Crotalaria incana L., Fabaceae

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Present on Pacific Islands?  yes

Threat only at high elevations?  no

Common name(s): [more details]

English: fuzzy rattlebox, fuzzy rattlepod, woolly rattlepod

Hawaiian: kolomona, kūkaehoki

Palauan: kuroteraria

Habit:  shrub

Description:  "Erect annual or suffrutescent perennial herbs; stems 2.5-13.3 dm long, weakly striate, usually spreading long-pubescent.  Leaves trifoliolate, leaflets elliptic, ovate, or obovate, 1-7 cm long, 0.6-4.4 cm wide, veins 3-6 on each side of midvein, both surfaces usually spreading long-pubescent, apex rounded, often retuse or mucronate, base rounded or broadly cuneate, petioles 20-80 mm long, stipules triangular, 3-8 mm long, persistent or caducous.  Flowers 8.5-16 mm long, 5-30 in leaf-opposed or terminal, lax to crowded inflorescences, rachis 5-23 cm long (incl. peduncle), bracts linear-triangular, 2-8 mm long, pendent, caducous or persistent, bracteoles at apex of pedicel, linear to filiform; calyx usually spreading long-pubescent, the tube 1.5-3 mm long, the lobes 4.5-12 mm long, lateral lobes distinct at apex; petals yellow, with age with red or brown lines near base, standard 8.5-16 mm long, 5-11.6 mm wide, wings oblong, 7-13 mm long, 2.5-5 mm wide, keel petals with nontwisted short beak, margins lanate; elongated anthers 1.5-2.5 mm long, short ones 0.5-0.9 mm long.  Pods tan or dark brown at maturity, 2.8-3.9 cm long, nonstipitate, spreading long-pubescent.  Seeds ca. 40 per pod, brown or black, 1.8-3 mm long, smooth"  (Wagner et al., 1999; p. 660).

Habitat/ecology:  In Hawai‘i, "naturalized in disturbed areas such as roadsides, pastures, and agricultural land, 0-410 m" (Wagner et al., 1999; p. 660).  In Samoa, "rare on roadsides on Upolu" (Whistler, 1988; p. 22). Arid lowlands and moist uplands in the Galápagos Islands (McMullen, 1999; p. 201).

Propagation:  Seed

Native range:  "Widespread in tropical America and perhaps also indigenous in Africa and Madagascar, introduced or adventive in other parts of the tropics" (Smith, 1985; p. 269).

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 Pohnpei Islands	Pohnpei Island	introduced invasive	Whistler, W. A./Steele, O. (1999) (p. 52)
Federated States of Micronesia Yap Islands	Yap (Waqab) Island	introduced	Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 106)
Fiji Fiji Islands	Viti Levu Island	introduced cultivated	Smith, Albert C. (1985) (pp. 269-270) Voucher cited: DA (FDA 15449)
French Polynesia Society Islands	Mopelia (Mapetia, Maupiha‘a, Maupihoa, Mopiha‘a) Atoll	introduced invasive	Sachet, M.-H. (1983) (p. 28) Voucher cited: Sachet 919 (US)
French Polynesia Society Islands	Society Islands	introduced	ILDIS Co-ordinating Centre (2005)
Guam Guam Island	Guam Island	introduced	Raulerson, L. (2006) (p. 36)
State of Hawaii Hawaiian Islands	Hawai‘i (Big) Island	introduced invasive	Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 660)
State of Hawaii Hawaiian Islands	Kaho‘olawe Island	introduced invasive	Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 660)
State of Hawaii Hawaiian Islands	Kaua‘i Island	introduced invasive	Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 660)
State of Hawaii Hawaiian Islands	Lāna‘i Island	introduced invasive	Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 660)
State of Hawaii Hawaiian Islands	Maui Island	introduced invasive	Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 660)
State of Hawaii Hawaiian Islands	Moloka‘i Island	introduced invasive	Hughes, Guy D'Oyly (1995) (p. 5) Voucher cited: Hughes s.n. (BISH) Common in lowland areas and fire adapted.
State of Hawaii Hawaiian Islands	Ni‘ihau Island	introduced invasive	Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 660)
State of Hawaii Hawaiian Islands	O‘ahu Island	introduced invasive	Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 660)
Kiribati Tungaru (Gilbert) Islands	Tarawa Atoll		Swarbrick, John T. (1997) (p. 90) Presence not verified.
Marshall Islands Ralik Chain	Jaluit (Jãlwõj) Atoll	introduced	Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 106)
Marshall Islands Ralik Chain	Jaluit (Jãlwõj) Atoll	introduced invasive	Fosberg, F. R./Sachet, M.-H. (1962) (p. 19) Voucher cited: Fosberg 39478 (US)
Marshall Islands Ralik Chain	Kwajalein (Kuwajleen) Atoll	introduced	Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 106)
Marshall Islands Ralik Chain	Kwajalein (Kuwajleen) Atoll	introduced invasive	Whistler, W. A./Steele, O. (1999) (p. 52) Vouchers cited: Fosberg 48049, Herbst 8963, Whistler 11247
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: Blanchon 795 (NOU), MacKee 12717, MacKee 13151, MacKee 30767, Toutain 3714 (NOU)
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. 106)
Papua New Guinea Papua New Guinea (eastern New Guinea Island)	Papua New Guinea (eastern New Guinea Island)	introduced	ILDIS Co-ordinating Centre (2005)
Philippines Philippine Islands	Philippine Islands		ILDIS Co-ordinating Centre (2005)
Samoa Western Samoa Islands	Upolu Island		Whistler, W. A. (1988) (p. 22) Rare
Solomon Islands Solomon Islands	Solomon Islands		Swarbrick, John T. (1997) (p. 90)
Solomon Islands Solomon Islands	Solomon Islands	introduced	ILDIS Co-ordinating Centre (2005)
Solomon Islands Solomon Islands	Solomon Islands	native	Hancock, I. R./Henderson, C. P. (1988) (p. 60)
United States (other Pacific offshore islands) Johnston Atoll	Johnston Island	introduced invasive	Amerson, A. Binion, Jr./Shelton, Philip C. (1976) (p. 55)
United States (other Pacific offshore islands) Midway Atoll	Midway Atoll	introduced invasive	Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 660)
United States (other Pacific offshore islands) Palmyra Atoll	Palmyra Atoll	introduced invasive	Wester, Lyndon (1985) (p. 24)
Vanuatu New Hebrides Islands	Vanuatu (Republic of)	introduced	ILDIS Co-ordinating Centre (2005)

