Difference between revisions of "Digitaria violascens"
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|distribution=Puerto Rico;Mass.;Miss.;Tex.;Ind.;La.;Ala.;Tenn.;N.C.;S.C.;Pacific Islands (Hawaii);Ga.;Okla.;Ky.;Fla.;Ark. | |distribution=Puerto Rico;Mass.;Miss.;Tex.;Ind.;La.;Ala.;Tenn.;N.C.;S.C.;Pacific Islands (Hawaii);Ga.;Okla.;Ky.;Fla.;Ark. | ||
| − | |discussion=<p>Digitaria violascens is a weedy species that is native to tropical regions of the Eastern Hemisphere. It is now established in the Flora region, primarily in the south-eastern United States, and in Mexico and Central America. It grows in disturbed sites.</p> | + | |discussion=<p><i>Digitaria violascens</i> is a weedy species that is native to tropical regions of the Eastern Hemisphere. It is now established in the Flora region, primarily in the south-eastern United States, and in Mexico and Central America. It grows in disturbed sites.</p> |
|tables= | |tables= | ||
|references= | |references= | ||
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name=Digitaria violascens | name=Digitaria violascens | ||
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|authority=Link | |authority=Link | ||
|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;Mass.;Miss.;Tex.;Ind.;La.;Ala.;Tenn.;N.C.;S.C.;Pacific Islands (Hawaii);Ga.;Okla.;Ky.;Fla.;Ark. | |distribution=Puerto Rico;Mass.;Miss.;Tex.;Ind.;La.;Ala.;Tenn.;N.C.;S.C.;Pacific Islands (Hawaii);Ga.;Okla.;Ky.;Fla.;Ark. | ||
|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_1072.xml |
|subfamily=Poaceae subfam. Panicoideae | |subfamily=Poaceae subfam. Panicoideae | ||
|tribe=Poaceae tribe Paniceae | |tribe=Poaceae tribe Paniceae | ||
Revision as of 20:30, 16 December 2019
Plants annual or of indefinite duration. Culms 15-60 cm, erect, usually not branching from the upper nodes; nodes 3-4. Sheaths glabrous or sparsely pubescent; ligules 0.6-2.5 mm; blades 1.5-9 cm long, 3-5 mm wide, glabrous, with papillose-based hairs basally. Panicles with 2-7 spikelike primary branches in 1-2 verticils; primary branches 3-12 cm, erect to ascend¬ing, axes 0.6-1 mm wide, wing-margined, wings at least 1/2 as wide as the midribs, lower and middle portions of the branches bearing spikelets in groups of 3(4, 5); secondary branches rarely present; axillary inflorescences absent. Spikelets 1.2-1.7 mm, homomorphic, narrowly elliptic. Lower glumes absent or a veinless, membranous rim; upper glumes 1.2-1.4 mm, 1/2 as long as to almost equaling the upper lemmas, 3-veined, appressed-pubescent, hairs minutely verrucose; lower lemmas 1.2-1.7 mm, 5-7-veined, veins equally spaced, region between the 2 inner lateral veins and the margins appressed-pubescent, hairs 0.3-0.5 mm, smooth or minutely verrucose (use 50x magnification), verrucose hairs most abundant near the lemma bases; upper lemmas light brown when immature, dark brown at maturity; anthers 0.4-0.6 mm. 2n = 36.
Distribution
Puerto Rico, Mass., Miss., Tex., Ind., La., Ala., Tenn., N.C., S.C., Pacific Islands (Hawaii), Ga., Okla., Ky., Fla., Ark.
Discussion
Digitaria violascens is a weedy species that is native to tropical regions of the Eastern Hemisphere. It is now established in the Flora region, primarily in the south-eastern United States, and in Mexico and Central America. It grows in disturbed sites.
Selected References
None.