Chenopodium carinatum R.Br., Chenopodiaceae

Click on an image for links to BIGGER PICTURES

Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Risk assessment results:  High risk, score: 9 (Go to the risk assessment)

Common name(s): [more details]

English: Tasmanian goosefoot

Habit:  herb

Description:  "Prostrate or ascending (elsewhere also ± erect) annual herb, 15-35 (elsewhere up to 100) cm long, much branched; stem and branches with short hairs, at least some tipped with yellow glands.  Leaves ± distinctly petioled, elliptic-ovate, 0.5-1.5 x 0.3-0.5 (elsewhere up to 7.5 x 5) cm, with obtuse to acute apex and ± decurrent base, dentate or ± deeply lobed hairy like branches especially on petiole and nerves.  Inflorescence of clusters of many flowers, not combining into distinct thyrses or panicles.  Tepals 5, narrowly oblanceolate, about 1.2 mm long, joined in lower half, concave and conspicuously keeled in upper half with truncately triangular crest, hairy, green, ovary with short style and 2 filamentous stigmas.  Fruit enveloped in tepals but not concealed at maturity, whitish, glandless; seed compressed globose and distinctly keeled along most of circumference, vertical or diagonal, about 0.6 mm in diameter, shiny dark brown"  (Henty, 1981; p. 21).

Habitat/ecology:  In Hawai‘i, "naturalized in relatively dry, disturbed sites, 0-1,200 m" (Wagner et al., 1999; p. 537).  In Papua New Guinea, "reported as a weed from an open village space at 500 m altitude and from tobacco cultivation in the Markham Valley"  (Henty, 1981; p. 23).

Propagation:  Seed

Native range:  Australia (Henty, 1981; p. 23).

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. 537)
State of Hawaii Hawaiian Islands	Kaho‘olawe Island	introduced invasive	Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 537)
State of Hawaii Hawaiian Islands	Kaua‘i Island	introduced invasive	Lorence, David H./Flynn, Tim (1997) (p. 10) Voucher cited: Carroll 2 (PTBG)
State of Hawaii Hawaiian Islands	Lāna‘i Island	introduced invasive	Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 537) Voucher cited: Munro 704 (BISH)
State of Hawaii Hawaiian Islands	Maui Island	introduced invasive	Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 537)
State of Hawaii Hawaiian Islands	Moloka‘i Island	introduced invasive	Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 537)
State of Hawaii Hawaiian Islands	Ni‘ihau Island	introduced invasive	Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 537)
State of Hawaii Hawaiian Islands	O‘ahu Island	introduced invasive	Staples, George W./Imada, Clyde T./Herbst, Derral R. (2003) (p. 10) Voucher cited: M. C. Neal & C. Hartt s.n. (BISH 618401)
Papua New Guinea Papua New Guinea (eastern New Guinea Island)	Papua New Guinea (eastern New Guinea Island)	introduced invasive	Henty, E. E., ed. (1981) (pp. 21-22)

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. (2011)
Australia Australia (continental)	Queensland	native	U.S. Dept. Agr., Agr. Res. Serv. (2011)

Additional information:
Additional online information about Chenopodium carinatum is available from the Hawaiian Ecosystems at Risk project (HEAR).

Information about Chenopodium carinatum as a weed (worldwide references) may be available from the Global Compendium of Weeds (GCW).

Taxonomic information about Chenopodium carinatum may be available from the Germplasm Resources Information Network (GRIN).

References:

Henty, E. E., ed. 1981. Handbooks of the flora of Papua New Guinea, vol. 2. Melbourne University Press, Melbourne. 276 pp.

Lorence, David H./Flynn, Tim. 1997. New naturalized plant records for Kaua‘i. In: Evenhuis, Neal L. and Miller, Scott, E., eds. Records of the Hawaii Biological Survey for 1996. Part 2: Notes. Bishop Museum Occasional Papers. 49:9-13.

Staples, George W./Imada, Clyde T./Herbst, Derral R. 2003. New Hawaiian plant records for 2001. In: Evenhuis, Neal L. and Eldredge, Lucius G., eds. Records of the Hawaii Biological Survey for 2001-2002. Part 2: Notes. Bishop Museum Occasional Papers. 74:7-21.

U. S. Government. 2011. Integrated Taxonomic Information System (ITIS) (on-line resource).

U.S. Dept. Agr., Agr. Res. Serv. 2011. National Genetic Resources Program. Germplasm Resources Information Network (GRIN). Online searchable database.

Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. 1999. Manual of the flowering plants of Hawaii. Revised edition. Bernice P. Bishop Museum special publication. University of Hawai‘i Press/Bishop Museum Press, Honolulu. 1919 pp. (two volumes).