View source for Zea mays ← Zea mays You do not have permission to edit this page, for the following reason: The action you have requested is limited to users in the group: Users. You can view and copy the source of this page. {{Treatment/ID |accepted_name=Zea mays |accepted_authority=L. |publications= |basionyms= |synonyms= |hierarchy=Poaceae;Poaceae subfam. Panicoideae;Poaceae tribe Andropogoneae;Zea;Zea mays |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 Andropogoneae]]</div><div class="higher-taxon"><small>genus</small>[[Zea]]</div><div class="higher-taxon"><small>species</small>[[Zea mays]]</div></div> |volume=Volume 25 |mention_page= |treatment_page=page 701 }}<!-- --><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>annual. <b>Culms</b> (0.5)1-3(6) m tall, (0.5)1-5 cm thick. <b>Blades</b> mostly 30-90 cm long, 2.5-12 cm wide. <b>Pistillate</b> inflorescences rames or spikes, usually shortly pedunculate (sometimes sessile), solitary, 4-30(40) cm long, (0.5)1-10 cm thick, with 2 or more rows of paired spikelets, hence the spikelets 4 or more ranked, rarely terminating in an unbranched staminate inflorescence. <b>Caryopses</b> concealed in fruitcases (wild taxa) or exposed (domesticated taxon); fruitcases of wild taxa distichous, triangular in side view; domesticated taxon without fruitcases, glumes reduced and shallow or collapsed and embedded in the rachis. <b>Staminate</b> panicles 10-25+ cm, with 1-60(235) branches, internodes 1.5-8.2 mm; spikelets 9-14 mm long, 2.5-5 mm wide; lower glumes rounded dorsally, flexible, translucent, papery, loosely enclosing the upper glumes, the 2 lateral veins subequal to the others, not winged. <b>2n</b> = 20.</span><!-- -->{{Treatment/Body |distribution=Ga.;Va.;Conn.;R.I.;Calif.;Idaho;Oreg.;Wash.;Ala.;Ark.;Colo.;Iowa;Ill.;Ind.;Kans.;Ky.;La.;Mass.;Md.;Maine;Mich.;Minn.;Mo.;Miss.;Mont.;N.C.;N.H.;N.J.;N.Mex.;N.Y.;Ohio;Pa.;Puerto Rico;S.C.;Tenn.;Tex.;Utah;Virgin Islands;Vt.;Wis.;W.Va.;Wyo.;Ont.;Que.;Fla.;Nebr.;Ariz.;Nev. |discussion=<p>Of the five subspecies of <i>Zea mays</i>, only the domesticated subspecies, <i>Z. mays </i>subsp.<i> mays</i>, is widely grown outside of research programs. Three wild subspecies are treated here, albeit briefly, because of their importance as genetic resources for <i>Z. mays </i>subsp.<i> mays</i>.</p> |tables= |references= }}<!-- --><div class="treatment-key"> ==Key== <div class="treatment-key-group"> {| class="wikitable fna-keytable" |-id=key-0-1 |1 |Pistillate inflorescences cylindrical spikes, 2-5(10) cm thick, with 8-24+ rows of spikelets pairs, each inflorescence tightly and permanently enclosed by several leaf sheaths and a large prophyll, not disarticulating at maturity; caryopses 60-1000+, not concealed by the glumes; staminate panicle branches not disarticulating below the sessile spikelets, lacking abscission layers; central axis of the staminate panicles polystichous, much thicker than the lateral branches; obligate domesticate |[[Zea mays subsp. mays|Zea mays subsp. mays]] |-id=key-0-1 |1 |Pistillate inflorescences cylindrical, distichous rames, less than 1 cm thick, with 2 rows of spikelet pairs, each rame usually enclosed by a single leaf sheath and a prophyll, disarticulating at maturity into fruitcases; caryopses 4-15, each one concealed within a fruitcase; staminate panicles composed of rames that disarticulate below the sessile spikelets and have evident abscission layers; central axis of the staminate panicles similar in width to the rames; in the Flora region, wild taxa are known only from research plantings. |[[#key-0-2| > 2]] |-id=key-0-2 |2 |Staminate spikelets (6.6)7.5-10.5 mm long; fruitcases 6-10 mm long, 4-6 mm wide; staminate panicles with 1-35+ ascending to divergent, rather stiff branches |[[Zea mays subsp. mexicana|Zea mays subsp. mexicana]] |-id=key-0-2 |2 |Staminate spikelets 4.6-7.2(7.9) mm long; fruitcases 5-8 mm long, 3-5 mm wide; staminate panicles usually with 10-100(235) divergent to nodding branches. |[[#key-0-3| > 3]] |-id=key-0-3 |3 |Leaves pubescent; staminate panicles with (2)10-100(235) branches |[[Zea mays subsp. parviglumis|Zea mays subsp. parviglumis]] |-id=key-0-3 |3 |Leaves glabrous or almost so; staminate panicles usually with fewer than 40 branches |[[Zea mays subsp. huehuetenangensis|Zea mays subsp. huehuetenangensis]] |} </div></div><!-- -->{{#Taxon: name=Zea mays |authority=L. |rank=species |parent rank=genus |synonyms= |basionyms= |family=Poaceae |distribution=Ga.;Va.;Conn.;R.I.;Calif.;Idaho;Oreg.;Wash.;Ala.;Ark.;Colo.;Iowa;Ill.;Ind.;Kans.;Ky.;La.;Mass.;Md.;Maine;Mich.;Minn.;Mo.;Miss.;Mont.;N.C.;N.H.;N.J.;N.Mex.;N.Y.;Ohio;Pa.;Puerto Rico;S.C.;Tenn.;Tex.;Utah;Virgin Islands;Vt.;Wis.;W.Va.;Wyo.;Ont.;Que.;Fla.;Nebr.;Ariz.;Nev. |reference=None |publication title= |publication year= |special status= |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V25/V25_1664.xml |subfamily=Poaceae subfam. Panicoideae |tribe=Poaceae tribe Andropogoneae |genus=Zea |species=Zea mays }}<!-- -->[[Category:Treatment]][[Category:Zea]] Templates used on this page: Template:Poaceae (view source) Template:Treatment/AuthorLink (view source) Template:Treatment/Body (view source) Template:Treatment/Body/Maps (view source) Template:Treatment/ID (view source) Return to Zea mays.