(L.) Cronquist, Asteraceae |
Present on Pacific Islands? yes
Primarily a threat at high elevations? no
Other Latin names: Erigeron canadensis L.
Common name(s): [more details]
Chinese: xiao peng cao |
English: Canada fleabane, Canadian fleabane, Canadian horseweed, blood-stanch, butterweed, colt's tail, fireweed, flea wort, fleabane, hairy horseweed, hogweed, horseweed, mare's tail, mule tail, pride weed, small-leaf horseweed |
Fijian: mandramandra |
French: herbe gandi, vergerette du Canada |
Hawaiian: lani wela |
Japanese: himemukashiyomogi |
Spanish: altabaca, canem bord, cola de zorra, hierba del caballo, jarilla, olivarda, venadillo, zamarraga |
Habit: herb
Description: "A slender erect herb, winter annual or biennial, with a long taproot; stem a few cm to more than 3 m in height, nearly smooth or bristly hairy, unbranched at base, branched near top with many small flower heads; leaves alternate but numerous, often appearing opposite, may be light or dark green depending on habitat, without petioles, basal and lower stem leaves 2.5 to 10 cm long, 1 cm wide, strap-shape, entire or toothed, medium and upper stem leaves smaller, sessile, entire, very narrow, soft hairy at first but becoming harsh on older leaves, some southern Africa types almost glabrous both surfaces but margins rigidly and shortly ciliate; flower heads small, numerous on many short branches at top of stem, about 5 mm in diameter, head or capitulum very fluffy at maturity; involucre composed of 2 or 3 series of very small, pointed, greenish bracts 2.5 to 5 mm long; receptacle flat, 1.2 to 2.5 mm broad when bare, ray florets very short, inconspicuous, usually concealed by slightly longer involucral bracts around each flower, greenish white to lavender, pistillate, more than 100 per head, about as long as disk florets; disk florets numerous, perfect, yellow; fruit a dry indehiscent achene, cylindrical, elongated, broadest above the middle, somewhat tapering toward scar that has attached light-colored collar, apex truncate, surface is longitudinally grooved and has scattered white hairs, color a greenish, yellowish brown, 1.3 mm long by 0.3 mm wide, pappus of 10 or up to 265 hairs, brownish yellow, 1.5 to 3 times longer than achene. The crushed leaves and other plant parts have the faint odor of carrots" (Holm et al., 1997; p. 228).
"Erect herb to 1" m tall; basal leaves oblanceolate; upper leaves linear, entire, ciliate at base, up to 10 cm long; heads numerous, filiform-pedunculate, in elongated axillary racemes combined into a terminal panicle; involucre 2.5-4 mm long, the bracts somewhat puberulent, with narrow scarious margins and a purplish spical spot; florets rather few, white, very small; achenes smooth, less than 1 mm long, the pappus 3 mm long" (Stone, 1970; p. 577).
Habitat/ecology: Especially common on limestone soils on Guam (Stone, 1970; p. 577). In Hawaii, "naturalized in relatively dry, disturbed areas" (Wagner et al., 1999; pp. 288, 1859). In Fiji, "from near sea level to 850 m, adventive and sometimes locally common on sandy soils near coast, sand dunes, and open grassy hills, in villages, gardens, and waste places, and along roadsides" (Smith, 1991; pp. 306-307). In Niue, "a common weed in plantations and elsewhere if the ground is exposed" (Sykes, 1970; p. 64).
Propagation: Wind-dispersed seed.
Native range: "Northeastern US to the Caribbean basin and Mexico, widely adventive elsewhere" (Smith, 1991; pp. 306-307).
