Pacific Island Ecosystems at Risk (PIER)

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Persicaria glabra
(Willd.) M. G˘mez, Polygonaceae
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Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Other Latin names:  Persicaria densiflora (Meisn.) Moldenke; Polygonum glabrum Willd

Common name(s): [more details]

Austral: tamore

Chinese: guang liao

Hawaiian: kāmole

Maori (Cook Islands): tamore

Tahitian: pitorea, pitorea, putorea, putorea, tamore

Habit:  herb

Description:  "Annual or perennial herbs; stems red, ascending, swollen and often rooting at the nodes, 5-15 dm long, glabrous.  Leaves oblong-lanceolate to narrowly lanceolate, (10-) 14-28 cm long, (2-) 3-6 cm wide, minutely pustulate, otherwise usually glabrous, sometimes with scattered hairs on nerves of lower surface, petioles 0.5-2 cm long, ocreae tubular, usually 20-30 mm long, apex not ciliate, sometimes with a few small bristles ca. 0.5 mm long.  Flowers in open racemes, these sometimes in paniculate inflorescences 5-10 cm long, each flower on a jointed pedicel; tepals white or pinkish, 3-4 mm long, sometimes sparsely so, glandular punctate.  Nuts dark brown to nearly back, broadly ovoid, biconvex or subtrigonous, 2-2.5 mm long, the surface glossy" (Wagner et al., 1999; pp. 1061, 1064).

The species in Tonga is the same as that in Hawai'i, but has larger flowers (3-4 mm vs. 2-3 mm) than the ones occurring in Tahiti and the Cook Islands.  These two differ from P. dichotomum Bl. which A.C. Smith (1981) equated with them" (Whistler, 1988; p. 34).

Habitat/ecology:  In Hawai‘i, "naturalized and sometimes relatively common along streambeds, taro paddies, or in moving water, ca. 260-1,450 m" (Wagner et al., 1999; pp. 1061, 1064).  "Occasional in wet disturbed places" (Whistler, 1988; p. 34).

Propagation:  Seed

Native range:  Tropical and subtropical Asia and Africa and perhaps tropical America (Wagner et al., 1999; pp. 1061, 1064).  "Probably indigenous" (Whistler, 1988; p. 34).

Presence:

Pacific
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
Fiji
Fiji Islands
Fiji Islands   Swarbrick, John T. (1997) (p. 95)
French Polynesia
Society Islands
Raiatea (Havai) Island introduced
invasive
abo. intro.
Florence, J. (2004) (pp. 336-337)
French Polynesia
Society Islands
Raiatea (Havai) Island introduced
invasive
Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013)
Adventice
French Polynesia
Society Islands
Tahiti Island introduced
invasive
abo. intro.
Florence, J. (2004) (pp. 336-337)
French Polynesia
Society Islands
Tahiti Island introduced
invasive
Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013)
Vouchers cited: J. Florence 11507 (PAP), W.A. Whistler & M. Guérin 2 (PAP)
Adventice
French Polynesia
Society Islands
Tahiti Island   National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (1981) (voucher ID: PTBG 38210)
Taxon name on voucher: Persicaria glabra (Willd.) M. Gómez
French Polynesia
Tuamotu Archipelago
Tikehau (Tikahau) Atoll introduced
invasive
Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013)
Adventice
French Polynesia
Austral (Tubuai) Islands
Raivavae (Raevavae) Island introduced
invasive
abo. intro.
Florence, J. (2004) (pp. 336-337)
French Polynesia
Austral (Tubuai) Islands
Raivavae (Raevavae) Island introduced
invasive
Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013)
Voucher cited: J. Florence & W.R. Sykes 11329 (PAP)
Adventice
French Polynesia
Austral (Tubuai) Islands
Rimatara (Rimitara) Island introduced
invasive
Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013)
Adventice
French Polynesia
Austral (Tubuai) Islands
Tubuai Island introduced
invasive
abo. intro.
Florence, J. (2004) (pp. 336-337)
French Polynesia
Austral (Tubuai) Islands
Tubuai Island introduced
invasive
Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013)
Adventice
State of Hawaii
Hawaiian Islands
Hawai‘i (Big) Island introduced
invasive
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (pp. 1064, 1888)
State of Hawaii
Hawaiian Islands
Kaua‘i Island introduced
invasive
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (pp. 1064, 1888)
State of Hawaii
Hawaiian Islands
Maui Island introduced
invasive
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (pp. 1064, 1888)
State of Hawaii
Hawaiian Islands
Moloka‘i Island introduced
invasive
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (pp. 1064, 1888)
State of Hawaii
Hawaiian Islands
O‘ahu Island introduced
invasive
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (pp. 1064, 1888)
Philippines
Philippine Islands
Philippine Islands native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Philippines
Philippine Islands
Philippine Islands   Merrill, Elmer D. (1923) (p. 122)
Near rice paddies and in open swampy places.
Tonga
Ha‘apai Group
Nomuka Island   Yuncker, T. G. (1959) (p. 106)
Tonga
Tonga Islands
Tonga Islands   Whistler, W. A. (1988) (p. 34)
Tonga
Tongatapu Group
‘Eua Island   Yuncker, T. G. (1959) (p. 106)
Cited: Lister.
Tonga
Vava‘u Group
Vava‘u Island   Yuncker, T. G. (1959) (p. 106)
Voucher cited: Yuncker 16031
Wallis and Futuna
Wallis and Futuna (Horne) Islands
Futuna Island introduced
invasive
Morat, Ph./Veillon, J.-M. (1985)
Polygonum imberbe. Morat & Veillon, 1985, cited in Meyer, 2007
Wallis and Futuna
Wallis and Futuna (Horne) Islands
Wallis and Futuna Islands   Whistler, W. A. (1988) (p. 34)
Pacific Rim
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
Central America
Central America (Pacific rim)
Nicaragua (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
China
China
China (People's Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
China
China
Hong Kong native
Wu, Te-lin (2001) (p. 83)
South America (Pacific rim)
South America (Pacific rim)
Chile (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
South America (Pacific rim)
South America (Pacific rim)
Colombia (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
South America (Pacific rim)
South America (Pacific rim)
Perú (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)
Thailand
Thailand
Thailand (Kingdom of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Vietnam
Vietnam
Vietnam (Socialist Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)


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This page was created on 6 AUG 2002 and was last updated on 21 OCT 2006.