciliate, the bristles 1.5-6.5 mm long.  Flowers in open, erect or arching, distinctly interrupted racemes, these sometimes arranged in paniculate inflorescences 5-10 cm long, peduncles glandular punctate, each flower on a glandular punctate, jointed pedicel; tepals greenish white or nearly completely green, 2-2.5 mm long, glandular punctate with yellowish glands.  Nuts dark brown or black, trigonous or lenticular, 1.8-3 mm long, the surface glossy"  (Wagner et al., 1999; p. 1064).

Habitat/ecology:  In Hawai‘i, "naturalized along streambeds, wet areas, in running or standing water, and in disturbed wet forest, 5-1,900 m" (Wagner et al., 1999; p. 1064).

Propagation:  Seed

Native range:  "North America to South America and the West Indies, widely naturalized" (Wagner et al., 1999; p. 1064).

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
Hawai‘i (Big) Island introduced
invasive
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 1064)
Voucher cited: Rock 3450 (BISH)
State of Hawaii
Hawaiian Islands
Lāna‘i Island   Bishop Museum (U.S.A. Hawaii. Honolulu.) (1963) (voucher ID: BISH 63745)
Taxon name on voucher: Persicaria punctata (Elliott) Small
State of Hawaii
Hawaiian Islands
Maui Island introduced
invasive
Oppenheimer, Hank L. (2004) (p. 16)
East Maui. Voucher cited: Oppenheimer & F. Duvall H50216 (BISH, PTBG)
State of Hawaii
Hawaiian Islands
Moloka‘i Island introduced
invasive
Wood, K. R. (2006) (p. 19)
Voucher cited: K. R. Wood & J. Espaniola 11110 (PTBG)
Pacific Rim
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
Canada (British Colombia)
Province of British Columbia
Canada (British Columbia) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Colombia
Colombia
Colombia (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Costa Rica
Costa Rica
Costa Rica (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Ecuador (Mainland)
Ecuador
Ecuador (Republic of) (continental) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
El Salvador
El Salvador
El Salvador (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Guatemala
Guatemala
Guatemala (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Honduras
Honduras
Honduras (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Mexico
Mexico
Mexico (United Mexican States) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Nicaragua
Nicaragua
Nicaragua (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Panama
Panama
Panama (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Perú
Perú
Perú (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
United States (west coast)
United States (west coast states)
USA (Oregon) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
United States (west coast)
United States (west coast states)
USA (California) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
United States (west coast)
United States (west coast states)
USA (Washington) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)


Need more info? Have questions? Comments? Information to contribute? Contact PIER! (pier@hear.org)

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This page was created on 5 MAR 2007 and was last updated on 9 MAR 2007.