View source for Digitaria violascens

{{Treatment/ID
|accepted_name=Digitaria violascens
|accepted_authority=Link
|publications=
|special_status={{Treatment/ID/Special_status
|code=I
|label=Introduced
}}
|basionyms=
|synonyms=
|hierarchy=Poaceae;Poaceae subfam. Panicoideae;Poaceae tribe Paniceae;Digitaria;Digitaria violascens
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Poaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Poaceae subfam. Panicoideae]]</div><div class="higher-taxon"><small>tribe</small>[[Poaceae tribe Paniceae]]</div><div class="higher-taxon"><small>genus</small>[[Digitaria]]</div><div class="higher-taxon"><small>species</small>[[Digitaria violascens]]</div></div>
|volume=Volume 25
|mention_page=
|treatment_page=page 372
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="whole_organism duration;whole_organism duration;whole_organism growth form"><b>Plants </b>annual or of indefinite duration.</span> <span class="statement" id="st-d0_s1" data-properties="culm some measurement;culm orientation;culm architecture"><b>Culms </b>15-60 cm, erect, usually not branching from the upper nodes;</span> <span class="statement" id="st-d0_s2" data-properties="node quantity">nodes 3-4.</span> <span class="statement" id="st-d0_s3" data-properties="sheath pubescence;sheath pubescence"><b>Sheaths </b>glabrous or sparsely pubescent;</span> <span class="statement" id="st-d0_s4" data-properties="ligule some measurement">ligules 0.6-2.5 mm;</span> <span class="statement" id="st-d0_s5" data-properties="blade length;blade width;blade pubescence;hair architecture">blades 1.5-9 cm long, 3-5 mm wide, glabrous, with papillose-based hairs basally.</span> <span class="statement" id="st-d0_s6" data-properties="primary branch quantity;primary branch shape;verticil quantity"><b>Panicles </b>with 2-7 spikelike primary branches in 1-2 verticils;</span> <span class="statement" id="st-d0_s7" data-properties="primary branch some measurement;primary branch orientation;axis width;axis architecture;wing quantity;group quantity">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);</span> <span class="statement" id="st-d0_s8" data-properties="secondary branch presence">secondary branches rarely present;</span> <span class="statement" id="st-d0_s9" data-properties="axillary inflorescence presence">axillary inflorescences absent.</span> <span class="statement" id="st-d0_s10" data-properties="spikelet some measurement;spikelet architecture;spikelet arrangement or shape"><b>Spikelets </b>1.2-1.7 mm, homomorphic, narrowly elliptic.</span> <span class="statement" id="st-d0_s11" data-properties="lower glume presence;lower glume architecture;rim texture"><b>Lower </b>glumes absent or a veinless, membranous rim;</span> <span class="statement" id="st-d0_s12" data-properties="upper glume some measurement;upper glume quantity;upper glume architecture;upper glume pubescence;upper lemma variability;hair relief">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;</span> <span class="statement" id="st-d0_s13" data-properties="lower lemma some measurement;lower lemma architecture;vein arrangement;between lateral-vein and margins region pubescence;inner lateral-vein quantity;inner margin quantity;hair some measurement;hair relief;hair relief;hair relief;hair quantity">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;</span> <span class="statement" id="st-d0_s14" data-properties="upper lemma coloration;upper lemma coloration">upper lemmas light-brown when immature, dark-brown at maturity;</span> <span class="statement" id="st-d0_s15" data-properties="anther some measurement;2n chromosome quantity">anthers 0.4-0.6 mm. <b>2n</b> = 36.</span><!--

-->{{Treatment/Body
|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>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Digitaria violascens
|authority=Link
|rank=species
|parent rank=genus
|synonyms=
|basionyms=
|family=Poaceae
|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.
|reference=None
|publication title=
|publication year=
|special status=Introduced
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V25/V25_1072.xml
|subfamily=Poaceae subfam. Panicoideae
|tribe=Poaceae tribe Paniceae
|genus=Digitaria
|species=Digitaria violascens
|2n chromosome quantity=36
|anther some measurement=0.4mm;0.6mm
|axillary inflorescence presence=absent
|axis architecture=wing-margined
|axis width=0.6mm;1mm
|between lateral-vein and margins region pubescence=appressed-pubescent
|blade length=1.5cm;9cm
|blade pubescence=glabrous
|blade width=3mm;5mm
|culm architecture=branching
|culm orientation=erect
|culm some measurement=15cm;60cm
|group quantity=5
|hair architecture=papillose-based
|hair quantity=abundant
|hair relief=verrucose;verrucose;smooth;verrucose
|hair some measurement=0.3mm;0.5mm
|inner lateral-vein quantity=2
|inner margin quantity=2
|ligule some measurement=0.6mm;2.5mm
|lower glume architecture=veinless
|lower glume presence=absent
|lower lemma architecture=5-7-veined
|lower lemma some measurement=1.2mm;1.7mm
|node quantity=3;4
|primary branch orientation=erect
|primary branch quantity=2;7
|primary branch shape=spikelike
|primary branch some measurement=3cm;12cm
|rim texture=membranous
|secondary branch presence=absent
|sheath pubescence=pubescent;glabrous
|spikelet architecture=homomorphic
|spikelet arrangement or shape=elliptic
|spikelet some measurement=1.2mm;1.7mm
|upper glume architecture=3-veined
|upper glume pubescence=appressed-pubescent
|upper glume quantity=1/2
|upper glume some measurement=1.2mm;1.4mm
|upper lemma coloration=dark-brown;light-brown
|upper lemma variability=equaling
|vein arrangement=spaced
|verticil quantity=1;2
|whole_organism duration=of indefinite;annual
|whole_organism growth form=plant
|wing quantity=1/2
}}<!--

-->[[Category:Treatment]][[Category:Digitaria]]