Pacific Island Ecosystems at Risk (PIER)

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Panicum virgatum
L., Poaceae
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Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Risk assessment results:  High risk, score: 11 (Go to the risk assessment)

Common name(s): [more details]

Chinese: liu zhi ji

English: Blackwell switch grass, old switch panic grass, switchgrass

French: millet effilé, millet vivace, panic érigé, panic vierge

Spanish: cortadero

Habit:  grass

Description:  "Rhizomatous perennials 60-200 cm tall, rhizomes well-developed, scaly.  Ligule a ciliate membrane, 1.8-3.2 mm long; blades 10-60 cm long, 0.3-1.5 cm wide, usually glabrous.  Panicles 15-55 cm long; spikelets 4-5.5 mm long, ovoid, acuminate, glabrous; first glume 2-4 mm long, 2/3 - 3/4 as long as spikelet, 5-nerved, acuminate, second glume 5-7-nerved, longer than first lemma; first floret staminate, first lemma 5-7-nerved, first palea as long as first lemma; second floret 2.8-3.4 mm long, obtuse, glossy, smooth; anthers 2-3 mm long"  (Wagner et al., 1999; p. 1574).

Description of Panicum virgatum from Kew Gardens' GrassBase

Habitat/ecology:  (no habitat/ecology info known by PIER)

Propagation:  Seed

Native range:  "Native to the North America"  (Wagner et al., 1999; p. 1574). North America, Mesoamerica, Cuba (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
O‘ahu Island   Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 1574)
Voucher cited: Collector unknown s.n. (BISH)
Single naturalized collection, present status unknown.
State of Hawaii
Hawaiian Islands
O‘ahu Island extirpated
Snow, Neil/Lau, Alex (2010) (p. 52)
Probably never naturalized.
Pacific Rim
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
Central America
Central America (Pacific rim)
El Salvador (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Central America
Central America (Pacific rim)
Guatemala (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Central America
Central America (Pacific rim)
Honduras (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Central America
Central America (Pacific rim)
Nicaragua (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Central America
Central America (Pacific rim)
Panama (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Mexico
Mexico
Mexico (United Mexican States) 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 5 FEB 2007 and was last updated on 16 MAY 2017.