Pacific Island Ecosystems at Risk (PIER)

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Fimbristylis aestivalis
(Retz.) Vahl, Cyperaceae
No images for this taxon


Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Other Latin names:  Scirpus aestivalis Retz.

Common name(s): [more details]

Chinese: xia piao fu cao

English: summer fimbry

French: fimbristylis d'été

Habit:  sedge

Description:  "Small annuals with fibrous roots; culms tufted, 3-12 cm tall, 0.3-0.5 mm in diameter.  Leaves few, blades linear-filiform, much shorter than the culm, 0.4-1 mm wide, glabrate to sparsely pilose, apex gradually acuminate; sheaths pale to yellowish brown, 5-15 mm long, usually pubescent; ligule absent.  Inflorescences compound, lax, 2-4 cm long and wide, rays 3-7, filiform, 0.5-2.7 cm long, each one terminated by a single spikelet; involucral bracts 2-3, shorter than inflorescence, pilose or glabrate; spikelets 8-15-flowered, ovoid to narrowly ovoid, 2.5-5 mm long, 1-1.5 mm wide, subacute; glumes yellowish brown, membranous, ovate, 1-1.2 mm long, the keel green, apex mucronulate; style filiform, glabrous at base, occasionally ciliolate below stigmas; stigmas 2.  Achenes yellow, obovoid, biconvex, 0.6-0.7 mm long, faintly cancellate, apex rounded, base short-stipitate"  (Wagner et al., 1999; p. 1404).

Habitat/ecology:  In Hawai‘i, "apparently only sparingly naturalized and known from 2 collections from ca. 3 m in taro paddies...and one collection from a pond"  (Wagner et al., 1999; p. 1404).

Propagation:  Seed

Native range:  "Native from Japan and China south to India, Malesia, and Australia" (Wagner et al., 1999; p. 1404).

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
Oppenheimer, Hank L./Bartlett, Randal T. (2002) (p. 7)
Voucher cited: Oppenheimer H40020 (BISH)
State of Hawaii
Hawaiian Islands
Kaua‘i Island introduced
invasive
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 1404)
Voucher cited: Herbst 5953 (BISH)
New Caledonia
New Caledonia
New Caledonia Islands native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Papua New Guinea
Papua New Guinea (eastern New Guinea Island)
Papua New Guinea (eastern New Guinea Island) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Philippines
Philippine Islands
Philippine Islands native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
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
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Australia
Australia (continental)
Australia (continental) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
South Australia, Victoria
Australia
Australia (continental)
Northern Territory native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Australia
Australia (continental)
Queensland native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
China
China
Hong Kong native
Wu, Te-lin (2001) (p. 313)
In marshes, paddy fields and other wet places.
Indonesia
Indonesia
Indonesia (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Japan
Japan
Japan (country) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Malaysia
Malaysia
Malaysia (country of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Taiwan
Taiwan Island
Taiwan Island native
Zhengyi, Wu/Raven, Peter H./Deyuan, Hong (2013)
Grasslands, marshy places, paddy fields; 400-2200 m.


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This page was created on 11 MAR 2007 and was last updated on 5 SEP 2017.