Flint corn ('' Zea mays'' var. ''indurata''; also known as Indian corn or sometimes calico corn) is a variant of

maize Maize ( ; ''Zea mays'' subsp. ''mays'', from es, maíz after tnq, mahiz), also known as corn (North American English, North American and Australian English), is a cereal grain first domesticated by indigenous peoples of Mexico, indigenous ...

, the same species as common corn. Because each kernel has a hard outer layer to protect the soft

endosperm The endosperm is a tissue produced inside the seeds of most of the flowering plants following double fertilization. It is triploid (meaning three chromosome sets per nucleus) in most species, which may be auxin-driven. It surrounds the embryo an ...

, it is likened to being hard as

flint Flint, occasionally flintstone, is a sedimentary cryptocrystalline form of the mineral quartz, categorized as the variety of chert that occurs in chalk or marly limestone. Flint was widely used historically to make stone tools and start ...

; hence the name. The six major types of corn are dent corn, flint corn, pod corn,

popcorn Popcorn (also called popped corn, popcorns or pop-corn) is a variety of corn kernel which expands and puffs up when heated; the same names also refer to the foodstuff produced by the expansion. A popcorn kernel's strong hull contains the se ...

, flour corn, and

sweet corn Sweet corn (''Zea mays'' convar. ''saccharata'' var. ''rugosa''), also called sugar corn and pole corn, is a variety of maize grown for human consumption with a high sugar content. Sweet corn is the result of a naturally occurring recessive muta ...

History

With less soft

starch Starch or amylum is a polymeric carbohydrate consisting of numerous glucose units joined by glycosidic bonds. This polysaccharide is produced by most green plants for energy storage. Worldwide, it is the most common carbohydrate in human die ...

than dent corn ('' Zea mays indentata''), flint corn does not have the dents in each kernel from which dent corn gets its name. This is one of the three types of corn cultivated by Native Americans, both in New England and across the northern tier, including tribes such as the Pawnee on the

Great Plains The Great Plains (french: Grandes Plaines), sometimes simply "the Plains", is a broad expanse of flatland in North America. It is located west of the Mississippi River and east of the Rocky Mountains, much of it covered in prairie, steppe, a ...

Archaeologist Archaeology or archeology is the scientific study of human activity through the recovery and analysis of material culture. The archaeological record consists of artifacts, architecture, biofacts or ecofacts, sites, and cultural landsca ...

s have found evidence of such corn cultivation in what is now the United States before 1000 BC. Corn was originally domesticated in Mexico by native peoples about 9,000 years ago. They used many generations of selective breeding to transform a wild teosinte grass with small grains into the rich source of food that is modern ''Zea mays''.

Distinctive traits

Because flint corn has a very low water content, it is more resistant to freezing than other vegetables. It was the only

Vermont Vermont () is a U.S. state, state in the northeast New England region of the United States. Vermont is bordered by the states of Massachusetts to the south, New Hampshire to the east, and New York (state), New York to the west, and the Provin ...

crop to survive

New England New England is a region comprising six states in the Northeastern United States: Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, and Vermont. It is bordered by the state of New York to the west and by the Canadian provinces ...

's infamous "

Year Without a Summer The year 1816 is known as the Year Without a Summer because of severe climate abnormalities that caused average global temperatures to decrease by . Summer temperatures in Europe were the coldest on record between the years of 1766–2000. This ...

" of 1816.

Coloration

The coloration of flint corn is often different from white and yellow dent corns, many of which were bred later. Most flint corn is multi-colored. Like the Linnaeus variant of maize, any kernel may contain the yellow pigment

zeaxanthin Zeaxanthin is one of the most common carotenoids in nature, and is used in the xanthophyll cycle. Synthesized in plants and some micro-organisms, it is the pigment that gives paprika (made from bell peppers), corn, saffron, goji (wolfberries) ...

but at more varying concentrations. Regional varieties with specific coloration include Blue corn and Purple corn.

Uses

Popcorn Popcorn (also called popped corn, popcorns or pop-corn) is a variety of corn kernel which expands and puffs up when heated; the same names also refer to the foodstuff produced by the expansion. A popcorn kernel's strong hull contains the se ...

(''Zea mays everta'', "corn turned inside out") is considered a variant of this type. It has a hard, slightly translucent kernel.''New Oxford American Dictionary'' Flint corn is also the type of corn preferred for making hominy, a staple food in the Americas since

pre-Columbian In the history of the Americas, the pre-Columbian era spans from the original settlement of North and South America in the Upper Paleolithic period through European colonization, which began with Christopher Columbus's voyage of 1492. Usually, ...

times. In the United States the flint corn cultivars that have large proportions of kernels with hues outside the

yellow Yellow is the color between green and orange on the spectrum of light. It is evoked by light with a dominant wavelength of roughly 575585 nm. It is a primary color in subtractive color systems, used in painting or color printing. In th ...

range are primarily used ornamentally as part of

Thanksgiving Thanksgiving is a national holiday celebrated on various dates in the United States, Canada, Grenada, Saint Lucia, Liberia, and unofficially in countries like Brazil and Philippines. It is also observed in the Netherlander town of Leiden ...

decorations. They are often called either "ornamental corn" or "Indian corn", although each of those names has other meanings as well. These varieties can be popped and eaten as popcorn, although many people incorrectly believe that such colored varieties are not palatable or are poisonous.

References

{{Taxonbar, from=Q3303407 Maize varieties