Pacific Island Ecosystems at Risk (PIER)

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Ceratopteris pteridoides
(Hook.) Hieron., Pteridaceae
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Present on Pacific Islands?  no

Primarily a threat at high elevations?  no

Other Latin names:  Parkeria pteridoides Hook.

Common name(s): [more details]

English: floating fern

Habit:  aquatic fern

Description:  "Plants floating, occasionally rooted in mud.  Sterile leaves deltoid, rhomboid, or ovate, often cordate, 8-30 cm long, 6-24 cm broad, palmately to pinnately lobed (or occasionally pinnate-pinnatifid at the very base), the lobes commonly obtuse to subacute, often bearing proliferous buds in their sinuses; lamina commonly with 1-2 pairs of pinnae (or lobes); basal segments (or pinnae) or midveins of basal lobes borne oppositely on the rachis.  Fertile leaves deltoid, cordate, or reniform, 15-50 cm long, 10-35 cm broad; lamina 3- to 4-pinnate (at least in the proximal half); pinnae 4-9 pairs, ascending, basal pair often opposite; sporangia with annulus lacking or vestigial, the indurated cells 0-12 (-40); spores 32 to each sporangium" (Stolze, 1981; p. 124).

Habitat/ecology:  "In ponds, or in slow-moving rivers or streams, sea level to 100 m" (Stolze, 1981; p. 124).

Propagation:  Spores

Native range:  "El Salvador to Panama; Colombia to French Guiana, south to Peru and Argentina; Greater Antilles, Florida; Louisiana" (Stolze, 1981; p. 124).

Presence:

Pacific
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
Philippines
Philippine Islands
Philippine Islands   Waterhouse, D. F. (1993) (p. 64)
Pacific Rim
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
Australia
Australia (continental)
Australia (continental)   Holm, Leroy/Pancho, Juan V./Herberger, James P./Plucknett, Donald L. (1979) (p. 78)
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)
Malaysia
Malaysia
Malaysia (country of)   Waterhouse, D. F. (1993) (p. 64)
Mexico
Mexico
Mexico (United Mexican States) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Negara Brunei Darussalam
Brunei
Brunei (Negara Brunei Darussalam)   Waterhouse, D. F. (1993) (p. 64)
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)
Perú
Perú
Perú (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Also reported from
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
United States (continental except west coast)
United States (other states)
USA (Florida) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)

Comments:  Reported as possibly an invasive plant in southeast Asia (per Barbara Waterhouse, pers. com.).


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This page was created on 29 MAY 2005 and was last updated on 17 MAR 2008.