Present on Pacific Islands?  yes

Threat only at high elevations?  no

Other Latin names:  Panicum nemorosum Sw.

Common name(s): [more details]

English: creeping bedgrass

Habit:  grass

Description:  "Culms spreading or creeping, much branched, rooting at nodes, glabrous or somewhat pubescent, nodes sometimes pilose, fertile shoots decumbent or rising 15-30 cm; sheaths shorter than internodes, more or less pilose or nearly glabrous, margins and collar villous; blades thin, ovate-lanceolate, 3-7 cm long, 1-2 cm wide, clasping at the usually asymmetric base, more or less hispid and scaberulous on both surfaces; panicles terminal and axillary, 2-8 cm long, the few branches spreading or appressed; axis, branches, and short pedicels angled, scabrous, branches villous at base, spikelets 2.5-3 (3.5) mm long on pedicels 1-2 mm long or less; first glume 3-nerved,k attenuate or awn-tipped, as long as or slightly exceeding the second, glabrous or with a few long hairs on margin, keel scabrous; second glume and sterile lemma 5-nerved, glabrous, the glume a little longer, acuminate, scabrous on keel; sterile lemma smooth on keel, acute or rounded at apex, palea well developed and often bearing staminate flower; fertile lemma about 2 mm long, yellowish, smooth and shining, scars at base about 0.3 mm long, margins enrolled" (Wiggins & Porter, 1971; p. 856).

Description from GrassBase.

Habitat/ecology:  "In shady habitats" (Wiggins & Porter, 1971; p. 856).

Propagation:  Seed

Native range:  Mexico; West Indies; Central and South America (GRIN).

Presence:

Pacific
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
Ecuador (Galápagos Islands) Isabela Group	Volcan Alcedo	probably introduced invasive	Charles Darwin Research Station (2005)
Ecuador (Galápagos Islands) Isabela Group	Volcan Sierra Negra	probably introduced invasive	Charles Darwin Research Station (2005)
Ecuador (Galápagos Islands) Pinta Group	Pinta Island	probably introduced invasive	Charles Darwin Research Station (2005)
Ecuador (Galápagos Islands) Santa Cruz Group	Santa Cruz Island	probably introduced invasive	Charles Darwin Research Station (2005)
Ecuador (Galápagos Islands) Santiago Group	Santiago Island	probably introduced invasive	Charles Darwin Research Station (2005)

Pacific Rim
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
Colombia Colombia	Colombia (Republic of)	native	U.S. Dept. Agr., Agr. Res. Serv. (2008)
Costa Rica Costa Rica	Costa Rica (Republic of)	native	U.S. Dept. Agr., Agr. Res. Serv. (2008)
Ecuador (Mainland) Ecuador	Ecuador (Republic of) (continental)	native	U.S. Dept. Agr., Agr. Res. Serv. (2008)
El Salvador El Salvador	El Salvador (Republic of)	native	U.S. Dept. Agr., Agr. Res. Serv. (2008)
Guatemala Guatemala	Guatemala (Republic of)	native	U.S. Dept. Agr., Agr. Res. Serv. (2008)
Honduras Honduras	Honduras (Republic of)	native	U.S. Dept. Agr., Agr. Res. Serv. (2008)
Mexico Mexico	Mexico (United Mexican States)	native	U.S. Dept. Agr., Agr. Res. Serv. (2008)
Nicaragua Nicaragua	Nicaragua (Republic of)	native	U.S. Dept. Agr., Agr. Res. Serv. (2008)
Panama Panama	Panama (Republic of)	native	U.S. Dept. Agr., Agr. Res. Serv. (2008)
Perú Perú	Perú (Republic of)	native	U.S. Dept. Agr., Agr. Res. Serv. (2008)

Comments:  Probably not native to the Galápagos Islands, possibly introduced, per Charles Darwin Research Station.

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

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

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

Other Latin names:  Panicum nemorosum Sw.

References:

Charles Darwin Research Station. 2005. CDRS Herbarium records.

U. S. Government. 2006. Integrated Taxonomic Information System (ITIS) (on-line resource).

U.S. Dept. Agr., Agr. Res. Serv. 2008. National Genetic Resources Program. Germplasm Resources Information Network (GRIN). Online searchable database.

Wiggins, I. L./Porter, D. M. 1971. Flora of the Galapágos Islands. Stanford University Press. 998 pp.