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 Zea mays, only the domesticated subspecies, Z. mays subsp. mays, is widely grown outside of research programs. Three wild subspecies are treated here, albeit briefly, because of their importance as genetic resources for Z. mays subsp. mays.</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 |author= |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://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/314eb390f968962f596ae85f506b4b3db8683b1b/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.