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A plant whose seeds divide into two seed lobes, or cotyledons, in germinating.

Having two cotyledons or seed lobes; as, a dicotyledonous plant.

Having the petals and stamens adnate to the calyx; -- applied to a subclass of dicotyledonous plants in the system of the French botanist Candolle.

A large family of dicotyledonous plants, having their flowers arranged in dense heads of many small florets and their anthers united in a tube. The daisy, dandelion, and asters, are examples.

ially developed condition, or lacking certain parts. Some families of plants are degraded dicotyledons. Dana.

A name given by Lestiboudois to dicotyledons; -- so called because the plumule is naked.

Having the cotyledons of a dicotyledonous embryo confluent, and forming a large mass compared with the rest of the body. Henslow.

gy substance in the center of the stems of many plants and trees, especially those of the dicotyledonous or exogenous classes. It consists of cellular tissue.

Bearing the stamens directly on the receptacle; -- said of a subclass of polypetalous dicotyledonous plants in the system of De Candolle.

Plants having distinct flowers and true seeds. { 1. Dicotyledons (called also Exogens). -- Seeds with two or more cotyledons. Stems with the pith, woody fiber, and bark concentrically arranged. Divided into two subclasses: Angiosperms, having the woody fiber interspersed with dotted or annular ducts, and the seed cont…