Present on Pacific Islands?  yes

Threat only at high elevations?  no

Other Latin names:  Tripsacum hermaphroditum L.

Common name(s): [more details]

English: old-field grass

Habit:  grass

Description:  "Annual; culms glabrous, erect or ascending from geniculate or decumbent base and usually branching and rooting from base and lower nodes, 15-50 cm long; sheaths shorter than internodes, glabrous or papillose-hirsute; ligule membranous, brownish, 2-3 mm long; blades flat, 5-20 cm long, 3-8 mm wide, glabrous or more or less pubescent; racemes 5-10 cm long, erect; burs 5-7 mm long, of 4 spikelets; first glume acute to acuminate, margins minutely scabrous; caryopsis as in Panicum, dorsally flattened and with punctate hilum, the embryo about two-thirds its length"  (Wiggins & Porter, 1971; pp. 825-827).

Description from World Grass Species.

Habitat/ecology:  "A common weedy species occurring throughout tropical America from sea level to about 2,000 m." (Wiggins & Porter, 1971; pp. 825-827).

Propagation:  Seed

Native range:  Mexico, West Indies, Central America, northern 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) Fernandina Group	Fernandina Island	probably introduced invasive	Charles Darwin Research Station (2005)
Ecuador (Galápagos Islands) Floreana Group	Floreana Island	probably introduced invasive	Charles Darwin Research Station (2005)
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) San Cristóbal Group	San Cristóbal 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) Santa Fé Group	Santa Fé Island	probably introduced invasive	Charles Darwin Research Station (2005)
Ecuador (Galápagos Islands) Santiago Group	Santiago Island	probably introduced invasive	Charles Darwin Research Station (2005)
Ecuador (Galápagos Islands) Wolf Islands	Wolf 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. (2007)
Costa Rica Costa Rica	Costa Rica (Republic of)	native	U.S. Dept. Agr., Agr. Res. Serv. (2007)
Ecuador (Mainland) Ecuador	Ecuador (Republic of) (continental)	native	U.S. Dept. Agr., Agr. Res. Serv. (2007)
El Salvador El Salvador	El Salvador (Republic of)	native	U.S. Dept. Agr., Agr. Res. Serv. (2007)
Guatemala Guatemala	Guatemala (Republic of)	native	U.S. Dept. Agr., Agr. Res. Serv. (2007)
Honduras Honduras	Honduras (Republic of)	native	U.S. Dept. Agr., Agr. Res. Serv. (2007)
Mexico Mexico	Mexico (United Mexican States)	native	U.S. Dept. Agr., Agr. Res. Serv. (2007)
Nicaragua Nicaragua	Nicaragua (Republic of)	native	U.S. Dept. Agr., Agr. Res. Serv. (2007)
Panama Panama	Panama (Republic of)	native	U.S. Dept. Agr., Agr. Res. Serv. (2007)
Perú Perú	Perú (Republic of)	native	U.S. Dept. Agr., Agr. Res. Serv. (2007)

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)	USA (Florida)	introduced	U.S. Dept. Agr., Agr. Res. Serv. (2007)

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

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

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

References:

Charles Darwin Research Station. 2005. CDRS Herbarium records.

U.S. Dept. Agr., Agr. Res. Serv. 2007. 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.