Pteris vittata L., Pteridaceae

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Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Common name(s): [more details]

English: Chinese brake, Chinese ladder brake, ladder brake

Japanese: hoko-sida

Pohnpeian: limenkasar

Habit:  fern

Description:  "Terrestrial or lithophytic ferns. Rhizome short-creeping; scales numerous, conspicuous, c. 5 mm long, narrowly triangular, pale brown. Fronds monomorphic, arching, appearing to radiate from a crown. Stipe usually c. 2-25 cm long, pale brown, grooved, scaly towards base. Lamina 1-pinnate, oblong-obovate, c. 15-80 cm long, c. 5-30 cm wide. Pinnae closely spaced, to 25 cm long, narrowly oblong and tapering above, decreasing in length from apex to base, most pinnae attached by midrib only; base subcordate, ±overlying rachis; margins finely serrate in sterile zones. Lowermost pinnae very much shorter, deltoid to cordate; terminal pinna usually the longest; veins free, at ±90° to costa, simple or once-forked. Paraphyses abundant"  (Flora of Australia online).]

"Stems stout, short-creeping, densely scaly; scales pale brown. Leaves clustered, 1-10 dm. Petiole green to pale brown, 1-30 cm, densely scaly; scales dense proximally, extending to and along rachis. Blade oblanceolate, 1-pinnate, (15-)25-50(-80) x (6-)13-25 cm; rachis not winged. Pinnae numerous, separated proximally, closely spaced to barely overlapping distally, not remaining green through winter, not decurrent on rachis, not articulate to rachis, linear-lanceolate to linear-attenuate, simple, 2-18 cm x 4-9 mm; base asymmetrically cordate to widened or truncate; margins serrulate, prominently so near apex; apex acuminate, attenuate, or acute; scales of rachis grading into uniseriate hairs on abaxial costae, or hairs absent on abaxial costae; proximal pinnae not divided or lobed. Veins free, forked. Sori narrow, blade tissue exposed abaxially"  (Flora of North America).

Habitat/ecology:  On Guam, "common on exposed roadcuts, on limestone cliffs and banks, and on disturbed rocky ground in N. Guam" (Stone, 1970; p. 58).  In Australia, "found especially among rocks in and near creeks and in stone walls"  (Floral of Australia online).  "Tolerates dry conditions and bright sunlight"  (Staples & Herbst, 2005; p. 52).  "Roadsides and other disturbed habitats; coastal plain; 0-50 m.  Pteris vittata has escaped from cultivation. It is found on almost any calcareous substrate, such as old masonry, sidewalks, building crevices, and nearly every habitat in southern Florida with exposed limestone, notably pinelands. It is scattered throughout Florida and is sporadic, becoming less frequent to rare northward in the coastal plain"  (Flora of North America).

Propagation:  Spores

Native range:  Central and southern Africa, China, Taiwan, Japan, Thailand, Australia, now widespread in the tropics (GRIN).

Presence:

Pacific
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
Commonwealth of the Northern Mariana Islands (US) Northern Mariana Islands	Pagan Island	native	Fosberg, F. R./Falanruw, M. V. C./Sachet, M.-H. (1975) (p. 9) Vouchers cited: Moore 349 (US), Moore 364 (US)
Commonwealth of the Northern Mariana Islands (US) Northern Mariana Islands	Pagan Island	introduced	Raulerson, L. (2006) (p. 4)
Commonwealth of the Northern Mariana Islands (US) Northern Mariana Islands	Rota Island	introduced	Raulerson, L. (2006) (p. 4)
Commonwealth of the Northern Mariana Islands (US) Northern Mariana Islands	Tinian Island	introduced	Raulerson, L. (2006) (p. 4)
Commonwealth of the Northern Mariana Islands (US) Saipan	Saipan Island	introduced	Raulerson, L. (2006) (p. 4)
Federated States of Micronesia Kosrae Island	Kosrae Island	introduced invasive	Lorence, David H./Flynn, Timothy (2010) (p. 4) Voucher cited: Lorence 7886 (PTBG) Naturalized
Federated States of Micronesia Kosrae Island	Kosrae Island		National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (1996) (voucher ID: PTBG 21006) Taxon name on voucher: Pteris vittata L.
Federated States of Micronesia Pohnpei Islands	Pohnpei Island	introduced invasive	Herrera, Katherine/Lorence, David H./Flynn, Timothy/Balick, Michael J. (2010) (p. 29) Vouchers cited: E. Albert 64 (NY, PTBG), A. Dores 44 (NY, BISH, PTBG), A. Dores 98 (NY, BISH, PTBG), L. Stemmermann 2911 (BISH) Naturalized
Federated States of Micronesia Pohnpei Islands	Pohnpei Island		National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (1997) (voucher ID: PTBG 24638) Taxon name on voucher: Pteris vittata L.
Federated States of Micronesia Pohnpei Islands	Pohnpei Island		National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (2002) (voucher ID: PTBG 48716) Taxon name on voucher: Pteris vittata
Federated States of Micronesia Pohnpei Islands	Pohnpei Island		National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (2002) (voucher ID: PTBG 49028) Taxon name on voucher: Pteris vittata
Federated States of Micronesia Yap Islands	Yap (Waqab) Island		Lorence, David H./Flynn, Tim (2008) (p. 3)
Guam Guam Island	Guam Island	introduced invasive cultivated	Stone, Benjamin C. (1970) (p. 58)
Guam Guam Island	Guam Island		National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (1994) (voucher ID: PTBG 22065) Taxon name on voucher: Pteris vittata L.
State of Hawaii Hawaiian Islands	Hawai‘i (Big) Island	introduced invasive	Oppenheimer, Hank L. (2004) (p. 17)
State of Hawaii Hawaiian Islands	Hawai‘i (Big) Island		Bishop Museum (U.S.A. Hawaii. Honolulu.) (1915) (voucher ID: BISH 9087) Taxon name on voucher: Pteris vittata L.
State of Hawaii Hawaiian Islands	Kaua‘i Island	introduced invasive	Oppenheimer, Hank L. (2004) (p. 17)
State of Hawaii Hawaiian Islands	Lāna‘i Island	introduced invasive	Oppenheimer, Hank L. (2004) (p. 17) Voucher cited: Oppenheimer H40125 (BISH)
State of Hawaii Hawaiian Islands	Maui Island	introduced invasive	Oppenheimer, Hank L. (2004) (p. 17)
State of Hawaii Hawaiian Islands	Maui Island		Bishop Museum (U.S.A. Hawaii. Honolulu.) (1909) (voucher ID: BISH 21949) Taxon name on voucher: Pteris vittata L.
State of Hawaii Hawaiian Islands	Moloka‘i Island	introduced invasive	Oppenheimer, Hank L. (2004) (p. 17) Probably introduced but not yet collected.
State of Hawaii Hawaiian Islands	Moloka‘i Island	introduced invasive	Oppenheimer, Hank (2008) (p. 34) East Maui. Voucher cited: Oppenheimer & B. Garnett H60728 (BISH, PTBG)
State of Hawaii Hawaiian Islands	O‘ahu Island	introduced invasive	Oppenheimer, Hank L. (2004) (p. 17)
State of Hawaii Hawaiian Islands	O‘ahu Island		Bishop Museum (U.S.A. Hawaii. Honolulu.) (1887) (voucher ID: BISH 9092) Taxon name on voucher: Pteris vittata L.
Palau Palau (Belau ) (main island group)	Babeldaob Island		Raulerson, L./Rinehart, A. F./Falanruw, M. C. (1996) (p. 14)
Palau Palau (Belau ) (main island group)	Babeldaob Island	introduced invasive	Space, James C./Lorence, David H./LaRosa, Anne Marie (2009) (p. 5) Voucher: Lorence 9851 (PTBG, BNM, NY, UC)
Palau Palau (Belau ) (main island group)	Babeldaob Island		National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (2008) (voucher ID: PTBG 144) Taxon name on voucher: Pteris vittata
Palau Palau (Belau ) (main island group)	Koror (Oreor) Island		National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (2007) (voucher ID: PTBG 47532) Taxon name on voucher: Pteris vittata
Palau Palau (Belau ) (main island group)	Malakal (Ngemelachel) Island		Wagner, W. L./ Herbst, D. R./Weitzman, A./Lorence, D.H. (2013)
Palau Palau (Belau ) (main island group)	Palau Islands (main island group)	introduced	Fosberg, F. R./Otobed, D./Sachet, M.-H./Oliver, R. L./Powell, D. A./Canfield, J. E. (1980) (p. 4)
Palau Palau (Belau ) (main island group)	Peleliu (Beliliou) Island		Beleu National Museum (Republic of Palau. Koror.) (1978) (voucher ID: BNM 1026) Taxon name on voucher: Pteris vittata L.
Philippines Philippine Islands	Philippine Islands	introduced invasive	Waterhouse, D. F. (1993) (p. 68)
Tonga Tongatapu Group	‘Eua Island		Yuncker, T. G. (1959) (p. 38) Vouchers cited: Yuncker 15608, Yuncker 15612
Tonga Tongatapu Group	Tongatapu Island		Yuncker, T. G. (1959) (p. 37) Vouchers cited: Yuncker 15147, Yuncker 16241
Tonga Vava‘u Group	Vava‘u Island		Yuncker, T. G. (1959) (p. 38) Voucher cited: Yuncker 16076
United States (other Pacific offshore islands) Palmyra Atoll	Palmyra Atoll		National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (1995) (voucher ID: PTBG 38261) Taxon name on voucher: Pteris vittata L.