Presence:
Pacific | |||
Country/Terr./St. & Island group |
Location |
Cited status &
Cited as invasive & Cited as cultivated & Cited as aboriginal introduction? |
Reference &
Comments |
Commonwealth of the Northern Mariana Islands (US)
Northern Mariana Islands |
Pagan Island |
introduced
|
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 285) |
Commonwealth of the Northern Mariana Islands (US)
Northern Mariana Islands |
Pagan Island |
introduced
invasive |
Fosberg, F. R./Falanruw, M. V. C./Sachet, M.-H. (1975) (p. 42)
Voucher cited: Moore 307 (US) |
Commonwealth of the Northern Mariana Islands (US)
Northern Mariana Islands |
Rota Island |
introduced
|
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 285) |
Commonwealth of the Northern Mariana Islands (US)
Northern Mariana Islands |
Rota Island |
introduced
invasive |
Space, James C./Waterhouse, Barbara/Denslow, Julie S./Nelson, Duane (2000) (p. Voucher specimen)
var. pusilla. Voucher: BMW 5813 (BISH, BRI) |
Commonwealth of the Northern Mariana Islands (US)
Northern Mariana Islands |
Tinian Island |
introduced
|
Raulerson, L. (2006) (p. 67) |
Commonwealth of the Northern Mariana Islands (US)
Saipan |
Saipan Island |
introduced
|
Raulerson, L. (2006) (p. 67) |
Cook Islands
Southern Cook Islands |
Mauke Island |
McCormack, Gerald (2013)
? |
|
Ecuador (Galápagos Islands)
Fernandina Group |
Fernandina Island |
introduced
invasive |
Charles Darwin Foundation (2008) |
Ecuador (Galápagos Islands)
Isabela Group |
Isabela Island |
introduced
invasive |
Charles Darwin Foundation (2008) |
Ecuador (Galápagos Islands)
Isabela Group |
Volcán Alcedo, Isabela Island |
introduced
invasive |
Charles Darwin Foundation (2008) |
Ecuador (Galápagos Islands)
Isabela Group |
Volcán Sierra Negra, Isabela Island |
introduced
invasive |
Charles Darwin Foundation (2008) |
Ecuador (Galápagos Islands)
San Cristóbal Group |
San Cristóbal Island |
introduced
invasive |
Charles Darwin Foundation (2008) |
Ecuador (Galápagos Islands)
Santa Cruz Group |
Santa Cruz Island |
introduced
invasive |
Charles Darwin Foundation (2008) |
Federated States of Micronesia
Yap Islands |
Ulithi Atoll |
introduced
|
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 285) |
Federated States of Micronesia
Yap Islands |
Yap (Waqab) Island | Swarbrick, John T. (1997) (p. 90) | |
Fiji
Fiji Islands |
Viti Levu Island |
introduced
invasive |
Smith, Albert C. (1991) (pp. 306-307)
var. pusilla. Vouchers cited: DA 11761, DA 11410, Greenwood 1164, DA 2920, Greenwood 921, DA 10672, DA 11329 |
Guam
Guam Island |
Guam Island |
introduced
invasive |
Stone, Benjamin C. (1970) (p. 577)
Vouchers cited: Stone 3788 (GUAM), Stone 4239 (GUAM) |
Guam
Guam Island |
Guam Island |
introduced
|
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 285) |
State of Hawaii
Hawaiian Islands |
Hawaii (Big) Island |
introduced
invasive |
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 288) |
State of Hawaii
Hawaiian Islands |
Kahoolawe Island |
introduced
invasive |
Starr, Forest/Starr, Kim/Loope, Lloyd L. (2006) (p. 32)
Var. pusilla (Nutt.) Cronq. Voucher cited: Starr, Starr, Higashino, Bruch & Bryce 050208-2 (BISH) |
State of Hawaii
Hawaiian Islands |
Kauai Island |
introduced
invasive |
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 288) |
State of Hawaii
Hawaiian Islands |
Lānai Island |
introduced
invasive |
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 288) |
State of Hawaii
