Difference between revisions of "Rottboellia cochinchinensis"
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|synonyms={{Treatment/ID/Synonym | |synonyms={{Treatment/ID/Synonym | ||
|name=Rottboellia exaltata | |name=Rottboellia exaltata | ||
| − | |authority= | + | |authority= |
| + | |rank=species | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Manisuris exaltata | |name=Manisuris exaltata | ||
| − | |authority= | + | |authority= |
| + | |rank=species | ||
}} | }} | ||
|hierarchy=Poaceae;Poaceae subfam. Panicoideae;Poaceae tribe Andropogoneae;Rottboellia;Rottboellia cochinchinensis | |hierarchy=Poaceae;Poaceae subfam. Panicoideae;Poaceae tribe Andropogoneae;Rottboellia;Rottboellia cochinchinensis | ||
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-->{{Treatment/Body | -->{{Treatment/Body | ||
|distribution=Puerto Rico;Ga.;Tex.;La.;N.C.;Ark.;Miss.;Ind.;Fla. | |distribution=Puerto Rico;Ga.;Tex.;La.;N.C.;Ark.;Miss.;Ind.;Fla. | ||
| − | |discussion=<p>Rottboellia cochinchinensis is a native of southeast Asia. The species is considered one of the world's worst weeds, and is classified as a noxious weed by the U.S. Department of Agriculture. It is established in the southeastern United States, and has been reported from scattered locations elsewhere in the contiguous United States. In Africa, it is controlled by tillage or by fire, followed by shallow, then deep, plowing (Hall and Patterson 1992). 'Itchgrass' aptly describes the effects of the hairs on the skin.</p> | + | |discussion=<p><i>Rottboellia cochinchinensis</i> is a native of southeast Asia. The species is considered one of the world's worst weeds, and is classified as a noxious weed by the U.S. Department of Agriculture. It is established in the southeastern United States, and has been reported from scattered locations elsewhere in the contiguous United States. In Africa, it is controlled by tillage or by fire, followed by shallow, then deep, plowing (Hall and Patterson 1992). 'Itchgrass' aptly describes the effects of the hairs on the skin.</p> |
|tables= | |tables= | ||
|references= | |references= | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Rottboellia cochinchinensis | name=Rottboellia cochinchinensis | ||
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|authority=(Lour.) Clayton | |authority=(Lour.) Clayton | ||
|rank=species | |rank=species | ||
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|basionyms= | |basionyms= | ||
|family=Poaceae | |family=Poaceae | ||
| − | |illustrator=Linda A. Vorobik | + | |illustrator=Linda A. Vorobik;Hana Pazdírková |
| + | |illustration copyright=Utah State University | ||
|distribution=Puerto Rico;Ga.;Tex.;La.;N.C.;Ark.;Miss.;Ind.;Fla. | |distribution=Puerto Rico;Ga.;Tex.;La.;N.C.;Ark.;Miss.;Ind.;Fla. | ||
|reference=None | |reference=None | ||
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|publication year= | |publication year= | ||
|special status= | |special status= | ||
| − | |source xml=https:// | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V25/V25_1651.xml |
|subfamily=Poaceae subfam. Panicoideae | |subfamily=Poaceae subfam. Panicoideae | ||
|tribe=Poaceae tribe Andropogoneae | |tribe=Poaceae tribe Andropogoneae | ||
Revision as of 21:35, 16 December 2019
Culms developing prop roots from the lower nodes. Sheaths with 1-3 mm, stiff, papillose-based hairs; ligules 1-1.3 mm, light brown; blades (9)20-50(60) cm long, 10-20(25) mm wide, glabrous abaxially, adaxial surfaces mostly sparsely pubes¬cent, densely pubescent behind the ligules, hairs papillose-based. Rames (3)6-15 cm long, 2-4 mm wide; internodes 6-12 mm. Sessile spikelets: lower glumes 3.5-7 mm long, 1.4-2 mm wide, convex to flat, 11-13(15)-veined, apices bifid; upper glumes 5-6.2 mm, navicular, almost completely enclosing the florets, (13) 15-17-veined; anthers of lower florets 2.2-2.3 mm; anthers of upper florets 1.2-2.1 mm; stigmas purple. Pedicels 3-6.5 mm long, 1.5-2.2 mm wide, flat. Pedicellate spikelets 3-8 mm, sterile. Caryopses 3-4 mm long, 2-2.2 mm wide. 2n = 20, 40.
Distribution
Puerto Rico, Ga., Tex., La., N.C., Ark., Miss., Ind., Fla.
Discussion
Rottboellia cochinchinensis is a native of southeast Asia. The species is considered one of the world's worst weeds, and is classified as a noxious weed by the U.S. Department of Agriculture. It is established in the southeastern United States, and has been reported from scattered locations elsewhere in the contiguous United States. In Africa, it is controlled by tillage or by fire, followed by shallow, then deep, plowing (Hall and Patterson 1992). 'Itchgrass' aptly describes the effects of the hairs on the skin.
Selected References
None.