(Willd.) Cabrera, Asteraceae |
Present on Pacific Islands? yes
Primarily a threat at high elevations? no
Other Latin names: Gnaphalium pensylvanicum Willd.
Common name(s): [more details]
Chinese: shi ye he guan shu qu cao |
English: Pennsylvania cudweed |
Habit: herb
Description: "Annual, 10-40 cm tall, usually branched only at base; stems 1-few, erect or ascending. Basal leaves mostly 0 at flowering, sometimes present and withered. Lower cauline leaves apetiolate, sparsely tomentose on upper surface, densely tomentose on lower, more or less concolorous to somewhat discolourous, plane, usually obovate and long-cuneate, sometimes oblanceolate, obtuse to acute, mucronate, flat or slightly undulate, (10)-20-40-(60) x 3-8-(12) mm, upper cauline leaves similar but smaller, narrower and broader based, sometimes folded. Capitula in dense terminal and axillary clusters; clusters usually forming dense terminal spikes at ends of branches and scattered below. Involucral bracts oblong, obtuse to apiculate, 2.5-3 mm long; stereome green; lamina pale brown, gap and margins clear; outer bracts almost covered by hairs. Achenes minutely papillate, 0.4-0.5 mm long" (Webb et al., 1988; pp. 238-239).
Description from the Flora of China online.
Description from the Flora of North America online.
Habitat/ecology: On Raoul Island, "waste places coastal sites, scrubland" (Webb et al., 1988; pp. 238-239).
Propagation: Seed
Native range: Bahamas, Cuba, Jamaica, Central and South America; naturalized elsewhere; exact native and naturalized range uncertain owing to confusion with other taxa (GRIN).
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 |
Hawaii (Big) Island |
introduced
invasive |
Alford, Mac H. (2012) (p. 3)
Vouchers cited: Fagerlund & Mitchell 73 (BISH), Funk s.n. (BISH), Herbst 5295 (BISH), Higashino et al. 10326 (BISH), Hosaka 2080 (BISH), Hosaka 2301 (BISH), Rock 3133 (BISH), Rock 4619 (BISH), Rock 4621 (BISH), Warshauer & McEldowney 2052 (BISH) |
State of Hawaii
Hawaiian Islands |
Kahoolawe Island |
introduced
invasive |
Alford, Mac H. (2012) (p. 3)
Vouchers cited: Char 78.015 (BISH), Clarke & Corn 366 (BISH), Cuddihy & Char 326 (BISH), Cuddihy & Char 353 (BISH), Cuddihy & Char 355 (BISH) |
State of Hawaii
Hawaiian Islands |
Kauai Island |
introduced
invasive |
Alford, Mac H. (2012) (pp. 3-4)
Vouchers cited: Corn ESP 177 (BISH), Flynn 791 (BISH), Wagner et al. 5157 (BISH) |
State of Hawaii
Hawaiian Islands |
Lānai Island |
introduced
invasive |
Alford, Mac H. (2012) (p. 4)
Vouchers cited: Degener & Degener 28408 (BISH), Starr 060406-15 (BISH) |
State of Hawaii
Hawaiian Islands |
Niihau, Lehua Islet |
introduced
invasive |
Wood, K. R./LeGrande, Maya (2006) (p. 20)
Voucher cited: Flynn et al. 4852 (BISH, PTBG). Misidentified as Gamochaeta purpurea (L.) Cabrera per Alford (2012). |
State of Hawaii
Hawaiian Islands |
Niihau, Lehua Islet |
introduced
invasive |
Alford, Mac H. (2012) (p. 4)
Voucher cited: Flynn et al. 4852 (BISH, PTBG) |
State of Hawaii
Hawaiian Islands |
Maui Island |
introduced
invasive |
Alford, Mac H. (2012) (p. 4)
Vouchers cited: Hosaka 1797 (BISH), Oppenheimer et al H10211 (BISH) |
State of Hawaii
Hawaiian Islands |
Molokai, Mokapu Islet |
introduced
invasive |
Alford, Mac H. (2012) (p. 4)
Voucher cited: Oppenheimer & Penniman H40918 (BISH) |
State of Hawaii
Hawaiian Islands |
Molokai Island |
introduced
invasive |
Alford, Mac H. (2012) (p. 4)
Vouchers cited: Fosberg 29561 (BISH), Hosaka 1847 (BISH) |
State of Hawaii
Hawaiian Islands |
Maui, Molokini Islet |
introduced
invasive |
Alford, Mac H. (2012) (p. 4)
Vouchers cited: Hobdy 1239 (BISH), Starr 060405-09 (BISH) |
State of Hawaii
Hawaiian Islands |
Oahu Island |
introduced
invasive |
Alford, Mac H. (2012) (p. 4)
Vouchers cited: Degener 18446 (BISH, US), Degener & Topping 11119 (UC, US), Egler 37-55 (BISH), Egler 37-241 (BISH), Fosberg 9475 (BISH), Fosberg 10562 (BISH), Fosberg 12939 (BISH), Herbst & Ishikawa 5269 (BISH), St. John 10406 (BISH), Swarbrick H-17 (BISH), Topping 3071 (UC, US) |
Japan (offshore islands)
Ogasawara (Bonin) Islands |
Bonin (Ogasawara) Islands |
introduced
|
Kato, Hidetoshi (2007)
As Gnaphalium pensylvanicum Willd. |
New Caledonia
New Caledonia |
New Caledonia Islands | Swarbrick, John T. (1997) (p. 92) | |
New Zealand (offshore islands)
Kermadec Islands |
Raoul Island |
introduced
invasive |
Webb, C. J./Sykes, W. R./Garnock-Jones, P. J. (1988) (p. 238)
As Gnaphalium pensylvanicum Willd. "Waste places, coastal sites, scrubland, local". |
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) |
Queensland |
introduced
invasive |
National Herbarium of New South Wales (2013)
Naturalised |
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) |
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) |
China
China |
China (People's Republic of) |
introduced
invasive |
Zhengyi, Wu/Raven, Peter H./Deyuan, Hong (2013) |
China
China |
Hong Kong |
introduced
invasive |
Wu, Te-lin (2001) (p. 282)
As Gnaphalium pensylvanicum Willd. In wasteland. |
Japan
Japan |
Japan |
introduced
|
Mito, Toshikazu/Uesugi, Tetsuro (2004) (p. 190)
As Gnaphalium pensylvanicum Willd. |
Mexico
Mexico |
Mexico (United Mexican States) |
native
|
U.S. Dept. Agr., Agr. Res. Serv. (2013) |
Taiwan
Taiwan Island |
Taiwan Island |
introduced
invasive |
Zhengyi, Wu/Raven, Peter H./Deyuan, Hong (2013) |
United States (west coast)
United States (west coast states) |
USA (California) |
native
|
U.S. Dept. Agr., Nat. Res. Cons. Serv. (2013) |
Indian Ocean | |||
Country/Terr./St. & Island group |
Location |
Cited status &
Cited as invasive & Cited as cultivated & Cited as aboriginal introduction? |
Reference &
Comments |
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 |
United States (continental except west coast)
United States (other states) |
United States (other states) |
native
|
U.S. Dept. Agr., Nat. Res. Cons. Serv. (2013)
AL, DC, GA, HI, LA, MS, NC, OK, PA, SC, TX, VA |
United States (continental except west coast)
United States (other states) |
USA (Florida) |
native
|
U.S. Dept. Agr., Nat. Res. Cons. Serv. (2013) |
Control: If you know of control methods for Gamochaeta pensylvanica, please let us know.