49. Alopecurus L. Por R.W. Pohl. Anuales o perennes, cespitosas o rizomatosas. Lígula una membrana; láminas lineares, aplanadas. Inflorescencia una panícula densa, cilíndrica a capitada, las espiguillas traslapadas. Espiguillas lateralmente comprimidas, con 1 flósculo bisexual; desarticulación por debajo de las glumas; glumas iguales, tan largas como el flósculo o más largas que él, 3-nervias, los márgenes unidos o libres en la base, marcadamente carinadas, las quillas generalmente ciliadas; lema membranácea, 5-nervia, carinada, con una arista insertada dorsalmente debajo de la mitad, los márgenes inferiores generalmente unidos, el ápice agudo o truncado; pálea ausente o muy pequeña; raquilla no prolongada; lodículas ausentes; estambres 3; estilo 1; estigmas 2; ovario glabro. Fruto una cariopsis comprimida; hilo punteado; endospermo sólido o raramente líquido. Aprox. 40 spp. Regiones frías o templadas del hemisferio norte y montañas de América tropical. La única especie en Mesoamérica es Alopecurus aequalis . Bibliografía: Parodi, L.R. Revista Fac. Agron. Veterin. 7: 345-369 (1931). Annual or perennial. Leaf blades linear, flat; ligule membranous. Inflorescence a spikelike panicle, densely cylindrical, spikelets numerous, closely packed; pedicels very short, apices cuplike. Spikelets protogynous, strongly laterally compressed, floret 1, falling entire from pedicel; rachilla extension absent; glumes equal, ± equaling and enclosing floret, broadly lanceolate to oblong, membranous to thinly leathery, prominently 3-veined, strongly keeled, keel usually ciliate, infrequently winged, lower margins almost free or connate for up to half their length, apex obtuse, acute or shortly awned; lemma broadly lanceolate to ovate, usually thinly membranous, keeled, obscurely 5-veined, smooth, glabrous, lower margins often connate, awned from lower back, apex truncate to acute; awn straight when short or geniculate when longer, column smooth, usually twisted at maturity, bristle scabrid; palea absent or very small. Lodicules absent; ovary glabrous. Caryopsis obliquely obovate in side view; endosperm sometimes liquid. Spikelets 1-fld, articulated below the glumes; pedicels conspicuously swollen at the joint; glumes equal, 3-veined, strongly compressed and keeled, ± connate at base, especially on the adaxial side; lemma thin and membranous, about as long as the glumes, 5-veined, the margins often ± connate, the midvein excurrent into an awn; palea in ours minute or none; low annuals and perennials with flat lvs, membranous ligule, and dense, cylindric or subcylindric, spike-like panicles. 25, N. Temp. Spikelets 1-fld, articulated below the glumes; pedicels conspicuously swollen at the joint; glumes equal, 3-veined, strongly compressed and keeled, ± connate at base, especially on the adaxial side; lemma thin and membranous, about as long as the glumes, 5-veined, the margins often ± connate, the midvein excurrent into an awn; palea in ours minute or none; low annuals and perennials with flat lvs, membranous ligule, and dense, cylindric or subcylindric, spike-like panicles. 25, N. Temp. 49. Alopecurus L. Por R.W. Pohl. Anuales o perennes, cespitosas o rizomatosas. Lígula una membrana; láminas lineares, aplanadas. Inflorescencia una panícula densa, cilíndrica a capitada, las espiguillas traslapadas. Espiguillas lateralmente comprimidas, con 1 flósculo bisexual; desarticulación por debajo de las glumas; glumas iguales, tan largas como el flósculo o más largas que él, 3-nervias, los márgenes unidos o libres en la base, marcadamente carinadas, las quillas generalmente ciliadas; lema membranácea, 5-nervia, carinada, con una arista insertada dorsalmente debajo de la mitad, los márgenes inferiores generalmente unidos, el ápice agudo o truncado; pálea ausente o muy pequeña; raquilla no prolongada; lodículas ausentes; estambres 3; estilo 1; estigmas 2; ovario glabro. Fruto una cariopsis comprimida; hilo punteado; endospermo sólido o raramente líquido. Aprox. 40 spp. Regiones frías o templadas del hemisferio norte y montañas de América tropical. La única especie en Mesoamérica es Alopecurus aequalis . Bibliografía: Parodi, L.R. Revista Fac. Agron. Veterin. 7: 345-369 (1931). Annual or perennial. Leaf blades linear, flat; ligule membranous. Inflorescence a spikelike panicle, densely cylindrical, spikelets numerous, closely packed; pedicels very short, apices cuplike. Spikelets protogynous, strongly laterally compressed, floret 1, falling entire from pedicel; rachilla extension absent; glumes equal, ± equaling and enclosing floret, broadly lanceolate to oblong, membranous to thinly leathery, prominently 3-veined, strongly keeled, keel usually ciliate, infrequently winged, lower margins almost free or connate for up to half their length, apex obtuse, acute or shortly awned; lemma broadly lanceolate to ovate, usually thinly membranous, keeled, obscurely 5-veined, smooth, glabrous, lower margins often connate, awned from lower back, apex truncate to acute; awn straight when short or geniculate when longer, column smooth, usually twisted at maturity, bristle scabrid; palea absent or very small. Lodicules absent; ovary glabrous. Caryopsis obliquely obovate in side view; endosperm sometimes liquid.General Information
Source: [
Source: [
Northeastern Flora
General InformationFlora Mesoamericana
General InformationFlora of China @ efloras.org
General Information