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)	New South Wales	native	Australian Biological Resources Study (2013)
Australia Australia (continental)	Queensland	native	U.S. Dept. Agr., Agr. Res. Serv. (2013)
Australia Australia (continental)	Queensland	native	Australian Biological Resources Study (2013)
Cambodia Cambodia	Cambodia (Kingdom of)	introduced invasive	Waterhouse, D. F. (1993) (p. 68)
China China	China (People's Republic of)	native	U.S. Dept. Agr., Agr. Res. Serv. (2013)
China China	Hong Kong	native	Wu, Te-lin (2001) (p. 17)
Japan Japan	Japan	native	U.S. Dept. Agr., Agr. Res. Serv. (2013)
Japan Ryukyu Islands	Ryukyu Islands	native	U.S. Dept. Agr., Agr. Res. Serv. (2013)
Malaysia Malaysia	Malaysia (country of)	introduced invasive	Waterhouse, D. F. (1993) (p. 68)
Negara Brunei Darussalam Brunei	Brunei (Negara Brunei Darussalam)	introduced invasive	Waterhouse, D. F. (1993) (p. 68)
Singapore Singapore	Singapore (Republic of)	introduced invasive	Waterhouse, D. F. (1993) (p. 68)
Singapore Singapore	Singapore (Republic of)	uncertain if introduced invasive	Chong, Kwek Yan/Tan, Hugh T. W./Corlett, Richard T. (2009) (p. 73) Weed of uncertain origin
Taiwan Taiwan Island	Taiwan Island	native	U.S. Dept. Agr., Agr. Res. Serv. (2013)
Thailand Thailand	Thailand (Kingdom of)	native	U.S. Dept. Agr., Agr. Res. Serv. (2013)
United States (west coast) United States (west coast states)	USA (California)	introduced	U.S. Dept. Agr., Nat. Res. Cons. Serv. (2013)
Vietnam Vietnam	Vietnam (Socialist Republic of)	introduced invasive	Waterhouse, D. F. (1993) (p. 68)

Indian Ocean
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
Australia (Indian Ocean offshore islands) Christmas Island Group	Christmas Island	native	Orchard, Anthony E., ed. (1993) (p. 21)
British Indian Ocean Territory Chagos Archipelago	Diego Garcia Island	introduced invasive	Whistler, W. Arthur (1996) (p. 23)
Seychelles Seychelles Islands	Seychelles Islands	introduced	Invasive Species Specialist Group (2017)

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)	United States (other states)	introduced	U.S. Dept. Agr., Nat. Res. Cons. Serv. (2013)
United States (continental except west coast) United States (other states)	USA (Florida)	introduced	U.S. Dept. Agr., Nat. Res. Cons. Serv. (2013)

Control:  If you know of control methods for Pteris vittata, please let us know.