Pacific Island Ecosystems at Risk (PIER)

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Crotalaria trichotoma
Bojer, Fabaceae
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Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Risk assessment results:  More information needed, score: 4 (Go to the risk assessment)

Other Latin names:  Crotalaria usaramoensis Baker f.; Crotalaria zanzibarica Benth.

Common name(s): [more details]

Chinese: guang e zhu shi dou

English: curara-pea

Spanish: cascabel vivaz

Habit:  herb

Description:  "Herbs or shrublets, to 2 m tall. Branches terete, ribbed, pubescent. Stipules subulate, ca. 1 mm. Leaves 3-foliolate; petiole 3-5 cm; petiolules ca. 2 mm; leaflet blades narrowly elliptic, 6-10 x 1-2 (-3) cm, abaxially pubescent, adaxially glabrous, base cuneate, apex acuminate and mucronate. Racemes terminal, ca. 20 cm, 10-20-flowered; bracts linear, 2-3 mm. Pedicel 3-6 mm; bracteoles inserted on apical half of pedicel, similar to bracts in shape but shorter. Calyx subcampanulate, 4-5 mm, 5-lobed; lobes triangular, ± as long as tube, glabrous to sparsely pubescent. Corolla yellow, exserted beyond calyx; standard orbicular, ca. 1.2 cm in diameter, base with 2 appendages, apex awned; wings oblong, ± as long as standard; keel ca. 1.5 cm, slightly rounded, narrowed apically from middle, marginally pubescent at base, beak rather long. Ovary subsessile. Legume cylindric, 3-4 x 0.7-1.2 cm, 50-70-seeded, glabrescent; style and calyx persistent. Seeds orangish buff to terra-cotta-colored, reniform, smooth"  (Flora of China online).

Habitat/ecology:  In Hawai‘i, "collected in low elevation, moist, disturbed roadside vegetation" (Starr, Starr & Loope, 2006; p. 35).

Propagation:  Seed

Native range:  Mozambique; Tanzania; also cultivated (GRIN).

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. 107)
State of Hawaii
Hawaiian Islands
Maui Island introduced
invasive
Starr, Forest/Starr, Kim/Loope, Lloyd L. (2006) (p. 35)
East Maui. Voucher cited: Starr & Martz 001129-4 (BISH)
Nauru
Nauru Island
Nauru Island introduced
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 107)
Palau
Palau (Belau ) (main island group)
Babeldaob Island introduced
invasive
Space, James C./Waterhouse, Barbara/Miles, Joel E./Tiobech, Joseph/Rengulbai, Kashgar (2003) (p. 100)
Single plant seen in Airai State.
Papua New Guinea
Papua New Guinea (eastern New Guinea Island)
Papua New Guinea (eastern New Guinea Island)   Waterhouse, Barbara (year unknown)
Papua New Guinea
Papua New Guinea (eastern New Guinea Island)
Papua New Guinea (eastern New Guinea Island) introduced
ILDIS Co-ordinating Centre (2013)
Philippines
Philippine Islands
Philippine Islands introduced
ILDIS Co-ordinating Centre (2013)
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)
China
China
China (People's Republic of) introduced
invasive
cultivated
Zhengyi, Wu/Raven, Peter H./Deyuan, Hong (2013)
"Grasslands, along trails; 100-2000 m".
El Salvador
El Salvador
El Salvador (Republic of) introduced
ILDIS Co-ordinating Centre (2013)
Indonesia
Indonesia
Indonesia (Republic of) introduced
ILDIS Co-ordinating Centre (2013)
Indonesia
Indonesia
West Papua Province (Indonesia) (western New Guinea Island) (formerly Irian Jaya) introduced
ILDIS Co-ordinating Centre (2013)
Malaysia
Malaysia
Malaysia (country of) introduced
ILDIS Co-ordinating Centre (2013)
Perú
Perú
Perú (Republic of) uncertain if native
ILDIS Co-ordinating Centre (2013)
Taiwan
Taiwan Island
Taiwan Island introduced
invasive
cultivated
Zhengyi, Wu/Raven, Peter H./Deyuan, Hong (2013)
"Grasslands, along trails; 100-2000 m".
Vietnam
Vietnam
Vietnam (Socialist Republic of) introduced
ILDIS Co-ordinating Centre (2013)
Indian Ocean
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
British Indian Ocean Territory
Chagos Archipelago
Diego Garcia Island   National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (1995) (voucher ID: PTBG 37914)
Taxon name on voucher: Crotalaria zanzibarica Benth.
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
Seychelles Islands introduced
ILDIS Co-ordinating Centre (2013)

Comments:  Invasive in Papua New Guinea and northern Queensland, Australia (Barbara Waterhouse, pers. com.)


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

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This page was created on 1 JAN 1999 and was last updated on 17 MAR 2013.