Pacific Island Ecosystems at Risk (PIER)

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Brassica nigra
(L.) W.D.J.Koch, Brassicaceae
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Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Common name(s): [more details]

Chinese: hei jie

English: black mustard, shortpod mustard, true mustard

French: chou noir, moutarde noire

Hawaiian: mākeke

Japanese: kuro-garashi

Spanish: aleza, jeben, laparda, lujarda, mostada, mostaza negra

Habit:  herb

Description:  "Erect annual herbs 5-25 dm tall, branched above, sparsely hirsute, especially on lower parts of stem, or subglabrous.  Lower leaves deeply pinnatifid, with a large terminal lobe and a few small lateral ones, 10-20 cm long, 3-9 cm wide; cauline leaves gradually reduced, sessile, not clasping the stem.  Pedicels erect, 2-4 mm long; petals yellow, 7-8 mm long.  Siliques erect, appressed to the stem, 1-2 cm long, the beak sterile, 1-4 mm long.  Seeds dark reddish brown, globose, 1-1.3 mm in diameter, the surface finely reticulate"  (Wagner et al., 1999; p. 400).

Habitat/ecology:  In Hawai‘i, "naturalized in disturbed areas, especially along roadsides and in pastures" (Wagner et al., 1999; p. 400).

Propagation:  Seed

Native range:  "Eurasia, now widely naturalized" (Wagner et al., 1999; p. 400).

Presence:

Pacific
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
Chile (offshore islands)
Juan Fernández Islands
Isla Más a Tierra (Robinson Crusoe Island) extirpated
Skottsberg, Carl (1953) (p. 218)
Previously reported but seems to have disappeared.
Chile (offshore islands)
Juan Fernández Islands
Isla Más a Tierra (Robinson Crusoe Island) introduced
invasive
Atkinson, Rachel/Sawyer, John (2011)
Chile (offshore islands)
Juan Fernández Islands
Isla Más a Tierra (Robinson Crusoe Island) introduced
invasive
cultivated
Danton, Philippe/Perrier, Christophe/Martinez Reyes, Guido (2006) (p. 551)
French Polynesia
Marquesas Islands
Nuku Hiva (Nukahiva) Island introduced
cultivated
Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013)
Cultivée
State of Hawaii
Hawaiian Islands
Hawai‘i (Big) Island introduced
invasive
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 400)
State of Hawaii
Hawaiian Islands
Maui Island introduced
invasive
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 400)
State of Hawaii
Hawaiian Islands
O‘ahu Island introduced
invasive
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 400)
United States (other Pacific offshore islands)
Midway Atoll
Eastern Island introduced
invasive
Starr, Forest/Starr, Kim/Loope, Lloyd (2008) (pp. B-4)
United States (other Pacific offshore islands)
Midway Atoll
Midway Atoll introduced
invasive
Starr, Forest/Starr, Kim/Loope, Lloyd L. (2003) (p. 25)
Voucher cited: Starr & Martz 010526-1 (BISH)
United States (other Pacific offshore islands)
Midway Atoll
Sand Island introduced
invasive
Starr, Forest/Starr, Kim/Loope, Lloyd (2008) (pp. B-4)
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)
Australia (continental) introduced
invasive
National Herbarium of New South Wales (2013)
South Australia, Tasmania, Victoria, Western Australia
Naturalised
Australia
Australia (continental)
New South Wales introduced
invasive
National Herbarium of New South Wales (2013)
Naturalised
Australia
Australia (continental)
Queensland introduced
invasive
National Herbarium of New South Wales (2013)
Naturalised
Chile (continental)
Chile
Chile (Republic of) introduced
invasive
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Naturalized
China
China
China (People's Republic of) native
Zhengyi, Wu/Raven, Peter H./Deyuan, Hong (2013)
Slopes, steppe, field margins; 900-2800 m. Gansu, Jiangsu, Qinghai, Xinjiang, Xizang.
Ecuador (Mainland)
Ecuador
Ecuador (Republic of) (continental) introduced
invasive
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Naturalized
Guatemala
Guatemala
Guatemala (Republic of) introduced
invasive
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Naturalized
Japan
Japan
Japan (country) introduced
invasive
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Naturalized
Mexico
Mexico
Mexico (United Mexican States)   Hafliger, Toni J./Wolf, Matthias (1988) (p. 147)
New Zealand
New Zealand
New Zealand (country) introduced
invasive
Webb, C. J./Sykes, W. R./Garnock-Jones, P. J. (1988) (p. 406)
"A rare casual weed on waste land and among crops".
Perú
Perú
Perú (Republic of) introduced
invasive
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Naturalized
Vietnam
Vietnam
Vietnam (Socialist Republic of) introduced
invasive
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Naturalized


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This page was created on 3 MAR 2007 and was last updated on 8 APR 2007.