Crotalaria verrucosa L., Fabaceae

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Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Other Latin names:  Crotalaria angulosa Lam.

Common name(s): [more details]

Chinese: da ye ye bai he, duo you zhu shi dou

English: blue rattleweed, blue-flower rattlepod, purple popbush, shack-shack, tooth-leaf rattlepod, tooth-leaved rattlepod, warty crotalaria, warty rattlebox

French: cascavelle à fleurs bleues, cascavelle bleue

Spanish: cascabelito, chochito

Habit:  herb

Description:  "Herbs, erect, 50-100 cm tall. Branches 4-angled, glabrescent. Stipules leaflike, ovate-falcate, 5-8 mm. Leaves simple; petiole 3-5 mm; leaf blade ovate to elliptic, 10-15 x 3-5 cm, thinly membranous, abaxially densely pubescent, adaxially glabrous, base broadly cuneate, apex acuminate. Racemes terminal, 10-20-flowered; bracts linear, ca. 1 mm. Pedicel 3-4 mm; bracteoles inserted apically from middle of pedicel. Calyx subcampanulate, 8-10 mm, 5-lobed; lobes lanceolate, slightly longer than tube. Corolla pale yellow, white, or often tinged blue; standard orbicular to obovate, 1-1.8 cm, base with 2 appendages; wings oblong, 1-1.6 cm; keel ± as long as wings, exserted beyond calyx, rounded with an incurved, fairly shortly twisted beak. Ovary subsessile, pilose on apical part. Legume oblong, 2-4 cm, 10-12-seeded, pubescent. Seeds nearly smooth to papillose, shiny"  (Flora of China online).

Habitat/ecology:  "Uncommon on roadsides and in waste places" (Whistler, 1988; p. 23). "Adventive on Niue" (Sykes, 1970; p. 149).  In New Caledonia, "récolté une seule fois" (MacKee, 1994; p. 82).

Propagation:  Seed

Native range:  "Native of Asia now widely naturalized in the tropics." (Howard, 1988; pp. 472-473).

Presence:

Pacific
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
Cook Islands Cook Islands	Cook Islands		McCormack, Gerald (2013)
French Polynesia Gambier Islands	Mangareva (Gambier) Island	introduced invasive	Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013) Voucher cited: B. Huguenin s.n. (PAP) Adventice
French Polynesia Society Islands	Mopelia (Mapetia, Maupiha‘a, Maupihoa, Mopiha‘a) Atoll	introduced invasive	Sachet, M.-H. (1983) (p. 28) Voucher cited: Sachet 935 (US)
French Polynesia Society Islands	Raiatea (Havai) Island	introduced invasive	Welsh, S. L. (1998) (p. 146) Vouchers cited: Florence 3519, BRY 26679
French Polynesia Society Islands	Raiatea (Havai) Island	introduced invasive	Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013) Vouchers cited: J. Florence 3519 (PAP), P. Morat 6930 (PAP) Adventice
French Polynesia Society Islands	Tahiti Island	introduced invasive	Welsh, S. L. (1998) (p. 146) Voucher cited: Sachet 935
French Polynesia Society Islands	Tahiti Island	introduced invasive	Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013) Vouchers cited: J. Florence 3108 (PAP), J. Florence 7716 (PAP), W.A. Whistler & M. Guérin 29 (PAP), J.-N. Maclet 125 (PAP) Adventice
French Polynesia Tuamotu Archipelago	Rangiroa (Rairoa) Atoll	introduced invasive	Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013) Voucher cited: J. Florence 10011 (PAP) Adventice
French Polynesia Tuamotu Archipelago	Tikehau (Tikahau) Atoll	introduced invasive	Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013) Voucher cited: J. Florence 7108 (PAP) Adventice
State of Hawaii Hawaiian Islands	Moloka‘i Island	introduced	Wester, Lyndon (1992) (p. 138)
State of Hawaii Hawaiian Islands	O‘ahu Island	introduced invasive	Wagner, Warren L./Herbst, Derral R. (1995) (p. 19) Vouchers cited: Fosberg & Evans 58853 (BISH), A.F. Judd 53 (BISH), Inafuku s.n. (BISH), A.J. Mangelsdorf s.n. (BISH)
New Caledonia New Caledonia	New Caledonia Islands		Swarbrick, John T. (1997) (p. 90)
New Caledonia New Caledonia	New Caledonia Islands	introduced	MacKee, H. S. (1994) (p. 82) Voucher cited: Pancher s.n. s.loc.
New Caledonia New Caledonia Archipelago	Île Grande Terre	introduced invasive	Tassin, Jacques (2005)
Niue Niue	Niue Island	introduced	Sykes, W. R. (1970) (p. 149) Voucher cited: CHR 150542
Niue Niue	Niue Island	introduced invasive	Whistler, W. A. (1988) (p. 23)
Niue Niue	Niue Island	introduced invasive	Yuncker, T. G. (1943) (p. 61) Voucher cited: Yuncker 9748 (BISH) "Occasional along roadsides and in waste areas".
Niue Niue	Niue Island	introduced invasive	Space, James C./Waterhouse, Barbara M./Newfield, Melanie/Bull, Cate (2004) (p. 14)
Papua New Guinea Bismarck Archipelago	Bismarck Archipelago		Peekel, P. G. [translated by E. E. Henty] (1984) (p. 227) Common in the region of Rabaul, Kokopo and Vunapope.
Papua New Guinea Papua New Guinea (eastern New Guinea Island)	Papua New Guinea (eastern New Guinea Island)	native	U.S. Dept. Agr., Agr. Res. Serv. (2013)
Philippines Philippine Islands	Philippine Islands	native	U.S. Dept. Agr., Agr. Res. Serv. (2013)
Philippines Philippine Islands	Philippine Islands		Merrill, Elmer D. (1923) (p. 274) In open places at low altitudes.
Samoa Western Samoa Islands	Western Samoa Islands		Whistler, W. A. (1988) (p. 23)

