Crotalaria spectabilis Roth, Fabaceae

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Present on Pacific Islands?  yes

Threat only at high elevations?  no

Risk assessment results:  Reject, score: 9 (Go to the risk assessment)

Common name(s): [more details]

English: rattlebox, rattlepod, showy crotalaria, showy rattlebox, showy rattlepod

French: crotalaire remarquable

Hawaiian: kolomona

Palauan: kuroteraria

Tongan: ha‘apai

Habit:  herb

Description:  "Shrub with simple narrow obovate leaves; floral bracts cordate leaflike; calyx glabrous, smaller than corolla, cleft more than halfway to base; corolla purple, pods glabrous."  (Stone, 1970)"Annual herbs; stems erect, up to 20 dm long, ridged, glabrous or nearly so.  Leaves simple, elliptic, rhombic-obovate, or oblanceolate, 5.5-14 cm long, 2.8-7.4 cm wide, veins 6-11 on each side of midvein, upper surface glabrous and slightly punctate, lower surface sparsely to densely appressed pubescent, apex rounded and often mucronate, base cuneate, petioles 4-7 mm long, stipules triangular, up to 10 mm long.  Flowers 15-27 mm long, 15-40 in terminal or axillary, somewhat lax inflorescences, rachis 13.5-42 cm long (incl. peduncle), bracts ovate, 8-15 mm long, spreading, usually persistent, bracteoles at or below mid-pedicel, ovate to triangular; calyx glabrous, the tube 5.5-7.5 mm long, the lobes 5.5-10 mm long, lateral lobes distinct at apex; petals yellow, standard 12-16 mm long, 14-18 mm wide, wings broadly oblong, 9-12 mm long, 7.5-11 mm wide, keel petals short, beak twisted and ciliate, margins ciliate; elongated anthers 2.5-3.1 mm long, short ones 0.7-1 mm long.  Pods brown or dark brown at maturity, 3.2-4 cm long, nonstipitate, glabrous.  Seeds ca. 22 per pod, dark brown, up to 4.5 mm long, smooth.  Differs from Crotalaria retusa in its large bracts and glabrous calyx."  (Wagner et al., 1999; p. 663).

Habitat/ecology:  In Hawai‘i, "naturalized in disturbed areas, ca. 50-120 m" (Wagner et al., 1999; p. 663).  In Tonga, "uncommon in disturbed areas" (Whistler, 1988; p. 23).

Propagation:  Seed

Native range:  India (Wagner et al., 1999; p. 663).

Presence:

Pacific
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
Federated States of Micronesia Chuuk Islands	Weno (Moen) Island	introduced	Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 107)
Federated States of Micronesia Kosrae Island	Kosrae Island		Lorence, David H./Flynn, Tim (2005) (p. 15) Voucher cited: Lorence 7893 (PTBG)
Federated States of Micronesia Pohnpei Islands	Pohnpei Island	introduced	Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 107)
Federated States of Micronesia Yap Islands	Yap (Waqab) Island	introduced	Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 107)
French Polynesia Marquesas Islands	Marquesas Islands	introduced	ILDIS Co-ordinating Centre (2005)
French Polynesia Society Islands	Society Islands	introduced	ILDIS Co-ordinating Centre (2005)
French Polynesia Society Islands	Tahiti Island		Fosberg, F. R. (1997) (p. 49)
Guam Guam Island	Guam Island	introduced	Stone, Benjamin C. (1970) (p. 329) Not seen, based on Fosberg record.
Guam Guam Island	Guam Island	introduced	Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 107)
State of Hawaii Hawaiian Islands	Hawai‘i (Big) Island	introduced invasive	Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 663)
State of Hawaii Hawaiian Islands	Kaua‘i Island	introduced invasive	Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 663)
State of Hawaii Hawaiian Islands	Moloka‘i Island	introduced invasive	Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 663)
State of Hawaii Hawaiian Islands	Ni‘ihau Island	introduced invasive	Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 663)
State of Hawaii Hawaiian Islands	O‘ahu Island	introduced invasive	Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 663) Voucher cited: Mann & Brigham 239 (BISH)
Kiribati Tungaru (Gilbert) Islands	Tarawa Atoll	introduced	Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 107)
Nauru Nauru Island	Nauru Island	introduced invasive cultivated	Thaman, R. R./Fosberg, F. R./Manner, H. I./Hassall, D. C. (1994) (p. 144) Vouchers cited: Fosberg 58647 (US), Swarbrick 9579 (BRIU)
New Caledonia New Caledonia	New Caledonia Islands		Swarbrick, John T. (1997) (p. 90)
New Caledonia New Caledonia Archipelago	Île Grande Terre	introduced invasive	Tassin, Jacques (2005)
New Caledonia New Caledonia Archipelago	Île Grande Terre	introduced	MacKee, H. S. (1994) (p. 82) Vouchers cited: Balansa 305, de Pompéry s.n., Däniker 52, MacKee 4638, Suprin 1987, Toutain 3927 (NOU), MacKee 45502
Palau Palau (main island group)	Babeldaob Island	introduced invasive	Space, James C./Waterhouse, Barbara/Miles, Joel E./Tiobech, Joseph/Rengulbai, Kashgar (2003) (p. 100)
Palau Palau (main island group)	Koror Island	introduced	Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 107)
Palau Palau (main island group)	Koror Island	introduced invasive	Space, James C./Waterhouse, Barbara/Miles, Joel E./Tiobech, Joseph/Rengulbai, Kashgar (2003) (p. 96)
Palau Palau (main island group)	Ngerkebesang Island	introduced invasive	Space, James C./Waterhouse, Barbara/Miles, Joel E./Tiobech, Joseph/Rengulbai, Kashgar (2003) (p. 96)
Papua New Guinea Papua New Guinea (eastern New Guinea Island)	Papua New Guinea (eastern New Guinea Island)	introduced	ILDIS Co-ordinating Centre (2005)
Solomon Islands Solomon Islands	Solomon Islands	native	Hancock, I. R./Henderson, C. P. (1988) (p. 60)
Tonga Ha‘apai Group	Ha‘apai 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 (2005)
China China	China (People's Republic of)	native	ILDIS Co-ordinating Centre (2005)
Colombia Colombia	Colombia (Republic of)	introduced	ILDIS Co-ordinating Centre (2005)
Honduras Honduras	Honduras (Republic of)		Holm, Leroy/Pancho, Juan V./Herberger, James P./Plucknett, Donald L. (1979) (p. 104)
Mexico Mexico	Mexico (United Mexican States)	introduced	ILDIS Co-ordinating Centre (2005)
Panama Panama	Panama (Republic of)	introduced	ILDIS Co-ordinating Centre (2005)
Perú Perú	Perú (Republic of)	introduced	ILDIS Co-ordinating Centre (2005)
Taiwan Taiwan	Taiwan Island	introduced	ILDIS Co-ordinating Centre (2005)
Thailand Thailand	Thailand (Kingdom of)	native	ILDIS Co-ordinating Centre (2005)

