Pacific Island Ecosystems at Risk (PIER)

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Microlaena stipoides
(Labill.) R.Br., Poaceae
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Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Other Latin names:  Ehrharta stipoides Labill.

Common name(s): [more details]

English: meadow ricegrass, weeping grass

French: faux-stipe, microléne

Habit:  grass

Description:  "Slender rhizomatous perennials; culms ascending or erect, usually decumbent at base, 30-75 cm tall, glabrous.  Sheaths 2-6 cm long, shorter than internodes, glabrous or retrorsely scabrous; ligule membranous, 0.2-0.5 mm long, margins erose; blades flat, 3-8 (-14) cm long, 2-3 mm wide, glabrous or scaberulous, margins scabrous.  Inflorescences paniculate, suberect to nodding, (4-) 10-19 cm long, narrow, usually unbranched; spikelets widely spaced, paired or solitary, chasmogamous or cleistogamous, appressed along the slender axis, each one ca 10 mm long (excluding awns), pedicels 1-2 mm long, rachilla somewhat elongate above glumes and between sterile lemmas; glumes membranous, nerveless, first glume 0.2-0.5 mm long, apex acute, second glume 0.5-0.7 mm long, apex acute or bifid; sterile lemma similar to glumes, coriaceous, obscurely 5-nerved, the nerves scaberulous, margins membranous, apex with a scabrous awn 8-12 mm long, callus conspicuous, appressed silky pilose, the hairs ca 1 mm long; fertile lemma 5-6 mm long, enclosed within margins of uppermost sterile lemma, obscurely 7-nerved, somewhat keeled, scabrous on upper part of keel, apex apiculate, palea membranous, narrow, linear, shorter than lemma, 1-nerved, keeled, the keel sparsely ciliate, margins hyaline.  Caryopsis yellow, narrow, somewhat compressed, 5-6 mm long"  (Wagner et al., 1999; pp. 1536, 1908).

Description from GrassBase.

Habitat/ecology:  In Hawai‘i, "naturalized in openings in wet forest and other moist, shaded sites, 20-1,400 m" (Wagner et al., 1999; p. 1536).

Propagation:  Seed

Native range:  Australia, Indonesia, New Zealand, New Guinea and the Philippines.

Presence:

Pacific
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
Australia (Pacific offshore islands)
Lord Howe Island
Lord Howe Island native
Orchard, Anthony E., ed. (1994) (p. 22)
Voucher cited: H.T. Clifford s.n. (NSW)
Australia (Pacific offshore islands)
Norfolk Islands
Norfolk Island native
Orchard, Anthony E., ed. (1994) (p. 12)
Vouchers cited: F.C. Allen 55 (CHR, K); 1902, J.H. Maiden & J.L. Boorman (NSW)
State of Hawaii
Hawaiian Islands
Hawai‘i (Big) Island introduced
invasive
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 1536)
Voucher cited: Hitchcock 14465 (BISH)
State of Hawaii
Hawaiian Islands
Kaho‘olawe Island introduced
invasive
Herbst, Derral R./Clayton, W. D. (1998) (p. 25)
Voucher cited: Ellshoff 196 (BISH)
State of Hawaii
Hawaiian Islands
Kaua‘i Island introduced
invasive
Lorence, David H./Flynn, Timothy W./Wagner, Warren L. (1995) (p. 45)
Vouchers cited: T. Flynn 683 (PTBG), W.L. Wagner et al. 4944 (BISH, US), T. Flynn 1093 (BISH, PTBG)
Naturalized at higher elevations.
State of Hawaii
Hawaiian Islands
Maui Island introduced
invasive
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 1536)
State of Hawaii
Hawaiian Islands
Moloka‘i Island introduced
invasive
Wysong, Michael/Hughes, Guy/Wood, K. R. (2007) (p. 6)
Voucher cited: Hughes 1132 (BISH)
State of Hawaii
Hawaiian Islands
O‘ahu Island introduced
invasive
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 1536)
New Zealand (offshore islands)
Kermadec Islands
Raoul Island native
Sykes, W. R. (1977) (p. 171)
New Zealand (offshore islands)
Kermadec Islands
Raoul Island native
Edgar, E./Connor, H. (2000) (p. 51)
"Open lowland forest and manuka-kanuka scrub, ruderal and in rough pasture; sea level to 1300 m".
Papua New Guinea
Papua New Guinea (eastern New Guinea Island)
Papua New Guinea (eastern New Guinea Island)   Henty, E. E. (1969) (p. 125)
Widely spread in highland regions at altitudes from 7000 to 8000 feet, mostly in sheltered damp situations.
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)
Philippines
Philippine Islands
Philippine Islands   Merrill, Elmer D. (1925) (p. 78)
On open slopes and ridges, along mountain trails, etc., altitude 1,800 to 2,300 m.
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)
Northern Territory native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Australia
Australia (continental)
Queensland native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Indonesia
Indonesia
Indonesia (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
New Zealand
New Zealand
New Zealand (country) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
New Zealand
New Zealand
New Zealand (country) native
Edgar, E./Connor, H. (2000) (p. 51)
"Open lowland forest and manuka-kanuka scrub, ruderal and in rough pasture; sea level to 1300 m".
Indian Ocean
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
La Réunion (France)
La Réunion Island
La Réunion Island introduced
invasive
Lavergne, Christophe (2006)
"Très envahissant"
La Réunion (France)
La Réunion Island
La Réunion Island introduced
invasive
Comité français de l'Union Internationale pour la Conservation de la Nature en France (2013)
Naturalisée, envahissant.

