View source for Digitaria ischaemum

{{Treatment/ID
|accepted_name=Digitaria ischaemum
|accepted_authority=(Schreb.) Muhl.
|publications=
|common_names=Smooth crabgrass;Digitaire astringente
|special_status={{Treatment/ID/Special_status
|code=I
|label=Introduced
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Syntherisma linearis
|authority=
|rank=species
}} {{Treatment/ID/Synonym
|name=Syntherisma ischaemum
|authority=
|rank=species
}}
|hierarchy=Poaceae;Poaceae subfam. Panicoideae;Poaceae tribe Paniceae;Digitaria;Digitaria ischaemum
|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 ischaemum]]</div></div>
|volume=Volume 25
|mention_page=
|treatment_page=page 372
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>annual or of indefinite duration. <b>Culms</b> 20-55(70) cm, decumbent, branching and rooting at the lower nodes; nodes 3-4. <b>Sheaths</b> glabrous or sparsely pubescent; ligules 0.6-2.5 mm; blades 1.5-9 cm long, 3-5 mm wide, glabrous, with a few papillose-based hairs basally. <b>Panicles</b> terminal and axillary; terminal panicles with 2-7 spikelike primary branches, subdigitate or on 0.5-2 cm rachises; primary branches 6-15.5 cm, axes wing-margined, wings at least 1/2 as wide as the midribs, bearing spikelets in groups of 3, lower portions of the longer pedicels adnate to the axes; secondary branches rarely present; axillary inflorescences always present in some of the lower sheaths, entirely or partially concealed. <b>Spikelets</b> 1.7-2.3 mm, homomorphic, narrowly elliptic. <b>Lower</b> glumes absent or a veinless, membranous rim; upper glumes 1.3-2.3 mm, from 3/4 as long as to equaling the upper lemmas, appressed-pubescent; lower lemmas 1.7-2.3 mm, 7-veined, veins unequally spaced, smooth, pubescent; upper lemmas dark brown at maturity; anthers 0.4-0.6 mm. <b>2n</b> = 36.</span><!--

-->{{Treatment/Body
|distribution=Idaho;Mont.;Wash.;Conn.;N.J.;N.Y.;Va.;Del.;D.C.;Wis.;W.Va.;Md.;Alta.;B.C.;Man.;N.B.;N.S.;Ont.;P.E.I.;Que.;Sask.;Fla.;Wyo.;N.H.;N.Mex.;Tex.;La.;Tenn.;N.C.;S.C.;Pa.;Nev.;Mass.;Maine;R.I.;Vt.;Puerto Rico;Colo.;Virgin Islands;Calif.;Ala.;Kans.;N.Dak.;Nebr.;Okla.;S.Dak.;Ark.;Ill.;Ga.;Ind.;Iowa;Ariz.;Ohio;Utah;Mo.;Minn.;Mich.;Miss.;Ky.;Oreg.
|discussion=<p><i>Digitaria ischaemum</i> is a Eurasian weed that is now common in lawns, gardens, fields, and waste ground in warm-temperate regions throughout the world, including much of the Flora region. Larger plants with 5-7 inflorescence branches 8-15 cm long have been called var. mississippiensis (Gatt.) Fernald, but they intergrade with more typical plants, and so do not merit taxonomic recognition.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Digitaria ischaemum
|authority=(Schreb.) Muhl.
|rank=species
|parent rank=genus
|synonyms=Syntherisma linearis;Syntherisma ischaemum
|basionyms=
|family=Poaceae
|illustrator=Linda A. Vorobik;Hana Pazdírková
|illustration copyright=Utah State University
|distribution=Idaho;Mont.;Wash.;Conn.;N.J.;N.Y.;Va.;Del.;D.C.;Wis.;W.Va.;Md.;Alta.;B.C.;Man.;N.B.;N.S.;Ont.;P.E.I.;Que.;Sask.;Fla.;Wyo.;N.H.;N.Mex.;Tex.;La.;Tenn.;N.C.;S.C.;Pa.;Nev.;Mass.;Maine;R.I.;Vt.;Puerto Rico;Colo.;Virgin Islands;Calif.;Ala.;Kans.;N.Dak.;Nebr.;Okla.;S.Dak.;Ark.;Ill.;Ga.;Ind.;Iowa;Ariz.;Ohio;Utah;Mo.;Minn.;Mich.;Miss.;Ky.;Oreg.
|reference=None
|publication title=
|publication year=
|special status=Introduced
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/200273ad09963decb8fc72550212de541d86569d/coarse_grained_fna_xml/V25/V25_1071.xml
|subfamily=Poaceae subfam. Panicoideae
|tribe=Poaceae tribe Paniceae
|genus=Digitaria
|species=Digitaria ischaemum
}}<!--

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