Pacific Island Ecosystems at Risk (PIER)

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Sechium edule
(Jacq.) Sw., Cucurbitaceae
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Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Risk assessment results:  High risk, score: 7 (Go to the risk assessment)

Common name(s): [more details]

Chamorro: choyote

Chinese: fo shou gua

English: chayote, cho-cho, christophine, pipinella, vegetable pear

French: chayotte, chou-chou, chouchou, chouchoute, christofine, christophine

Hawaiian: pīpīnola

Other: chayote, choyote

Samoan: soko

Spanish: chocho, pipinela, tallote

Tongan: sioka

Habit:  vine

Description:  "Perennial climber; somewhat resembling the cucumber plant; leaves slightly rough, broadly cordate entire or somewhat angled 10-20 cm long; staminate flowers pale green, in long racemes; pistillate flowers solitary; corolla 12-17 mm broad; ovary 5-grooved; fruit pyriform, containing one seed, pale green to white, in some forms set with soft spines, with a few shallow, narrow, longitudinal grooves, usually slightly bumpy, 7-20 cm long"  (Stone, 1970).

"Stems climbing to 40 ft. high; rootstock tuberous.  Leaf petioles to 6 inches long; blades broadly ovate, to 10 inches x 10 inches, 3- or 5-angled or shallowly lobed, shortly-rough-hairy, base cordate, lobe apexes tapering.  Inflorescences (staminate) to 10 inches long.  Flower corolla ±0.5 inches in diameter, green; pistillate flower stalks ±0.5 inches long.  Fruit pear-shaped, 3-8 inches long, green to white, smooth, furrowed, or sparsely and softly spiny.  Seed large, clinging to flesh, protruding from fruit apex"  (Staples & Herbst, 2005; p. 269).

Habitat/ecology:  Full sun and ample water.  In the tropics, it does best in cooler climates above 1,000 feet elevation (Staples & Herbst, 2005; p. 269).

Propagation:  Seed

Native range:  Probably Mexico and Guatemala (Staples & Herbst, 2005; p. 269).

Presence:

Pacific
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
Fiji
Fiji Islands
Fiji Islands introduced
cultivated
Smith, Albert C. (1981) (p. 686)
French Polynesia
Society Islands
Tahiti Island introduced
cultivated
Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013)
Voucher cited: J. Florence 4615 (PAP)
De culture assez répandue.
Guam
Guam Island
Guam Island introduced
cultivated
Stone, Benjamin C. (1970) (p. 567)
Guam
Guam Island
Guam Island introduced
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 179)
State of Hawaii
Hawaiian Islands
Kaua‘i Island introduced
invasive
cultivated
Staples, George W./Herbst, Derral R. (2005) (p. 269)
Occasionally naturalized
State of Hawaii
Hawaiian Islands
O‘ahu Island introduced
invasive
cultivated
Staples, George W./Herbst, Derral R. (2005) (p. 269)
Occasionally naturalized
New Caledonia
New Caledonia Archipelago
Île Grande Terre introduced
invasive
cultivated
MacKee, H. S. (1994) (p. 47)
Vouchers cited: Guillaumin & Baumann s.n., MacKee 12126, MacKee 43433
"Envahissant"
Niue
Niue
Niue Island introduced
cultivated
Yuncker, T. G. (1943) (p. 115)
Voucher cited: Yuncker 9975 (BISH). Not seen in 1965 per Sykes (1970).
Palau
Palau (Belau ) (main island group)
Koror (Oreor) Island   Wagner, W. L./ Herbst, D. R./Weitzman, A./Lorence, D.H. (2013)
Palau
Palau (Belau ) (main island group)
Palau Islands (main island group)   Lorence, David H./Flynn, Tim (2010) (p. 26)
Papua New Guinea
Bismarck Archipelago
Bismarck Archipelago introduced
invasive
cultivated
Peekel, P. G. [translated by E. E. Henty] (1984) (p. 551)
Grown as a vegetable, now wild in the Bismarck Archipelago.
Pacific Rim
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
Central America
Central America (Pacific rim)
Guatemala (Republic of) native
Staples, George W./Herbst, Derral R. (2005) (p. 269)
China
China
China (People's Republic of) introduced
cultivated
Zhengyi, Wu/Raven, Peter H./Deyuan, Hong (2013)
Commonly cultivated in S. China.
China
China
Hong Kong introduced
cultivated
Wu, Te-lin (2001) (p. 106)
Japan
Japan
Japan (country) introduced
Mito, Toshikazu/Uesugi, Tetsuro (2004) (p. 186)
Mexico
Mexico
Mexico (United Mexican States) native
Staples, George W./Herbst, Derral R. (2005) (p. 269)
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
cultivated
Lavergne, Christophe (2006)
"Cultivé/naturalisé"
French Territory of Mayotte
Mayotte Islands
Mayotte Island introduced
cultivated
Comité français de l'Union Internationale pour la Conservation de la Nature en France (2013)
Seychelles
Seychelles Islands
Seychelles Islands introduced
Invasive Species Specialist Group (2017)

Comments:  Naturalized in La Réunion per Christophe Lavergne, pers. com.


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This page was created on 28 FEB 2006 and was last updated on 26 OCT 2012.