Additional information:
Additional online information about Microlaena stipoides is available from the Hawaiian Ecosystems at Risk project (HEAR).

Information about Microlaena stipoides as a weed (worldwide references) may be available from the Global Compendium of Weeds (GCW).

Taxonomic information about Microlaena stipoides may be available from the Germplasm Resources Information Network (GRIN).

References:

Comité français de l'Union Internationale pour la Conservation de la Nature en France. 2013. Les espéces envahissantes en outre-mer (online resource).

Edgar, E./Connor, H. 2000. Flora of New Zealand, vol. V: Gramineae. Manaaki Whenua Press. .

Henty, E. E. 1969. A manual of the grasses of New Guinea. Department of Forests, Division of Botany, Botany Bull. No. 1. Lae, New Guinea. 215 pp.

Herbst, Derral R./Clayton, W. D. 1998. Notes on the grasses of Hawai‘i: new records, corrections, and name changes. In: Evenhuis, Neal L. and Miller, Scott, E., eds. Records of the Hawaii Biological Survey for 1997. Part 1: Articles. Bishop Museum Occasional Papers. 55:17-38.

Lavergne, Christophe. 2006. List des especes exotiques envahissantes a La Reunion. Unpublished manuscript (Excel file). .

Lorence, David H./Flynn, Timothy W./Wagner, Warren L. 1995. Contributions to the flora of Hawai‘i. III. New additions, range extensions, and rediscoveries of flowering plants. In: Evenhuis, Neal L. and Miller, Scott, E., eds. Records of the Hawaii Biological Survey for 1994. Part 1: Articles. Bishop Museum Occasional Papers. 41:19-58.

Merrill, Elmer D. 1925. An enumeration of Philippine flowering plants, vol. 1 [reprint]. Bureau of Printing, Manila. 463 pp.

Orchard, Anthony E., ed. 1994. Flora of Australia. Vol. 49, Oceanic islands 1. Australian Government Publishing Service, Canberra.

Sykes, W. R. 1977. Kermadec Islands flora: an annotated checklist. New Zealand Department of Scientific and Industrial Research Bulletin 219, Wellington. 216 pp.

U.S. Dept. Agr., Agr. Res. Serv. 2013. National Genetic Resources Program. Germplasm Resources Information Network (GRIN). Online searchable database.

Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. 1999. Manual of the flowering plants of Hawaii. Revised edition. Bernice P. Bishop Museum special publication. University of Hawai‘i Press/Bishop Museum Press, Honolulu. 1919 pp. (two volumes).

Wysong, Michael/Hughes, Guy/Wood, K. R. 2007. New Hawaiian plant records for the island of Moloka‘i. In: Evenhuis, Neal L. and Eldredge, Lucias G., eds. Records of the Hawaii Biological Survey for 2006. Part 2: Notes. Bishop Museum Occasional Papers 96:1-8.


Need more info? Have questions? Comments? Information to contribute? Contact PIER! (pier@hear.org)

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This page was created on 1 JAN 1999 and was last updated on 30 NOV 2008.