Hawaiian Islands |
Maui Island |
introduced
invasive |
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 288) |
State of Hawaii
Hawaiian Islands |
Molokai Island |
introduced
invasive |
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 288) |
State of Hawaii
Hawaiian Islands |
Niihau Island |
introduced
invasive |
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 288) |
State of Hawaii
Hawaiian Islands |
Oahu Island |
introduced
invasive |
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 288) |
Japan (offshore islands)
Ogasawara (Bonin) Islands |
Bonin (Ogasawara) Islands |
introduced
|
Kato, Hidetoshi (2007) |
Marshall Islands
Ralik Chain |
Bikini (Pikinni) Atoll |
introduced
invasive |
Whistler, W. A./Steele, O. (1999) (p. 34) |
Marshall Islands
Ralik Chain |
Bikini (Pikinni) Atoll |
introduced
|
Fosberg, F. R. (1988) (p. 15) |
Marshall Islands
Ralik Chain |
Bikini (Pikinni) Atoll |
National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (1985) (voucher ID: PTBG 43320)
Taxon name on voucher: Conyza canadensis |
|
Marshall Islands
Ralik Chain |
Enewetak (Ãnewetak, Eniwetok) Atoll |
introduced
invasive |
Whistler, W. A./Steele, O. (1999) (p. 34) |
Marshall Islands
Ralik Chain |
Kwajalein (Kuwajleen) Atoll |
introduced
invasive |
Whistler, W. A./Steele, O. (1999) (p. 34)
Vouchers cited: Fosberg 31169, Fosberg 36646, Herbst 8887, Whistler 11248 |
Marshall Islands
Ralik Chain |
Kwajalein (Kuwajleen) Atoll |
introduced
invasive |
Fosberg, F. R. (1955) (p. 21)
Voucher cited: Fosberg 31169 (US) |
Marshall Islands
Ratak Chain |
Arno Atoll |
introduced
invasive |
Vander Velde, Nancy/Vander Velde, Brian (2007) (p. 5)
"Common; ruderal areas". |
Marshall Islands
Ratak Chain |
Majuro (Mãjro) Atoll |
introduced
invasive |
Vander Velde, Nancy (2003) (p. 70) |
Marshall Islands
Ratak Chain |
Majuro (Mãjro) Atoll |
introduced
|
Fosberg, F. Raymond (1990) (p. 38) |
Marshall Islands
Ratak Chain |
Maloelap Atoll |
Imada, Clyde (2006)
var. pusilla (Nutt.) Cronq. |
|
Marshall Islands
Ratak Chain |
Mili (Mile) Atoll |
introduced
invasive |
Vander Velde, Nancy/Vander Velde, Brian (2010) (p. A10)
Common to abundant; in fields and ruderal areas Mili, near former residences Tokewa, Nallo. |
Marshall Islands
Ratak Chain |
Wotje (Wõjjã) Atoll |
introduced
|
Vander Velde, Nancy/Vander Velde, Brian (2009) (p. 1)
var. pusila (Nutt.) Cronq. Voucher cited: Vander Velde 0513200915 |
Marshall Islands
Ratak Chain |
Wotje (Wõjjã) Atoll |
National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (2009) (voucher ID: PTBG 49771)
Taxon name on voucher: Conyza canadensis var. pusilla |
|
New Caledonia
New Caledonia Archipelago |
Île Grande Terre |
introduced
invasive |
Tassin, Jacques (2005) |
New Caledonia
New Caledonia Archipelago |
Île Grande Terre |
introduced
invasive |
MacKee, H. S. (1994) (p. 34)
Vouchers cited: MacKee 7986, MacKee 45473, MacKee 45808 |
Niue
Niue |
Niue Island |
introduced
invasive |
Sykes, W. R. (1970) (p. 64)
Voucher cited: CHR 170429 |
Niue
Niue |
Niue Island |
introduced
invasive |
Whistler, W. A. (1988) (p. 9) |
Niue
Niue |
Niue Island |
introduced
invasive |
Space, James C./Waterhouse, Barbara M./Newfield, Melanie/Bull, Cate (2004) (p. 41) |
Palau
Palau (Belau ) (main island group) |
Angaur (Ngeaur) Island |
introduced
invasive |
Space, James C./Waterhouse, Barbara/Miles, Joel E./Tiobech, Joseph/Rengulbai, Kashgar (2003) (p. 103) |
Palau
Palau (Belau ) (main island group) |
Babeldaob Island |