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	ILDIS Co-ordinating Centre (2013)
Cambodia Cambodia	Cambodia (Kingdom of)	native	U.S. Dept. Agr., Agr. Res. Serv. (2013)
Central America Central America (Pacific rim)	Costa Rica (Republic of)	uncertain if native	ILDIS Co-ordinating Centre (2013)
Central America Central America (Pacific rim)	Guatemala (Republic of)	uncertain if native	ILDIS Co-ordinating Centre (2013)
Central America Central America (Pacific rim)	Nicaragua (Republic of)	uncertain if native	ILDIS Co-ordinating Centre (2013)
Central America Central America (Pacific rim)	Panama (Republic of)	uncertain if native	ILDIS Co-ordinating Centre (2013)
China China	China (People's Republic of)	native	Zhengyi, Wu/Raven, Peter H./Deyuan, Hong (2013) "Grasslands, sparse forests; 100-200 m. Guangdong, Hainan".
China China	Hong Kong	introduced invasive	Wu, Te-lin (2001) (p. 142) In grassland.
Indonesia Indonesia	Indonesia (Republic of)	native	U.S. Dept. Agr., Agr. Res. Serv. (2013) Celebes, Java, Lesser Sunda Islands, Sumatra
Malaysia Malaysia	Malaysia (country of)	native	U.S. Dept. Agr., Agr. Res. Serv. (2013)
New Zealand New Zealand	New Zealand (country)	introduced	ILDIS Co-ordinating Centre (2013)
South America (Pacific rim) South America (Pacific rim)	Colombia	introduced	ILDIS Co-ordinating Centre (2013)
Taiwan Taiwan Island	Taiwan Island	native	Zhengyi, Wu/Raven, Peter H./Deyuan, Hong (2013) "Grasslands, sparse forests; 100-200 m".
Thailand Thailand	Thailand (Kingdom of)	native	U.S. Dept. Agr., Agr. Res. Serv. (2013)
Vietnam Vietnam	Vietnam (Socialist Republic of)	native	U.S. Dept. Agr., Agr. Res. 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	ILDIS Co-ordinating Centre (2013)
Mauritius Mautitius Islands (Mauritius and Rodrigues)	Mauritius Island	introduced	ILDIS Co-ordinating Centre (2013)
Seychelles Seychelles Islands	Groupe d'Aldabra	introduced	ILDIS Co-ordinating Centre (2013)
Seychelles Seychelles Islands	Seychelles Islands	introduced	ILDIS Co-ordinating Centre (2013)
Seychelles Seychelles Islands	Seychelles Islands	introduced	Invasive Species Specialist Group (2017)

Control:  If you know of control methods for Crotalaria verrucosa, please let us know.