Pacific Island Ecosystems at Risk (PIER)

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Hylocereus polyrhizus
(F. A. C. Weber) Britton & Rose, Cactaceae
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Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Other Latin names:  Cereus polyrhizus F. A. C. Weber

Common name(s): [more details]

English: pitahaya

Spanish: flor de cáliz

Habit:  cactus

Description:  "Plants sprawling to climbing, profusely branched, epiphytic, lithophytic, and terrestrial, to several meters long.  Stems two- to four-angled, usually three-angled, dark green, becoming whitish with age, 0.5-2 m (20-79 in) long, 3-10 cm (1.2-3.9 in) wide.  Ribs smooth to wavy, often horny, with concave faces.  Spines 2-6, bulbous basally, reddish, becoming gray, needle-like, straight, 2-10 mm (to 0.4 in) long.  Flowers borne singly or in small clusters, white, 25-31 cm (9.8-12 in) long, 25-30 cm (9.8-12 in) in diameter; floral tubes straight to strongly curved; pericarpels indistinct.  Fruits ellipsoidal, red, 7-10 cm (2.8-3.9 in) long" (Anderson, 2001; p. 379).

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

Propagation:  Seed

Native range:  "Nicaragua, Costa Rica, Panama, Colombia and Ecuador" (Anderson, 2001; p. 379).

Presence:

Pacific
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
Ecuador (Galápagos Islands)
Floreana Group
Floreana Island introduced
invasive
cultivated
Charles Darwin Foundation (2008)
Ecuador (Galápagos Islands)
Isabela Group
Isabela Island introduced
invasive
cultivated
Charles Darwin Foundation (2008)
Ecuador (Galápagos Islands)
Isabela Group
Volcán Sierra Negra, Isabela Island introduced
invasive
cultivated
Charles Darwin Foundation (2008)
Ecuador (Galápagos Islands)
San Cristóbal Group
San Cristóbal Island introduced
invasive
cultivated
Charles Darwin Foundation (2008)
Ecuador (Galápagos Islands)
Santa Cruz Group
Santa Cruz Island introduced
invasive
cultivated
Charles Darwin Foundation (2008)
Pacific Rim
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
Colombia
Colombia
Colombia (Republic of) native
Anderson, Edward F. (2001) (p. 379)
Costa Rica
Costa Rica
Costa Rica (Republic of) native
Anderson, Edward F. (2001) (p. 379)
Ecuador (Mainland)
Ecuador
Ecuador (Republic of) (continental) native
Anderson, Edward F. (2001) (p. 379)
Nicaragua
Nicaragua
Nicaragua (Republic of) native
Anderson, Edward F. (2001) (p. 379)
Panama
Panama
Panama (Republic of) native
Anderson, Edward F. (2001) (p. 379)
Perú
Perú
Perú (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)


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

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This page was created on 18 JUN 2004 and was last updated on 18 OCT 2006.