Difference between revisions of "Microstegium vimineum"
FNA>Volume Importer |
imported>Volume Importer |
||
| (3 intermediate revisions by 2 users not shown) | |||
| Line 4: | Line 4: | ||
|publications= | |publications= | ||
|common_names=Nepalese browntop | |common_names=Nepalese browntop | ||
| + | |special_status={{Treatment/ID/Special_status | ||
| + | |code=I | ||
| + | |label=Introduced | ||
| + | }} | ||
|basionyms= | |basionyms= | ||
|synonyms={{Treatment/ID/Synonym | |synonyms={{Treatment/ID/Synonym | ||
| Line 20: | Line 24: | ||
-->{{Treatment/Body | -->{{Treatment/Body | ||
| − | |distribution=Conn.;N.J.;N.Y.;D.C;W.Va.;Fla.;Puerto Rico;Tex.;La.;Tenn.;N.C.;S.C.;Pa.;Va.;Del.;Md.;Ala.;Ark.;Ill.;Ga.;Ind.;Mass.;Ohio;Mo.;Miss.;Ky. | + | |distribution=Conn.;N.J.;N.Y.;D.C.;W.Va.;Fla.;Puerto Rico;Tex.;La.;Tenn.;N.C.;S.C.;Pa.;Va.;Del.;Md.;Ala.;Ark.;Ill.;Ga.;Ind.;Mass.;Ohio;Mo.;Miss.;Ky. |
|discussion=<p><i>Microstegium vimineum</i> was introduced to Tennessee from Asia around 1919 and is now established in much of the eastern United States. Although often associated with forested and wetland areas, it also does well in many disturbed areas. In suitable habitats it quickly spreads by rooting from its prostrate culms, forming dense, monospecific stands. It is sometimes confused with <i>Leersia virginica</i> Willd., but differs from that species in its glabrous cauline nodes and the presence of hairs at the summit of the leaf sheaths. In addition, <i>M. vimineum</i> flowers in late September and October and is clearly a member of the Andropogoneae, whereas L. viriginica flowers in June through July and is a member of the Oryzeae.</p> | |discussion=<p><i>Microstegium vimineum</i> was introduced to Tennessee from Asia around 1919 and is now established in much of the eastern United States. Although often associated with forested and wetland areas, it also does well in many disturbed areas. In suitable habitats it quickly spreads by rooting from its prostrate culms, forming dense, monospecific stands. It is sometimes confused with <i>Leersia virginica</i> Willd., but differs from that species in its glabrous cauline nodes and the presence of hairs at the summit of the leaf sheaths. In addition, <i>M. vimineum</i> flowers in late September and October and is clearly a member of the Andropogoneae, whereas L. viriginica flowers in June through July and is a member of the Oryzeae.</p> | ||
|tables= | |tables= | ||
| Line 38: | Line 42: | ||
|illustrator=Linda A. Vorobik;Annaliese Miller | |illustrator=Linda A. Vorobik;Annaliese Miller | ||
|illustration copyright=Utah State University | |illustration copyright=Utah State University | ||
| − | |distribution=Conn.;N.J.;N.Y.;D.C;W.Va.;Fla.;Puerto Rico;Tex.;La.;Tenn.;N.C.;S.C.;Pa.;Va.;Del.;Md.;Ala.;Ark.;Ill.;Ga.;Ind.;Mass.;Ohio;Mo.;Miss.;Ky. | + | |distribution=Conn.;N.J.;N.Y.;D.C.;W.Va.;Fla.;Puerto Rico;Tex.;La.;Tenn.;N.C.;S.C.;Pa.;Va.;Del.;Md.;Ala.;Ark.;Ill.;Ga.;Ind.;Mass.;Ohio;Mo.;Miss.;Ky. |
|reference=None | |reference=None | ||
|publication title= | |publication title= | ||
|publication year= | |publication year= | ||
| − | |special status= | + | |special status=Introduced |
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/200273ad09963decb8fc72550212de541d86569d/coarse_grained_fna_xml/V25/V25_1526.xml |
|subfamily=Poaceae subfam. Panicoideae | |subfamily=Poaceae subfam. Panicoideae | ||
|tribe=Poaceae tribe Andropogoneae | |tribe=Poaceae tribe Andropogoneae | ||
Latest revision as of 17:57, 11 May 2021
Plants annual. Culms 40-100 cm tall, 1-1.5 mm thick, freely-branching, lower portions prostrate, rooting at the nodes, terminal portions and flowering branches erect; nodes glabrous. Sheaths shorter than the internodes, mostly glabrous or sparsely pubescent above, margins ciliate, becoming pilose at the throat; ligules 0.5-0.8 mm, truncate; blades 3-10 cm long, 8-15 mm wide, glabrous or sparsely pubescent, bases cuneate, midveins white, apices attenuate, acute. Cleistogamous inflorescences concealed in the upper sheaths; chasmogamous inflorescence exserted, of (1)2-4(6) racemose to subdigitate, erect to ascending rames; rames 3-7 cm, glaucous-green; internodes 3.5-5 mm, gradually widened above, ciliate. Spikelets 3.7-6.5 mm. Lower glumes 2-keeled, subtruncate to shallowly 2-toothed; upper glumes acute; upper lemmas usually awned, awns 2-5(15) mm, often concealed by the glumes; anthers 3, 0.7-1 mm. Pedicels 3-4 mm. 2n = 40.
Distribution
Conn., N.J., N.Y., D.C., W.Va., Fla., Puerto Rico, Tex., La., Tenn., N.C., S.C., Pa., Va., Del., Md., Ala., Ark., Ill., Ga., Ind., Mass., Ohio, Mo., Miss., Ky.
Discussion
Microstegium vimineum was introduced to Tennessee from Asia around 1919 and is now established in much of the eastern United States. Although often associated with forested and wetland areas, it also does well in many disturbed areas. In suitable habitats it quickly spreads by rooting from its prostrate culms, forming dense, monospecific stands. It is sometimes confused with Leersia virginica Willd., but differs from that species in its glabrous cauline nodes and the presence of hairs at the summit of the leaf sheaths. In addition, M. vimineum flowers in late September and October and is clearly a member of the Andropogoneae, whereas L. viriginica flowers in June through July and is a member of the Oryzeae.
Selected References
None.