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This shows a typical tap root, (Keeler, 1915).

Tap Root

This shows a typical tap root, (Keeler, 1915).

A taproot.

Taproot

A taproot.

"When the root sinks perpendicularly into the earth, and tapers regularly from the base to the apex with very few fibrous radicles. This variety contains some of the most important garden vegetables, and it is seldom found of natural growth, being almost uniformly produced by cultivation."—Darby, 1855

Tap Root

"When the root sinks perpendicularly into the earth, and tapers regularly from the base to the apex…