View source for Zea mays

{{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]]