Pacific Island Ecosystems at Risk (PIER)

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Fimbristylis autumnalis
(L.) R & S., Cyperaceae
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Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Common name(s): [more details]

Chinese: qiu piao fu cao

English: autumn rush, slender fimbristylis

French: fimbristylis d'automne

Tongan: takataka

Habit:  sedge

Description:  "Soft-based, tufted annual, 0.2-2.5 dm. high, culms flat, slender, diffuse or erect; umbel simple compound or decompound, with 1-several rays, or rays suppressed in forma brachyactis (Fern.) S.F. Blake (short-rayed, and 1-50 ovate-lanceolate or lance-elliptic brown or castaneous spikelets 3-8 mm long; scale ovate-lanceolate, with free slender tips; achenes 0.5-0.75 mm long, smooth or minutely roughened"  (Fernald, 1970; p. 262).

Of Fimbristylis autumnalis var. complanata (Retz.) Barros): "Polymorphic perennial; rhizome horizontal or at times short, clothed with brown fibers; culms closely arranged in a row along rhizome or more or less tufted, markedly flattened-trigonous, 30-70 cm tall, 2-5 mm broad, stiff, glabrous, smooth, narrowly winged above at least below corymb, clothed at base with a few sheaths; leaves few to a culm, the blades shorter than culm, flat, 3-5 mm broad, stiffly herbaceous, blunt at apex, scabrid on upper margins; sheaths laterally compressed with sharply keeled back, the ventral membrananous side rusty-colored, obliquely truncate at orifice; ligule a fringe of short pubescence; corymbs compound or decompound, 4-10 cm long, 3-6 cm broad, subloose to subdense; rays 2-5, 1-7 cm long, flattened, scabrid; leafy bracts 2-4, the lowest one suberect, shorter than corymb; spikelets small, oblong to lance-ovate, 4-9 mm long, 1-2 mm broad, abruptly acute at apex, rusty-brown, subloosely 5-15-flowered; glumes ovate, 2.5-3 mm long, abruptly contracted to a mucronate apex, chartaceous, rusty-brown, 1-keeled, the keel green, projecting into a short cusp; achenes broadly obovate, trigonous, about 1.5 mm long, milky-white, finely cancellate with several rows of transversely oblong epidermal cells; style slender, about 1 mm long, not ciliate; stigmas 3, as long as style; anthers about 1 mm long" (Smith, 1979; pp. 241-242).

Of Fimbristylis autumnalis var. tainanensis (Ohwi): "Herb, culms from short creeping rhizome to 50 cm tall; sheaths bilaterally, compressed, acutely carinate, distichous, grooved; leaves all with blades, 3-5 mm wide crowded near base of culm and often longer; inflorescence a tight umbel, or 2 or 3; rays crowded, short; spikelets brown 5 mm long, glumes sharply carinate about 1.5-2 mm long; style trifid.  Achene trigonal, pale, finely warty" (Stone, 1970; p. 172).

Habitat/ecology:  In Fiji, "occurs infrequently as a naturalized adventive, occurring in wet pastures and in other wet places on open slopes, at elevations from near sea level to 800 m" (Smith, 1979; 241-242).  "Occasional in wet places in Tonga and on Tutuila, American Samoa (Whistler, 1988; p. 42).

Propagation:  Seed

Native range:  The Americas (GRIN). Fosberg et al. (1987; p. 70) list var. tainanensis (Ohwi) T. Koyama as native in Micronesia.

Presence:

