Pacific Island Ecosystems at Risk (PIER)

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Sagittaria latifolia
Willd., Alismataceae
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Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Common name(s): [more details]

English: broadleaf arrowhead

Habit:  aquatic herb

Description:  "Annual perennial herbs 2-15 (-20) dm tall, arising from stout, tuberous rhizomesLeaves erect, submerged one, if present, linear and ribbon-like, emersed ones with blades sagittate, lateral lobes as long as terminal one, linear or ovate-deltate, 2-20 cm long, 0.5-12 cm wide, terminal lobe deltate to ovate-deltate or linear, 3-25 cm long, 0.7-35 cm wide, apex acuminate to subobtuse, petioles 20-70 cm long.  Flowers unisexual (and the plants monoecious or dioecious), lower flowers pistillate, upper ones staminate, and usually with some perfect flowers in the middle, or rarely all flowers perfect, scapes few, 15-70 (-90) cm long, shorter than or slightly longer than leaves, each with 2-7 verticils of flowers, pedicels 0.5-6 cm long, bracts 2-3 per flower, papery, lanceolate to deltate, 0.5-1 (-1.5) cm long, usually gibbous; sepals ovate, 5-10 mm long; petals white, very broadly elliptic, 1-2 cm long, abruptly narrowed into a claw.  Achenes 2.5-4 mm long, dorsal margin winged, beak stout, extending at a right angle from the body, 0.5-1.5 mm long" (Wagner et al., 1999; p. 1355).

Habitat/ecology:  In Hawai‘i, "naturalized in low elevation wetlands, slow streams, and taro paddies" (Wagner et al., 1999; p. 1355).

Propagation:  Seed, rhizomes.

Native range:  North and Central America (Wagner et al., 1999; p. 1355).

Presence:

Pacific
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
French Polynesia
Marquesas Islands
Hiva Oa Island introduced
invasive
Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013)
As Sagittaria trifolia C. Linnaeus
Naturalisée
French Polynesia
Marquesas Islands
Nuku Hiva (Nukahiva) Island introduced
invasive
Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013)
As Sagittaria trifolia C. Linnaeus
Naturalisée
French Polynesia
Society Islands
Huahine Island introduced
Fosberg, F. R. (1997) (p. 3)
French Polynesia
Society Islands
Tahiti Island introduced
Fosberg, F. R. (1997) (p. 3)
French Polynesia
Society Islands
Tahiti Island introduced
invasive
Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013)
As Sagittaria sagittifolia C. Linnaeus subsp. leucopetala (F.A.W. Miquel) C. Hartog. Voucher cited: J. Florence 4665 (PAP)
Naturalisée
French Polynesia
Austral (Tubuai) Islands
Raivavae (Raevavae) Island introduced
invasive
Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013)
As Sagittaria trifolia C. Linnaeus
Naturalisée
French Polynesia
Austral (Tubuai) Islands
Rurutu Island introduced
invasive
Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013)
As Sagittaria trifolia C. Linnaeus
Naturalisée
French Polynesia
Austral (Tubuai) Islands
Tubuai Island introduced
invasive
Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013)
As Sagittaria trifolia C. Linnaeus
Naturalisée
State of Hawaii
Hawaiian Islands
Hawai‘i (Big) Island introduced
invasive
Imada, Clyde T./Staples, George W./Herbst, Derral R. (2000) (p. 9)
Voucher cited: C. Imada 99-28 (BISH)
Weed in a flooded taro paddy.
State of Hawaii
Hawaiian Islands
Kaua‘i Island introduced
invasive
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 1355)
State of Hawaii
Hawaiian Islands
Maui Island introduced
invasive
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 1355)
State of Hawaii
Hawaiian Islands
O‘ahu Island introduced
invasive
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 1355)
Philippines
Philippine Islands
Philippine Islands   Waterhouse, D. F. (1993) (p. 68)
Sagittaria trifolia (=Sagittaria latifolia var. leucopetala)
Pacific Rim
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
Cambodia
Cambodia
Cambodia (Kingdom of)   Waterhouse, D. F. (1993) (p. 68)
Sagittaria trifolia (=Sagittaria latifolia var. leucopetala)
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)
Ecuador (Mainland)
Ecuador
Ecuador (Republic of) (continental) 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)
Indonesia
Indonesia
Indonesia (Republic of)   Waterhouse, D. F. (1993) (p. 68)
Sagittaria trifolia (=Sagittaria latifolia var. leucopetala)
Malaysia
Malaysia
Malaysia (country of)   Waterhouse, D. F. (1993) (p. 68)
Sagittaria trifolia (=Sagittaria latifolia var. leucopetala)
Nicaragua
Nicaragua
Nicaragua (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Singapore
Singapore
Singapore (Republic of) introduced
cultivated
Chong, Kwek Yan/Tan, Hugh T. W./Corlett, Richard T. (2009) (p. 76)
Cultivated only
Thailand
Thailand
Thailand (Kingdom of)   Waterhouse, D. F. (1993) (p. 68)
Sagittaria trifolia (=Sagittaria latifolia var. leucopetala)
United States (west coast)
United States (west coast states)
USA (California) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Vietnam
Vietnam
Vietnam (Socialist Republic of)   Waterhouse, D. F. (1993) (p. 68)
Sagittaria trifolia (=Sagittaria latifolia var. leucopetala)


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This page was created on 29 MAY 2005 and was last updated on 22 OCT 2006.