introduced
|
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 285) |
Palau
Palau (Belau ) (main island group) |
Babeldaob Island |
introduced
invasive |
Space, James C./Waterhouse, Barbara/Miles, Joel E./Tiobech, Joseph/Rengulbai, Kashgar (2003) (p. 100) |
Palau
Palau (Belau ) (main island group) |
Babeldaob Island |
introduced
invasive |
Space, James C./Lorence, David H./LaRosa, Anne Marie (2009) (p. 53) |
Palau
Palau (Belau ) (main island group) |
Babeldaob Island |
Beleu National Museum (Republic of Palau. Koror.) (2007) (voucher ID: BNM 4402)
Taxon name on voucher: Conyza canadensis (L.) var. pusilla (Nutt.) Cronq. |
|
Palau
Palau (Belau ) (main island group) |
Babeldaob Island |
Beleu National Museum (Republic of Palau. Koror.) (1996) (voucher ID: BNM 26367)
Taxon name on voucher: Conyza canadensis (L.) Cronq. |
|
Palau
Palau (Belau ) (main island group) |
Babeldaob Island |
National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (2007) (voucher ID: PTBG 48179)
Taxon name on voucher: Conyza canadensis var. pusilla |
|
Palau
Palau (Belau ) (main island group) |
Kayangel (Ngcheangel) Island | Wagner, W. L./ Herbst, D. R./Weitzman, A./Lorence, D.H. (2013) | |
Palau
Palau (Belau ) (main island group) |
Koror (Oreor) Island |
Beleu National Museum (Republic of Palau. Koror.) (1991) (voucher ID: BNM 99999995)
Taxon name on voucher: Conyza canadensis |
|
Palau
Palau (Belau ) (main island group) |
Ngercheu Island |
introduced
invasive |
Space, James C./Waterhouse, Barbara/Miles, Joel E./Tiobech, Joseph/Rengulbai, Kashgar (2003) (p. 108)
Carp Resort |
Palau
Palau (Belau ) (main island group) |
Peleliu (Beliliou) Island |
introduced
|
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 285) |
Palau
Palau (Belau ) (main island group) |
Peleliu (Beliliou) Island |
introduced
invasive |
Space, James C./Waterhouse, Barbara/Miles, Joel E./Tiobech, Joseph/Rengulbai, Kashgar (2003) (p. 106) |
Palau
Palau (Belau ) (main island group) |
Peleliu (Beliliou) Island |
introduced
invasive |
Space, James C./Lorence, David H./LaRosa, Anne Marie (2009) (p. 53)
Voucher: Lorence 9770 (PTBG, BISH, BNM, NY, TAMU, US) |
Palau
Palau (Belau ) (main island group) |
Peleliu (Beliliou) Island |
Beleu National Museum (Republic of Palau. Koror.) (1968) (voucher ID: BNM 256)
Taxon name on voucher: Conyza canadensis (L.) Cronq. |
|
Palau
Palau (Belau ) (main island group) |
Peleliu (Beliliou) Island |
Beleu National Museum (Republic of Palau. Koror.) (1967) (voucher ID: BNM 254)
Taxon name on voucher: Conyza canadensis (L.) Cronq. |
|
Palau
Palau (Belau ) (main island group) |
Peleliu (Beliliou) Island |
Beleu National Museum (Republic of Palau. Koror.) (1967) (voucher ID: BNM 255)
Taxon name on voucher: Conyza canadensis |
|
Palau
Palau (Belau ) (main island group) |
Peleliu (Beliliou) Island |
National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (2008) (voucher ID: PTBG 62)
Taxon name on voucher: Conyza canadensis (L.) Cronquist |
|
Palau
Rock Islands (Chelbacheb) |
Ngerchong Island |
introduced
invasive |
Space, James C./Waterhouse, Barbara/Miles, Joel E./Tiobech, Joseph/Rengulbai, Kashgar (2003) (p. 108) |
Palau
Rock Islands (Chelbacheb) |
Ngerchong Island |
introduced
invasive |
Space, James C./Lorence, David H./LaRosa, Anne Marie (2009) (p. 53) |
Papua New Guinea
Papua New Guinea (eastern New Guinea Island) |
Papua New Guinea (eastern New Guinea Island) | Holm, Leroy/Doll, Jerry/Holm, Eric/Pancho, Jaun/Herberger, James (1997) (p. 226) | |
