García-Barr, Poaceae |
Present on Pacific Islands? yes
Primarily a threat at high elevations? no
Common name(s): [more details]
Spanish: micay, pasto micael, pasto micay |
Habit: grass
Description: "Perennials growing in tufts or stoloniferous. Stems up to 150 cm x 4-8 mm, erect or decumbent and rooting, sparingly branched; nodes and internodes glabrous. Leaves cauline; sheath generally glabrous, rarely hairy, sometimes with a marginal fringe of hairs; collar frequently hairy at times glabrous; ligule 0.5-0.9 mm, fringed with hairs; leaves 15-38 cm x 12-18 mm, glabrous below, glabrous or sparsely hairy above, and fringed with hairs to the base, the apex is obtuse. Inflorescences 1-2, 10-12 cm, terminal and axillary; racemes 3-24, 6-16 cm, grow obliquely upwards, inferior racemes frequently branched, central axis of the inflorescence 0.4-0.7 mm wide, triquetrous, marginally scabrous and at times with elongated trichomes. Spikelets 2.2-2.8 mm, sparsely hairy; glume superior and lemma inferior 4-nerved adpressed hairs in the margins; floret superior equal length to the spikelet or up to 0.2 mm shorter, straw colored, apex is sparsely puberulent; anthers 1-1.5 mm."
"Black (1963) considered this to be a prostrate form of Axonopus scoparius. Despite these similarities the differences were sufficient to distinguish two species" (Pohl & Davidse, 1994). [translation provided by Chris Buddenhagen].
Spanish: "Perennes cespitosas o estoloniferas. Tallos hasta 150 cm x 4-8 mm, erectos o largamente decumbentes y enraizando, esparcidamente ramificados; entrenudos y nudos glabros. Hojas principalmente caulinares; vainas generalmente glabras, raramente pilosas, a veces ciliadas; cuello frecuentemente peloso o a veces glabro; ligula 0.5-0.9 mm, ciliolada; láminas 15-38 cm x 12-18 mm, glabras en el envés, blabras o esparcidamente pilosas en el haz, ciliadas hacia la base, el ápice obtuso. Inflorescencias 1-2, 10-12 cm, terminales y axilares; racimos 3-24, 6-16 cm, ascendentes, los inferiores frecuentemente ramificados, el raquis 0.4-0.7 mm de ancho, triquetro, marginalmente escabroso y a veces con unos cuantos tricomas alargados. Espiguillas 2.2-2.8 mm, esparcidamente pelosas; gluma superior y lema inferior 4-nervias, adpreso pelosas en los márgenes; flósculo superior tan largo como la espiguilla o hasta 0.2 mm más corto que ella, pajizo, el ápice esparcidamente puberulento; anteras 1-1.5 mm."
"Black (1963) considera a esta especie como una forma rastrera de Axonopus scoparius. A pesar de que indudablemente ambos taxa están cercanamente emparentado, los caracteres empleados para separar a estas especies son de la misma magnitud de aquellos usados para reconocer numerosos pares de especies cercanas en el género" (Pohl & Davidse, 1994; p. 358).
Description from GrassBase.
Habitat/ecology: "Cultivated for forage, along trails. 0-2200 m." (Pohl & Davidse, 1994).
"Pasto cultivado para forraje, orillas de caminos. 0-2200 m." (Pohl & Davidse, 1994; p. 358).
Propagation: Seed
Native range: "Colombia and Venezuela; introduced in Central America and other parts of South America, at least into Ecuador" (Pohl & Davidse, 1994).
"Colombia y O. Venezuela; introducia en Mesoamérica y en otras partes de Sudamérica, al menos hasta Ecuador" (Pohl & Davidse, 1994; p. 358).
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 |
Isabela Island |
introduced
invasive |
Charles Darwin Foundation (2008) |
Ecuador (Galápagos Islands)
Isabela Group |
Volcán Sierra Negra, Isabela Island |
introduced
invasive |
Charles Darwin Foundation (2008) |
Ecuador (Galápagos Islands)
San Cristóbal Group |
San Cristóbal Island |
introduced
invasive |
Charles Darwin Foundation (2008) |
Ecuador (Galápagos Islands)
Santa Cruz Group |
Santa Cruz Island |
introduced
invasive |
Charles Darwin Foundation (2008) |
Pacific Rim | |||
Country/Terr./St. & Island group |
Location |
Cited status &
Cited as invasive & Cited as cultivated & Cited as aboriginal introduction? |
Reference &
Comments |
South America (Pacific rim)
South America (Pacific rim) |
Colombia |
native
|
U.S. Dept. Agr., Agr. Res. Serv. (2013) |
Control: If you know of control methods for Axonopus micay, please let us know.