Pacific Island Ecosystems at Risk (PIER)

  [   PIER species lists  ]   [   PIER home  ]

Bidens bipinnata
L., Asteraceae
Click on an image for links to BIGGER PICTURES


Present on Pacific Islands?  no

Primarily a threat at high elevations?  no

Common name(s): [more details]

Chinese: po po zhen

English: bipinnate beggar's tick, cobbler's pegs, hemlock beggar-ticks, Spanish-needles

French: bident bipenné, herbe à aiguilles, herbe aiguille

Habit:  herb

Description:  "Stems 25-85 cm tall, erect, tetragonous, slightly puberulous on upper part, branched. Median cauline leaves opposite, 11-19 cm long, more of less pubescent on both surfaces (petioles 3.5-5 cm long, wingless), bipinnatipartite, lower segments often 2- or 3-cleft or pinnatifid, terminal segments narrow, acuminate, few-dentate; upper leaves gradually smaller, uppermost alternate, small, pinnati-partite. Heads 6-10 mm broad; peduncles 1.8-8.5 cm long. Involucre cupuliform, bracts 5-7, lanceolate, 2.5 mm long to 5 mm long in fruit, linear-oblong, apex obtuse or acute, outer palea oblong, 3.5-4 mm long, to 6-8 mm long in fruit, obtuse, inner ones narrowly obtuse, 5 mm long to 12 mm long in fruit. Ray florets 1-3, yellow, 5-6 mm long. Disc florets fertile, corolla yellow, tubular, 4.5 mm long, 5-lobed. Achenes long linear, 10-12x1 mm, 3- or 4-angular, more or less short strigose. Pappus awns 3 or 4, 3-4 mm long"  (Digital Flora of Taiwan).

"Glabrous or minutely hairy annual 3-17 dm; leaves 4-20 cm including the 2-5 cm petiole, mostly 2-3 times pinnately dissected, the ultimate segments tending to be rounded; heads narrow, disciform, the disk only 4-6 mm wide at anthesis, the short, ochroleucous rays not surpassing the disk; outer involucral bracts 7-10, linear, ± acute, not evidently expanded upwards, shorter than the inner; achenes linear, tetragonal, narrowed above, often sparsely hairy, 10-13 mm, or some of the outer shorter; pappus of (2) 3 or 4 yellowish awns"  (Gleason & Cronquist, 1963; p. 541).

"Annual, 0.3-1.5 m tall; stems ± square; leaves 2-3 times pinnately dissected or compound with numerous segments, the segments deltoid-lanceolate; petioles 20-50 mm long; outer phyllaries 7-10, linear, 3-7 mm long; inner phyllaries 5-9 mm long; achenes linear, quadrangular, usually 10-18 mm long, 0.6-1 mm in diameter; pappus awns 2-4 mm long"  (Diggs et al., 1999; p. 326).

Habitat/ecology:  In Texas (U.S.), "in moist soils" (Diggs et al., 1999; p. 326).  "Moist to fairly dry, disturbed habitats"  (Gleason & Cronquist, 1963; p. 541).

Propagation:  Seed

Native range:  "Worldwide weed, probable origin neotropics & subtropics" (GRIN).

Presence:

Pacific
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
Philippines
Philippine Islands
Philippine Islands   Merrill, Elmer D. (1923) (p. 613)
On dry open slopes, altitude about 1,300 m.
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
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Naturalized
Cambodia
Cambodia
Cambodia (Kingdom of) introduced
invasive
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Naturalized
China
China
China (People's Republic of) introduced
invasive
Zhengyi, Wu/Raven, Peter H./Deyuan, Hong (2013)
Fields, forests, disturbed wettish sites; below 1800 (-3000) m. Anhui, Fujian, Gansu, Guangdong, Guangxi, Hebei, Jiangsu, Jiangxi, Jilin, Liaoning, Nei Mongol, Shaanxi, Shandong, Shanxi, Sichuan, Yunnan, Zhejiang.
China
China
Hong Kong native
Wu, Te-lin (2001) (p. 276)
In wasteland.
Japan
Japan
Japan (country) introduced
Mito, Toshikazu/Uesugi, Tetsuro (2004) (p. 189)
South Korea
South Korea
South Korea (Republic of) introduced
invasive
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Naturalized
Taiwan
Taiwan Island
Taiwan Island probably introduced
invasive
Ching-I Peng, ed. (2013)
"Usually in the south, along roadside and in waste grounds".
Thailand
Thailand
Thailand (Kingdom of) introduced
invasive
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Naturalized
United States (west coast)
United States (west coast states)
USA (California) native
U.S. Dept. Agr., Nat. Res. Cons. Serv. (2013)
Vietnam
Vietnam
Vietnam (Socialist Republic of) 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 (except British Colombia)
Canada
Canada (country) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
New Brunswick, Ontario
United States (continental except west coast)
United States (other states)
United States (other states) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)


Need more info? Have questions? Comments? Information to contribute? Contact PIER! (pier@hear.org)

  [   PIER species lists  ]   [   PIER home  ]

This page was created on 13 APR 2005 and was last updated on 6 DEC 2010.