Philippines
Philippine Islands |
Philippine Islands | Holm, Leroy/Doll, Jerry/Holm, Eric/Pancho, Jaun/Herberger, James (1997) (p. 226) | |
Tonga
Tongatapu Group |
Tongatapu Island |
Whistler, W. A. (1992) (p. 8)
Voucher cited: Soakai 917 |
|
United States (other Pacific offshore islands)
Midway Atoll |
Eastern Island |
introduced
invasive |
Starr, Forest/Starr, Kim/Loope, Lloyd (2008) (pp. B-6)
var. pusila |
United States (other Pacific offshore islands)
Midway Atoll |
Midway Atoll |
introduced
invasive |
Wagner, Warren L./Herbst, Derral R. (1995) (p. 16)
var. pusilla (Nutt.) Cronq.; voucher cited: Herbst & Takeuchi 9072 (BISH) |
United States (other Pacific offshore islands)
Midway Atoll |
Sand Island |
introduced
invasive |
Starr, Forest/Starr, Kim/Loope, Lloyd (2008) (pp. B-6)
var. pusila |
United States (other Pacific offshore islands)
Midway Atoll |
Spit Island |
introduced
invasive |
Starr, Forest/Starr, Kim/Loope, Lloyd (2008) (pp. B-6)
var. pusila |
United States (other Pacific offshore islands)
Wake Islands |
Wake Island |
introduced
|
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 285) |
United States (other Pacific offshore islands)
Wake Islands |
Wake Island |
introduced
invasive |
Fosberg, F. R./Sachet, M.-H. (1969) (p. 15)
Vouchers cited: Sachet 897a (US), Fosberg 43536 (US), McFarlane 75 (US), McFarlane 79 (US) |
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 |
introduced
invasive |
National Herbarium of New South Wales (2013)
Naturalised |
Australia
Australia (continental) |
Australia (continental) |
introduced
invasive |
National Herbarium of New South Wales (2013)
South Australia, Tasmania, Victoria, Western Australia Naturalised |
Australia
Australia (continental) |
Queensland |
introduced
invasive |
National Herbarium of New South Wales (2013)
Naturalised |
British Columbia (province of Canada)
Province of British Columbia |
Canada (British Columbia) |
native
|
U.S. Dept. Agr., Agr. Res. Serv. (2013) |
Central America
Central America (Pacific rim) |
Costa Rica (Republic of) |
native
|
U.S. Dept. Agr., Agr. Res. Serv. (2013) |
Central America
Central America (Pacific rim) |
El Salvador (Republic of) |
native
|
U.S. Dept. Agr., Agr. Res. Serv. (2013) |
Central America
Central America (Pacific rim) |
Guatemala (Republic of) |
native
|
U.S. Dept. Agr., Agr. Res. Serv. (2013) |
Central America
Central America (Pacific rim) |
Honduras (Republic of) |
native
|
U.S. Dept. Agr., Agr. Res. Serv. (2013) |
Central America
Central America (Pacific rim) |
Nicaragua (Republic of) |
native
|
U.S. Dept. Agr., Agr. Res. Serv. (2013) |
Central America
Central America (Pacific rim) |
Panama (Republic of) |
native
|
U.S. Dept. Agr., Agr. Res. Serv. (2013) |
China
China |
China (People's Republic of) |
introduced
invasive |
Zhengyi, Wu/Raven, Peter H./Deyuan, Hong (2013)
Common weed of open places, field margins, roadsides, dry streamsides; sea level to 3000 m. Anhui, Fujian, Gansu, Guangdong, Guangxi, Guizhou, Hebei, Heilongjiang, Henan, Hubei, Hunan, Jiangsu, Jiangxi, Jilin, Liaoning, Shaanxi, Shandong, Shanxi, Sichuan, Xinjiang, Xizang, Yunnan, Zhejiang. |
China
China |
Hong Kong |
introduced
invasive |
Wu, Te-lin (2001) (p. 278)
In wasteland. |
Indonesia
Indonesia |
Indonesia (Republic of) | Holm, Leroy/Doll, Jerry/Holm, Eric/Pancho, Jaun/Herberger, James (1997) (p. 226) | |
Japan
Japan |
Japan |
introduced
invasive |