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 (2005)

Additional information:  "All parts of the plant are poisonous, whether green or dried in hay. The seeds are especially poisonous. The toxic principle is the alkaloid monocrotaline. Chickens, horses, cattle and swine are the species usually affected, but sheep, goats, mules and dogs can be affected to a lesser degree. Poisoning occurs from consuming the green plant, hay contaminated with crotalaria, or dried seed in harvested grain." Poisonous Plants of the Southern United States

Additional online information about Crotalaria spectabilis is available from the Hawaiian Ecosystems at Risk project (HEAR).

Taxonomic information about Crotalaria spectabilis may be available from the Germplasm Resources Information Network (GRIN).

References:

Fosberg, F. R. 1997. Preliminary checklist of the flowering plants and ferns of the Society Islands. Ed. by David R. Stoddart. U. Cal. Berkeley.

Fosberg, F. R./Otobed, D./Sachet, M.-H./Oliver, R. L./Powell, D. A./Canfield, J. E. 1980. Vascular plants of Palau with vernacular names. Department of Botany, The Smithsonian Institution, Washington, D.C. 43 pp.

Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce. 1979. A geographical checklist of the Micronesian dicotyledonae. Micronesica 15:1-295.

Hancock, I. R./Henderson, C. P. 1988. Flora of the Solomon Islands. Research Bulletin No. 7. Ministry of Agriculture and Lands, Honiara. 203 pp.

Holm, Leroy/Pancho, Juan V./Herberger, James P./Plucknett, Donald L. 1979. A geographical atlas of world weeds. John Wiley & Sons, New York. 391 pp.

ILDIS Co-ordinating Centre. 2005. International Legume Database & Information Service. Online searchable database.

Lorence, David H./Flynn, Tim. 2005. Checklist of the plants of Kosrae. Unpublished checklist. National Tropical Botanical Garden, Lawai, Hawai‘i. 23 pp.

MacKee, H. S. 1994. Catalogue des plantes introduites et cultivées en Nouvelle-Calédonie. Muséum National d'Histoire Naturelle, Paris, 164 p.

Space, James C./Waterhouse, Barbara/Miles, Joel E./Tiobech, Joseph/Rengulbai, Kashgar. 2003. Report to the Republic of Palau on invasive plant species of environmental concern. USDA Forest Service, Honolulu. 174 pp.

Stone, Benjamin C. 1970. The flora of Guam. Micronesica 6:1-659.

Swarbrick, John T. 1997. Weeds of the Pacific Islands. Technical paper no. 209. South Pacific Commission, Noumea, New Caledonia. 124 pp.

Tassin, Jacques. 2005. Jacques Tassin (IAC-CIRAD), personal communication.

Thaman, R. R./Fosberg, F. R./Manner, H. I./Hassall, D. C. 1994. The flora of Nauru. Smithsonian Institution, Washington. Atoll Research Bulletin 392:1-223.

U. S. Government. 2006. Integrated Taxonomic Information System (ITIS) (on-line resource).

U.S. Dept. Agr., Agr. Res. Serv. 2007. National Genetic Resources Program. Germplasm Resources Information Network (GRIN). Online searchable database.

Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. 1999. Manual of the flowering plants of Hawaii. Revised edition. Bernice P. Bishop Museum special publication. University of Hawai‘i Press/Bishop Museum Press, Honolulu. 1919 pp. (two volumes).

Whistler, W. A. 1988. Checklist of the weed flora of western Polynesia. Technical Paper No. 194, South Pacific Commission, Noumea, New Caledonia. 69 pp.