Pacific Island Ecosystems at Risk (PIER)

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Acacia concinna
(Willd.) DC., Fabaceae
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Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Common name(s): [more details]

Chinese: teng jin he huan

English: chikakai, piquant sappan, sappan, soap pod

Habit:  tree

Description:  "Climbing or scandent shrub. Branches with brown smooth stripes, thorny, the thorns short, broad-based, flattened. Leaves with caducous stipules not thorn-like; petiole 1-1.5 cm long with prominent gland about the middle; blade bipinnate, with 5-7 pairs of pinae, the primary rachis thorny, pubescent, the pinnae with 12-18 pairs of pinnae; pinnae oblong-lanceolate, 3-10 mm long, accrescent, acute and apiculate at apex, obliquely rounded at base, entire, glabrous. Inflorescences of 2 or 3 peduncled head in axils of upper reduced leaves, appearing paniculate; peduncles 1-2.5 cm long, pubescent; heads about 1 cm in diameter when mature. Flowers pink, without or with reduced subtending bracts; ovary stipitate, glabrous. Pods thick, somewhat flattened, stalked, 8 cm long, 15-18 mm wide" (Walker,1976; pp. 538-539).

Habitat/ecology:  "Rain forest, disturbed forest, open grassland, fields, creek sides, in open areas often a sprawling shrub; also recorded from limestone; altitude 50-1050 m" (Nielsen, 1992; pp. 48-49). In New Caledonia, "devenu localement un fléau" (MacKee, 1994; p. 76).

Propagation:  Seed

Native range:  Tropical Asia (Nielsen, 1992; pp. 48-49).

Presence:

Pacific
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
New Caledonia
New Caledonia
New Caledonia Islands   Swarbrick, John T. (1997) (p. 88)
New Caledonia
New Caledonia
New Caledonia Islands introduced
invasive
Gargominy, Oliver/Bouchet, Philipe/Pascal, Michel/Jaffre, Tanguy/Tourneu, Jean-Christophe (1996) (p. 381)
Devenu localement abondante.
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. 76)
Voucher cited: Amice in MacKee 43857, Amice in MacKee 44096
Spontané
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)
Papua New Guinea
Papua New Guinea (eastern New Guinea Island)
Papua New Guinea (eastern New Guinea Island) uncertain if native
ILDIS Co-ordinating Centre (2013)
Philippines
Philippine Islands
Philippine Islands native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Philippines
Philippine Islands
Philippine Islands uncertain if native
ILDIS Co-ordinating Centre (2013)
Philippines
Philippine Islands
Philippine Islands   Merrill, Elmer D. (1923) (p. 248)
In thickets at low and medium altitudes.
Pacific Rim
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
Cambodia
Cambodia
Cambodia (Kingdom of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
China
China
China (People's Republic of) native
Zhengyi, Wu/Raven, Peter H./Deyuan, Hong (2013)
"Thin forests, thickets; 200-1100 m".
China
China
Hong Kong native
Wu, Te-lin (2001) (p. 129)
Indonesia
Indonesia
Indonesia (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Japan
Ryukyu Islands
Ryukyu Islands introduced
ILDIS Co-ordinating Centre (2013)
Malaysia
Malaysia
Malaysia (country of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Singapore
Singapore
Singapore (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Singapore
Singapore
Singapore (Republic of) extinct
Chong, Kwek Yan/Tan, Hugh T. W./Corlett, Richard T. (2009) (p. 9)
Taiwan
Taiwan Island
Taiwan Island introduced
ILDIS Co-ordinating Centre (2013)
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
invasive
Comité français de l'Union Internationale pour la Conservation de la Nature en France (2013)
naturalisée, potentiellement envahissant
Mauritius
Mautitius Islands (Mauritius and Rodrigues)
Mauritius Island introduced
ILDIS Co-ordinating Centre (2013)
Mauritius
Mautitius Islands (Mauritius and Rodrigues)
Mauritius Island introduced
Holm, Leroy/Pancho, Juan V./Herberger, James P./Plucknett, Donald L. (1979) (p. 2)
Mauritius
Mautitius Islands (Mauritius and Rodrigues)
Mauritius Island introduced
invasive
Kueffer, C./Mauremootoo, J. (2004) (pp. 7, 8)


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This page was created on 23 APR 2005 and was last updated on 19 FEB 2013.