Pacific Island Ecosystems at Risk (PIER)

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Eriochloa punctata
(L.) Desv. ex Ham., Poaceae
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Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Other Latin names:  Milium punctatum L.

Common name(s): [more details]

English: Louisiana cupgrass

Habit:  grass

Description:  "Cespitose annuals, culms numerous, erect, 5-15 dm tall, branching somewhat above base, glabrous to slightly puberulent, nodes puberulent.  Sheaths open, glabrous to puberulent, loosely clasping the stem, especially near base, margins overlapping, ciliate; ligule ca. 1 mm long, ciliate; blades flat, 25-40 cm long, 3-12 mm wide, smooth, sparsely pubescent, margins scabrous.  Inflorescences paniculate, composed of 6-8 racemes, the racemes alternate on the axis, appressed to ascending, 2.5-6 cm long, rachis flattened, ca. 0.5 mm wide, puberulent, winged, pedicels long-pilose at apex with hairs 2-3 mm long; spikelets 1-2 per rachis, ovoid, 4-5 mm long; glumes unequal, first glume purple to green, reduced, 0.3-0.4 mm long, forming a small bead-like cuff surrounding base of the spikelet above the point of disarticulation, second glume chartaceous, ovate, 4-5 mm long, long-pilose, 5-nerved, apex acuminate to aristate; first lemma ovate, 3-4 mm long, long-pilose, 5-nerved, apex acuminate; second lemma indurate, elliptic, slightly dorsally compressed, 2-2.5 mm long, glabrous, rugulose, margins clasping palea, apex mucronate; palea elliptic, ca. 2 mm long, similar in texture to the lemma, margins inrolled, apex rounded.  Caryopsis ellipsoid, dorsally compressed, 1.5-5 mm long"  (Wagner et al., 1999; p. 1546).

Description from GrassBase.

Habitat/ecology:  In Hawai‘i, "naturalized in wet, disturbed sites, 10-180 m"  (Wagner et al., 1999; p. 1546).

Propagation:  Seed

Native range:  Neotropics (Wagner et al., 1999; p. 1546).

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
Maui Island introduced
invasive
Oppenheimer, Hank L. (2003) (p. 21)
West Maui. Voucher cited: Oppenheimer H90002 (BISH)
State of Hawaii
Hawaiian Islands
Moloka‘i Island introduced
invasive
Oppenheimer, Hank L. (2003) (p. 21)
Voucher cited: Oppenheimer H70119 (BISH)
State of Hawaii
Hawaiian Islands
Ni‘ihau Island introduced
invasive
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 1546)
State of Hawaii
Hawaiian Islands
O‘ahu Island introduced
invasive
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 1546)
Voucher cited: Caum s.n. (BISH)
Pacific Rim
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
Chile (continental)
Chile
Chile (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
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)
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)
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)
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)
United States (other states) native
U.S. Dept. Agr., Nat. Res. Cons. 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 12 FEB 2007 and was last updated on 30 NOV 2008.