What is a plant with only one cotyledon, or seed lobe. Note: The plural, monocotyledons, is used as the name of a large class of plants, and is generally understood to be equivalent to the term endogens called?

monocotyledon — A plant with only one cotyledon, or seed lobe. Note: The plural, monocotyledons, is used as the name of a large class of plants, and is generally understood to be equivalent to the term endogens. (Webster's 1913.)

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