Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Common name(s): [more details]

English: narrow-leaved crotalaria

Habit:  herb

Description:  "Erect annual herb, 0.5-1 m high.  Stems little-branched, densely appressed tawny-pubescent; leaves simple, nearly sessile, the blade linear, 2-3.5 cm long, 3 mm wide, obtuse and shortly apiculate at apex, cuneate to obtuse at base, densely appressed-pubescent and paler beneath, less so above.  Inflorescence terminal or axillary racemes, elongate, laxly-flowered.  Flowers yellow, short-pedicelled, about 5 mm long; calyx densely appressed-pubescent, the lobes lanceolate, acute, not accrescent in fruit; corolla scarcely longer than the calyx, glabrous; ovary glabrous, sessile.  Pod ovoid, straight, equaling or slightly exceeding the calyx, black, glabrous"  (Walker, 1976; p. 555).

Habitat/ecology:  "In grassy fields and roadsides" (Walker, 1976; p. 555).

Propagation:  Seed

Native range:  India to South China, Taiwan, the Philippines, Malaysia and Australia (Li et al., 1977; p. 233).

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 Yap Islands	Yap (Waqab) Island	introduced	Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 106)
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 invasive	MacKee, H. S. (1994) (p. 82) Vouchers cited: Schmid 30 (NOU), MacKee 28354, Toutain 3311 (NOU)
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. (2009)

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)	Northern Territory	native	U.S. Dept. Agr., Agr. Res. Serv. (2009)
Australia Australia (continental)	Queensland	native	U.S. Dept. Agr., Agr. Res. Serv. (2009)
Colombia Colombia	Colombia (Republic of)		Holm, Leroy/Pancho, Juan V./Herberger, James P./Plucknett, Donald L. (1979) (p. 103)
Indonesia Indonesia	Indonesia (Republic of)	native	U.S. Dept. Agr., Agr. Res. Serv. (2009)
Japan Ryukyu Islands	Ryukyu Islands	native	ILDIS Co-ordinating Centre (2009)
Malaysia Malaysia	Malaysia (country of)	native	U.S. Dept. Agr., Agr. Res. Serv. (2009)
Taiwan Taiwan	Taiwan Island	native	ILDIS Co-ordinating Centre (2009)

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

Information about Crotalaria linifolia as a weed (worldwide references) may be available from the Global Compendium of Weeds (GCW).

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

References:

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

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. 2009. International Legume Database & Information Service. Online searchable database.

Li, Hui-lin/Liu, Tang-shui/Huang, Tseng-chieng/Koyama, Tetsuo/DeVol, Charles E., eds. 1977. Flora of Taiwan, Volume 3. Epoch Pub. Co., Taipei. 1000 pp.

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

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. 2009. National Genetic Resources Program. Germplasm Resources Information Network (GRIN). Online searchable database.

Walker, E. H. 1976. Flora of Okinawa and the southern Ryukyu Islands. Smithsonian Institution Press, Washington. 1159 pp.