Pacific
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
American Samoa
Tutuila Islands
Tutuila Island   Whistler, W. A. (1988) (p. 42)
Voucher cited: Whistler 323
American Samoa
Tutuila Islands
Tutuila Island   National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (1991) (voucher ID: PTBG 11693)
Taxon name on voucher: Fimbristylis autumnalis (L.) R & S.
Federated States of Micronesia
Yap Islands
Yap (Waqab) Island native
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1987) (p. 70)
var. tainanensis
Fiji
Fiji Islands
Ovalau Island introduced
invasive
Smith, Albert C. (1979) (pp. 241-242)
Voucher cited: Milne 272
Fiji
Fiji Islands
Taveuni Island introduced
invasive
Smith, Albert C. (1979) (pp. 241-242)
Voucher cited: Seemann 675
Fiji
Fiji Islands
Vanua Levu Island introduced
invasive
Smith, Albert C. (1979) (pp. 241-242)
Voucher cited: Degener & Ordonez 14221
Fiji
Fiji Islands
Viti Levu Island introduced
invasive
Smith, Albert C. (1979) (pp. 241-242)
Vouchers cited: Greenwood 173, 279; Smith 6258
Guam
Guam Island
Guam Island native
Stone, Benjamin C. (1970) (p. 172)
Var. tainanensis (Ohwi) T. Koyama; vouchers cited: MacGregor 441, MacGregor 537, Necker 59, Moore 223
Guam
Guam Island
Guam Island native
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1987) (p. 70)
var. tainanensis
Palau
Palau (Belau ) (main island group)
Babeldaob Island native
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1987) (p. 70)
var. tainanensis
Palau
Palau (Belau ) (main island group)
Babeldaob Island   Beleu National Museum (Republic of Palau. Koror.) (1978) (voucher ID: BNM 1051)
Taxon name on voucher: Fimbristylis autumnalis ssp. tainanensis (Ohwi) Koyama
Palau
Palau (Belau ) (main island group)
Koror (Oreor) Island native
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1987) (p. 70)
var. tainanensis
Philippines
Philippine Islands
Philippine Islands   Merrill, Elmer D. (1925) (p. 122)
In open wet places at low and medium altitudes.
Tonga
Tongatapu Group
Tongatapu Island   Whistler, W. A. (1992) (p. 85)
Vouchers cited: Graeffe 1221, Yuncker 15079, Yuncker 15294, Hotta 5099, Sykes 903, Buelow 103
Tonga
Tongatapu Group
Tongatapu Island   Yuncker, T. G. (1959) (pp. 71-72)
Vouchers cited: Yuncker 15079, Yuncker 15294
Tonga
Vava‘u Group
Niuatoputapu Island   Whistler, W. A. (1992) (p. 85)
Vouchers cited: Hurlimann 383, Buelow 1134, Buelow 1437
Tonga
Vava‘u Group
Niuatoputapu Island   Yuncker, T. G. (1959) (pp. 71-72)
Voucher cited: Hürlmann 383
Wallis and Futuna
Wallis and Futuna (Horne) Islands
Wallis (‘Uvea) Island native
Morat, Ph./Veillon, J.-M. (1985)
Morat & Veillon, 1985, cited in Meyer, 2007
Wallis and Futuna
Wallis and Futuna (Horne) Islands
Wallis and Futuna Islands   Whistler, W. A. (1988) (p. 42)
Pacific Rim
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
China
China
China (People's Republic of)   Zhengyi, Wu/Raven, Peter H./Deyuan, Hong (2013)
Cultivated ground, grasslands; below 600 m. Jiangxi (Wugong Shan), Liaoning.
China
China
Hong Kong native
Wu, Te-lin (2001) (p. 313)
As Fimbristylis complanata (Retz.) Link. In muddy seashore, wet places by streams or paddy fields.
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)
Japan
Japan
Japan (country) introduced
invasive
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Hokkaido, Honshu
Naturalized
Japan
Ryukyu Islands
Ryukyu Islands introduced
invasive
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Naturalized
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)
Taiwan
Taiwan Island
Taiwan Island   Zhengyi, Wu/Raven, Peter H./Deyuan, Hong (2013)
United States (west coast)
United States (west coast states)
USA (California) native
U.S. Dept. Agr., Nat. Res. Cons. 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
Canada (except British Colombia)
Canada
Canada (country) native
U.S. Dept. Agr., Nat. Res. Cons. Serv. (2013)
United States (continental except west coast)
United States (other states)
United States (other states) native
U.S. Dept. Agr., Nat. Res. Cons. Serv. (2013)
United States (continental except west coast)
United States (other states)
USA (Florida) native
U.S. Dept. Agr., Nat. Res. Cons. Serv. (2013)

Comments:  Varities: var. tainanensis (Ohwi), var. complanata (Retz.) Barros


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This page was created on 1 SEP 2002 and was last updated on 19 APR 2011.