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, 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
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)
Guatemala
Guatemala
Guatemala (Republic of) native
Staples, George W./Herbst, Derral R. (2005) (p. 269)
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)

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.