Pacific Island Ecosystems at Risk (PIER)

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Begonia hirtella
Link, Begoniaceae
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Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Common name(s): [more details]

English: bearded begonia, Brazilian begonia

Habit:  herb

Description:  "Monoecious, fibrous-rooted, short-lived perennial herbs 3-6 dm tall; stems green or red-tinged, erect, branched, covered with long flexuous hairs, especially when younger.  Leaves widely spaced, membranous, blades oblique to petioles, reniform-ovate, (2-) 3-11 cm long, (1-) 2-4 cm wide, upper surface sparsely hirtellous, lower surface sparsely hirtellous only along the principal veins, margins irregularly shallowly toothed and ciliate, petioles usually reddish, 1.5-7 cm long, stipules lanceolate-oblong, 0.7-1.1 cm long, conspicuously long-ciliate, somewhat persistent.  Flowers few, pendent, in branched cymes, bracts deciduous, similar to stipules; staminate perianth parts 2 or 4, outer ones broadly suborbicular, ca. 4-7 mm long, inner ones, when present, narrowly elliptic, ca. 2-3.5 mm long, stamens 10-15, nearly distinct; pistillate perianth parts 5, similar to staminate but smaller.  Capsules ellipsoid, 0.6-0.8 cm long, winged, the larger wing ca. 8-12 mm wide" (Wagner et al., 1999; pp. 383-384).

Habitat/ecology:  In Hawai‘i, "naturalized, and sometimes locally common, in disturbed, wet, shaded sites, especially moist banks, 450-940 m" (Wagner et al., 1999; pp. 383-384, 1864).

Propagation:  Seed

Native range:  Brazil and Peru (Wagner et al., 1999; pp. 383-384). Brazil, Colombia, Guadeloupe; Jamaica; Martinique, Peru (GRIN).

Presence:

Pacific
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
State of Hawaii
Hawaiian Islands
Hawai‘i (Big) Island introduced
invasive
cultivated
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (pp. 383-384)
Voucher cited: Degener 9766 (US)
State of Hawaii
Hawaiian Islands
Kaua‘i Island introduced
invasive
cultivated
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (pp. 383-384, 1864)
State of Hawaii
Hawaiian Islands
Kaua‘i Island introduced
invasive
Lorence, David H./Flynn, Timothy W./Wagner, Warren L. (1995) (p. 25)
Voucher cited: L. Hume & R. Levine 427 (BISH, PTBG, US)
State of Hawaii
Hawaiian Islands
Maui Island introduced
invasive
cultivated
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (pp. 383-384)
East Maui
State of Hawaii
Hawaiian Islands
Maui Island introduced
invasive
Oppenheimer, Hank L. (2004) (pp. 9-10)
West Maui. Voucher cited: Oppenheimer, F. Duvall & L. Nelson H30219 (BISH, PTBG)
State of Hawaii
Hawaiian Islands
O‘ahu Island introduced
invasive
cultivated
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (pp. 383-384)
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)
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 10 MAY 2005 and was last updated on 2 MAR 2013.