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)
Chile (continental) Chile	Chile (Republic of)	native	ILDIS Co-ordinating Centre (2005)
China China	China (People's Republic of)	introduced	ILDIS Co-ordinating Centre (2005)
Colombia Colombia	Colombia (Republic of)	native	U.S. Dept. Agr., Agr. Res. Serv. (2007)
Costa Rica Costa Rica	Costa Rica (Republic of)	native	U.S. Dept. Agr., Agr. Res. Serv. (2007)
Ecuador (Mainland) Ecuador	Ecuador (Republic of) (continental)	native	U.S. Dept. Agr., Agr. Res. Serv. (2007)
El Salvador El Salvador	El Salvador (Republic of)	native	U.S. Dept. Agr., Agr. Res. Serv. (2007)
Guatemala Guatemala	Guatemala (Republic of)	native	U.S. Dept. Agr., Agr. Res. Serv. (2007)
Honduras Honduras	Honduras (Republic of)	native	U.S. Dept. Agr., Agr. Res. Serv. (2007)
Indonesia Indonesia	Indonesia (Republic of)		ILDIS Co-ordinating Centre (2005)
Malaysia Malaysia	Malaysia (country of)		ILDIS Co-ordinating Centre (2005)
Mexico Mexico	Mexico (United Mexican States)	native	U.S. Dept. Agr., Agr. Res. Serv. (2007)
Nicaragua Nicaragua	Nicaragua (Republic of)	native	U.S. Dept. Agr., Agr. Res. Serv. (2007)
Panama Panama	Panama (Republic of)	native	U.S. Dept. Agr., Agr. Res. Serv. (2007)
Perú Perú	Perú (Republic of)	native	U.S. Dept. Agr., Agr. Res. Serv. (2007)
Perú Perú	Perú (Republic of)	native	ILDIS Co-ordinating Centre (2005)
Taiwan Taiwan	Taiwan Island	introduced	ILDIS Co-ordinating Centre (2005)
Thailand Thailand	Thailand (Kingdom of)	native	U.S. Dept. Agr., Agr. Res. Serv. (2007)
Vietnam Vietnam	Vietnam (Socialist Republic of)	native	U.S. Dept. Agr., Agr. Res. Serv. (2007)

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)
Mauritius Mautitius Islands (Mauritius and Rodrigues)	Mauritius Island	introduced	ILDIS Co-ordinating Centre (2005)

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

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

References:

Amerson, A. Binion, Jr./Shelton, Philip C. 1976. The natural history of Johnston Atoll. Atoll Research Bulletin No. 192. Smithsonian Institution, Washington. 479 pp.

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, M.-H. 1962. Vascular plants recorded from Jaluit Atoll. Atoll Research Bulletin No. 92. Pacific Science Board, National Academy of Sciences, Washington. 39 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.

Hughes, Guy D'Oyly. 1995. New Hawaiian plant records II. In: Evenhuis, Neal L. and Miller, Scott, E., eds. Records of the Hawaii Biological Survey for 1994. Part 2: Notes. Bishop Museum Occasional Papers. 42:1-10.

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

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

McMullen, C. K. 1999. Flowering plants of the Galápagos. Comstock Pub. Assoc., Ithaca, N.Y. 370 p.

Raulerson, L. 2006. Checklist of Plants of the Mariana Islands. University of Guam Herbarium Contribution 40:1-69. .

Sachet, M.-H. 1983. Natural history of Mopelia Atoll, Society Islands. Smithsonian Institution, Washington. Atoll Reserch Bulletin 274. 37 pp.

Smith, Albert C. 1985. Flora Vitiensis nova: a new flora of Fiji. National Tropical Botanical Garden, Lawai, Kauai, Hawaii. Volume 3. 758 pp.

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.

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.

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).

Wester, Lyndon. 1985. Checklist of the vascular plants of the northern Line Islands. Smithsonian Institution, Washington. Atoll Reseach Bulletin 287:1-38.

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

Whistler, W. A./Steele, O. 1999. Botanical survey of the United States of America Kwajalein Atoll (USAKA) Islands. Prepared for Oak Ridge Institute for Science and Education and the U. S. Army Environmental Center. 111 pp.