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Naturalized |
Japan
Japan |
Japan |
introduced
|
Mito, Toshikazu/Uesugi, Tetsuro (2004) (p. 190)
var. canadensis and var. glabratus Gray |
North Korea
North Korea |
North Korea (Democratic People's Republic of) |
introduced
invasive |
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Naturalized |
South Korea
South Korea |
South Korea (Republic of) |
introduced
invasive |
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Naturalized |
Mexico
Mexico |
Mexico (United Mexican States) |
native
|
U.S. Dept. Agr., Agr. Res. Serv. (2013) |
New Zealand
New Zealand |
New Zealand (country) |
introduced
invasive |
Webb, C. J./Sykes, W. R./Garnock-Jones, P. J. (1988) (p. 190)
"Waste places, dry open gullies". |
South America (Pacific rim)
South America (Pacific rim) |
Chile (Republic of) | Holm, Leroy/Doll, Jerry/Holm, Eric/Pancho, Jaun/Herberger, James (1997) (p. 226) | |
South America (Pacific rim)
South America (Pacific rim) |
Colombia | Holm, Leroy/Doll, Jerry/Holm, Eric/Pancho, Jaun/Herberger, James (1997) (p. 226) | |
South America (Pacific rim)
South America (Pacific rim) |
Ecuador (Republic of) (continental) |
introduced
invasive |
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Naturalized |
South America (Pacific rim)
South America (Pacific rim) |
Perú (Republic of) |
introduced
invasive |
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Naturalized |
Taiwan
Taiwan Island |
Taiwan Island |
introduced
invasive |
Ching-I Peng, ed. (2013)
"From sea level to 800 m". |
Thailand
Thailand |
Thailand (Kingdom of) | Holm, Leroy/Doll, Jerry/Holm, Eric/Pancho, Jaun/Herberger, James (1997) (p. 226) | |
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) |
Vietnam
Vietnam |
Vietnam (Socialist Republic of) | Holm, Leroy/Doll, Jerry/Holm, Eric/Pancho, Jaun/Herberger, James (1997) (p. 226) |
Indian Ocean | |||
Country/Terr./St. & Island group |
Location |
Cited status &
Cited as invasive & Cited as cultivated & Cited as aboriginal introduction? |
Reference &
Comments |
British Indian Ocean Territory
Chagos Archipelago |
Diego Garcia Island |
introduced
invasive |
Topp, J. M. W. (1988) (p. 9) |
British Indian Ocean Territory
Chagos Archipelago |
Diego Garcia Island |
introduced
invasive |
Whistler, W. Arthur (1996) (p. 26) |
British Indian Ocean Territory
Chagos Archipelago |
Diego Garcia Island |
National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (1995) (voucher ID: PTBG 37887)
Taxon name on voucher: Conyza canadensis (L.) Cronq. var. pusilla (Nutt.) Cronq. |
|
La Réunion (France)
La Réunion Island |
La Réunion Island |
introduced
invasive |
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Naturalized |
Mauritius
Mautitius Islands (Mauritius and Rodrigues) |
Mauritius Island |
introduced
invasive |
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Naturalized |
Also reported from | |||
Country/Terr./St. & Island group |
Location |
Cited status &
Cited as invasive & Cited as cultivated & Cited as aboriginal introduction? |
Reference &
Comments |
Canada
Canada |
Canada |
native
|
U.S. Dept. Agr., Agr. Res. Serv. (2013) |
United States (continental except west coast)
United States (other states) |
United States (other states) |
native
|
U.S. Dept. Agr., Agr. Res. Serv. (2013) |
Comments: var. pusilla in Micronesia (Fosberg et al., 1979; p. 285).
Control: If you know of control methods for Conyza canadensis, please let us know.