View source for Holcus

{{Treatment/ID
|accepted_name=Holcus
|accepted_authority=L.
|publications=
|basionyms=
|synonyms=
|hierarchy=Poaceae;Poaceae subfam. Pooideae;Poaceae tribe Poeae;Holcus
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Poaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Poaceae subfam. Pooideae]]</div><div class="higher-taxon"><small>tribe</small>[[Poaceae tribe Poeae]]</div><div class="higher-taxon"><small>genus</small>[[Holcus]]</div></div>
|volume=Volume 24
|mention_page=
|treatment_page=page 739
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>usually perennial, rarely annual; cespitose or rhizomatous, rarely both cespitose and rhizomatous. <b>Culms</b> (8)20-200 cm, glabrous or pubescent; nodes glabrous or retrorsely glabrous or puberulent; blade flat, pubescent. <b>Inflorescences</b> terminal panicles, contracted to open. <b>Spikelets</b> laterally compressed, with 2(3) florets, lower florets bisexual, upper floret(s) staminate or sterile; rachillas curved below the lowest florets, sometimes prolonged beyond the base of the distal florets; disarticulation below the glumes. <b>Glumes</b> equaling to exceeding the florets, strongly keeled, unawned; upper lemmas awned from below the apices, awns hooked or geniculate; paleas thin, subequal to the lemmas; lodicules 2, glabrous, toothed or not; anthers 3; ovaries glabrous. <b>Caryopses</b> shorter than the lemmas, concealed at maturity, glabrous. <b>x</b> = 4, 7.</span><!--

-->{{Treatment/Body
|distribution=Conn.;N.J.;N.Y.;Del.;N.C.;Va.;D.C;Wis.;W.Va.;Pacific Islands (Hawaii);Mass.;Maine;N.H.;R.I.;Vt.;Wash.;Alta.;B.C.;N.B.;Nfld. and Labr. (Labr.);N.S.;Ont.;Que.;Sask.;N.Mex.;Tex.;La.;Tenn.;S.C.;Pa.;Okla.;Alaska;Nev.;Puerto Rico;Colo.;Md.;Calif.;Ala.;Ark.;Ill.;Ga.;Ind.;Iowa;N.Dak.;Ariz.;Idaho;Mont.;Oreg.;Ohio;Utah;Mo.;Mich.;Kans.;Miss.;Ky.
|discussion=<p><i>Holcus</i>, a genus of eight species, is native to Europe, North Africa, and the Middle East. One species, <i>H. lanatus</i>, has become widely naturalized in the Americas, Japan, and Hawaii; a second, <i>H. mollis</i>, has become a troublesome weed in some areas of the Flora region.</p>
|tables=
|references={{Treatment/Reference
|id=carroll1962a
|text=Carroll, C.P. and K. Jones. 1962. Cytotaxonomic studies in Holcus: III. A morphological study of the triploid F1 hybrid between H. lanatus L. and H. mollis L. New Phytol. 61: 72-84
}}{{Treatment/Reference
|id=jones1958a
|text=Jones, K. 1958. Cytotaxonomic studies in Holcus L.: I. The chromosome complex in Holcus mollis L. New Phytol. 57:191-210
}}{{Treatment/Reference
|id=jones1962a
|text=Jones, K. and C.P. Carroll. 1962. Cytotaxonomic studies in Holcus L.: II. Morphological relationships in H. mollis L. New Phytol. 61: 63-71
}}{{Treatment/Reference
|id=zandee1982a
|text=Zandee, M. and P.C.G. Glas. 1982 Studies in the Holcus lanatus-Holcus mollis complex (Poaceae [= Gramineae]). Proc. Kon. Ned. Akad. Wetensch., C 85:413-437.
}}
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Awns 1-2 mm long, forming a curved hook at maturity; culms densely pilose adjacent to the lower nodes; plants cespitose, not rhizomatous
|[[Holcus lanatus|Holcus lanatus]]
|-id=key-0-1
|1
|Awns 3-5 mm long, straight or geniculate at maturity; culms glabrous or sparsely pubescent adjacent to the lower nodes; plants not cespitose, rhizomatous
|[[Holcus mollis|Holcus mollis]]
|}
</div></div><!--

-->{{#Taxon:
name=Holcus
|author=Lisa A. Standley;
|authority=L.
|rank=genus
|parent rank=tribe
|synonyms=
|basionyms=
|family=Poaceae
|distribution=Conn.;N.J.;N.Y.;Del.;N.C.;Va.;D.C;Wis.;W.Va.;Pacific Islands (Hawaii);Mass.;Maine;N.H.;R.I.;Vt.;Wash.;Alta.;B.C.;N.B.;Nfld. and Labr. (Labr.);N.S.;Ont.;Que.;Sask.;N.Mex.;Tex.;La.;Tenn.;S.C.;Pa.;Okla.;Alaska;Nev.;Puerto Rico;Colo.;Md.;Calif.;Ala.;Ark.;Ill.;Ga.;Ind.;Iowa;N.Dak.;Ariz.;Idaho;Mont.;Oreg.;Ohio;Utah;Mo.;Mich.;Kans.;Miss.;Ky.
|reference=carroll1962a;jones1958a;jones1962a;zandee1982a
|publication title=
|publication year=
|special status=
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/200273ad09963decb8fc72550212de541d86569d/coarse_grained_fna_xml/V24/V24_1048.xml
|subfamily=Poaceae subfam. Pooideae
|tribe=Poaceae tribe Poeae
|genus=Holcus
}}<!--

-->[[Category:Treatment]][[Category:Poaceae tribe Poeae]]