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==Structure and physiology==
The maize plant is often {{convert|3|m|ft|abbr=on|0}} in height,<ref>{{cite book|url=https://books.google.com/books/about/Races_of_Maize_in_Mexico.html?id=tXxQAAAAMAAJ |title=Races of Maize in Mexico|author1=Wellhausen|first1=Edwin John|year=1952}}</ref> though some natural strains can grow {{convert|12|m|ft|abbr=on|0}}.<ref>{{cite journal|url=http://www.agron.missouri.edu/mnl/86/MNL86.pdf|page=4|title=The Maximum Leaf Number of the Maize Subspecies|issn=1090-4573|volume=86|journal=The Maize Genetics Cooperation Newsletter|date=Jan 2012|first=J.R.|last=Karl}}</ref> The stem is commonly composed of 20 [[internode (botany)|internodes]] <ref>{{cite journal|url=https://www.crops.org/publications/cs/abstracts/12/6/CS0120060864?access=0&view=pdf|doi=10.2135/cropsci1972.0011183X001200060045x|title=Ecology of Exotic Races of Maize. I. Leaf Number and Tillering of 16 Races Under Four Temperatures and Two Photoperiods1|year=1972|last1=Stevenson|first1=J. C.|last2=Goodman|first2=M. M.|journal=Crop Science|volume=12|issue=6|pages=864}}</ref> of {{convert|18|cm|in|abbr=on}} length.<ref>{{cite book|url=https://books.google.com/books/about/Races_of_Maize_in_Mexico.html?id=tXxQAAAAMAAJ |title=Races of Maize in Mexico|author1=Wellhausen|first1=Edwin John|year=1952}}</ref> A leaf, which grows from each node,
Ears develop above a few of the leaves in the midsection of the plant, between the stem and leaf sheath, elongating by ~3 mm/day, to a length of {{convert|18|cm|in|abbr=on|0}} <ref>{{cite book|url=https://books.google.com/books/about/Races_of_Maize_in_Mexico.html?id=tXxQAAAAMAAJ |title=Races of Maize in Mexico|author1=Wellhausen|first1=Edwin John|year=1952}}</ref> with {{convert|60|cm|in|abbr=on|0}} being the maximum alleged in the subspecies.<ref>{{cite journal|url=http://www.agron.missouri.edu/mnl/89/pdf/03karl.pdf|title=Jala Maize is Small|journal=Maize Genetics MNL|year=2007|volume=89|pages= e3|first=J. R.|last=Karl}}</ref> They are female [[inflorescence]]s, tightly enveloped by several layers of ear leaves commonly called husks. Certain varieties of maize have been bred to produce many additional developed ears. These are the source of the "[[baby corn]]" used as a vegetable in [[Asian cuisine]].
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