Pacific Island Ecosystems at Risk (PIER)

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Cecropia obtusifolia
Bertol., Urticaceae
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Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Risk assessment results:  High risk, score: 10 (Go to the risk assessment).

Other Latin names:  Cecropia palmata auct.

Common name(s): [more details]

English: guarumo, snakewood tree, trumpet, trumpet tree

Maori (Cook Islands): māniota, rau-māniota

Spanish: guaramo, guarumbo, guarumo

Habit:  tree

Description:  "Trees usually 5-10 m tall. Leaf blades usually 20-30 cm long, usually divided more than 1/2 to the center, 9-15-lobed, the lobes occasionally with 1 to several lateral lobes, upper surface scabridulous and sparsely arachnoid pubescent, lower surface very pale to nearly white, minutely and usually densely puberulent, petioles usually 23-30 cm long, stipules 7-11 cm long.  Staminate flowers in spikes (10-) 12-18 cm long, these in clusters of 3-9, spathes (11-) 12-20 cm long, 0.3-0.4 cm in diameter; pistillate flowers in spikes 17-30 cm long, ca. 0.5 cm in diameter at anthesis, enlarging to 0.6-0.9 cm in diameter in fruit, the spikes in clusters of 2-4, spathes 16-20 cm long, outer face usually arachnoid pubescent, inner face villous.  Fruit ovoid to oblong-ovoid, somewhat flattened, 3.3-3.7 mm long" (Wagner et al., 1999; p. 530).

C. peltata has leaves divided only halfway to the base, staminate spikes in clusters of 12-50, and pistillate spike less than 12 cm long when fully expanded (Wagner et al., 1999; p. 530).

Habitat/ecology:  "This very rapidly growing but short-lived tree attains a height of no more than 10 m.  It forms dense stands which seriously impede the growth of other plants" (Smith, 1985; p. 187). It can invade in gaps in native forest.

In Hawai‘i, "naturalized in pastures and low elevation wet forest" (Wagner et al., 1999; p. 530).

Propagation:  Seeds are dispersed by frugivorous birds.

Native range:  Southern Mexico to Ecuador and Colombia (Staples & Herbst, 2005; p. 231).

Presence:

Pacific
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
Cook Islands
Southern Cook Islands
Rarotonga Island introduced
invasive
Meyer, Jean-Yves (2000) (p. 88)
Cook Islands
Southern Cook Islands
Rarotonga Island   McCormack, Gerald (2013)
Cook Islands
Southern Cook Islands
Rarotonga Island introduced
invasive
Space, James C./Flynn, Tim (2002) (p. 6)
Cook Islands
Southern Cook Islands
Rarotonga Island   Bishop Museum (Honolulu) (1929) (voucher ID: BISH 161305)
Taxon name on voucher: Cecropia obtusifolia Bertol.
State of Hawaii
Hawaiian Islands
Hawai‘i (Big) Island introduced
invasive
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 530)
Voucher cited: MacDaniels 326 (BISH)
State of Hawaii
Hawaiian Islands
Kaua‘i Island introduced
invasive
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 530)
State of Hawaii
Hawaiian Islands
O‘ahu Island introduced
invasive
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 530)
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
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Costa Rica
Costa Rica
Costa Rica (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Ecuador (Mainland)
Ecuador
Ecuador (Republic of) (continental) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
El Salvador
El Salvador
El Salvador (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Guatemala
Guatemala
Guatemala (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Honduras
Honduras
Honduras (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Mexico
Mexico
Mexico (United Mexican States) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Nicaragua
Nicaragua
Nicaragua (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Panama
Panama
Panama (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)

Comments:  Very invasive on Rarotonga, Cook Islands (Space & Flynn, 2002).


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This page was created on 1 JAN 1999 and was last updated on 2 NOV 2011.