Ptychosperma macarthurii (H.Wedland ex Veitch) H.Wedland ex Hook.f., Arecaceae

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Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Risk assessment results:  High risk (based on second screen), score: 1 (Go to the risk assessment)

Other Latin names:  Kentia macarthurii H. Wendl. ex anon.

Common name(s): [more details]

English: Macarthur feather palm, Macarthur palm, cluster palm, hurricane palm

Habit:  tree

Description:  "Stems cespitose or rarely solitary, to 7 m high, 7 cm in diameter, leaves to 2 m long or more; pinnae 23-28 on each side, more or less regularly arranged, obliquely praemorse, with margins nearly parallel or tapered apically; inflorescence to 60 cm wide; staminate flowers 6-8 mm long, with 26-40 stamens; fruit red, ovoid, 12-16 mm long; seed deeply (3-) 6-grooved, with homogeneous endosperm"  (Smith, 1979; pp. 423-424).

Habitat/ecology:  (no habitat/ecology info known by PIER)

Propagation:  Seed

Native range:  "South-central New Guinea and northeastern Australia; cultivated elsewhere" (Smith, 1979; pp. 423-424).

Presence:

Pacific
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
Cook Islands Cook Islands	Cook Islands	cultivated	McCormack, Gerald (2013)
Federated States of Micronesia Pohnpei Islands	Pohnpei Island	introduced cultivated	Herrera, Katherine/Lorence, David H./Flynn, Timothy/Balick, Michael J. (2010) (p. 38)
Fiji Fiji Islands	Viti Levu Island	introduced cultivated	Smith, Albert C. (1979) (pp. 423-424) Voucher cited: Meebold 21948
French Polynesia Society Islands	Tahiti Island	introduced invasive	Meyer, Jean-Yves/Lavergne, Christophe/Hodel, Donald R. (2008) (p. 76) Locally naturalized.
French Polynesia Society Islands	Tahiti Island	introduced cultivated	Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013) Cultivée
Guam Guam Island	Guam Island	introduced	Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1987) (p. 87)
State of Hawaii Hawaiian Islands	O‘ahu Island	introduced invasive cultivated	Daehler, Curtis C./Baker, Raymond F. (2006) (p. 6) Voucher cited: F. B. Essig 680719 (HLA)
Marshall Islands Ralik Chain	Kwajalein (Kuwajleen) Atoll	introduced	Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1987) (p. 87)
Marshall Islands Ralik Chain	Kwajalein (Kuwajleen) Atoll	introduced	Whistler, W. A./Steele, O. (1999) (p. 104) Not seen on this survey and may no longer be present.
Marshall Islands Ratak Chain	Majuro (Mãjro) Atoll	introduced cultivated	Vander Velde, Nancy (2003) (p. 33)
New Caledonia New Caledonia Archipelago	Île Grande Terre	introduced cultivated	MacKee, H. S. (1994) (p. 112)
New Guinea (Indonesia and Papua New Guinea) New Guinea Island	New Guinea Island	native	Smith, Albert C. (1979) (pp. 423-424)
Papua New Guinea Papua New Guinea (eastern New Guinea Island)	Papua New Guinea (eastern New Guinea Island)		U.S. Dept. Agr., Agr. Res. Serv. (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)	Northern Territory		Palmweb (2013)
Australia Australia (continental)	Queensland	native	U.S. Dept. Agr., Agr. Res. Serv. (2013)
Central America Central America (Pacific rim)	Panama (Republic of)		Palmweb (2013)
China China	Hong Kong	introduced cultivated	Wu, Te-lin (2001) (p. 296) Ornamental.
Indonesia Indonesia	Indonesia (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
Australia (Indian Ocean offshore islands) Christmas Island Group	Christmas Island	introduced invasive cultivated	Swarbrick, J. T. (1997) (p. 125)
Mauritius Mautitius Islands (Mauritius and Rodrigues)	Mauritius Island	introduced cultivated	Meyer, Jean-Yves/Lavergne, Christophe/Hodel, Donald R. (2008) (p. 76)
Seychelles Seychelles Islands	Seychelles Islands	introduced	Invasive Species Specialist Group (2017)

Control:  If you know of control methods for Ptychosperma macarthurii, please let us know.