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One of the patches of villi found in some forms of placenta.

Of, pertaining to, or resembling, a cotyledon.

Having a cotyledon; tufted; as, the cotyledonary placenta of the cow.

Of or pertaining to a cotyledon or cotyledons; having a seed lobe.

A plant which has no cotyledons, as the dodder and all flowerless plants.

Having no seed lobes, as the dodder; also applied to plants which have no true seeds, as ferns, mosses, etc.

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

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

A plant with only one cotyledon, or seed lobe.

Having only one cotyledon, seed lobe, or seminal leaf. Lindley.

A plant that has many, or more than two, cotyledons in the seed. -- Pol`y*cot`y*led"on*ous, a.

Having the villi of the placenta collected into definite patches, or cotyledons.

Having two coalescent cotyledons, as the live oak and the horse-chestnut.

Having united cotyledonous.

Lying against anything, as one part of a leaf against another leaf. Gray. Accumbent cotyledons have their edges placed against the caulicle. Eaton.

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.

ited by the coalescence, or sticking together, of contiguous faces, as in the case of the cotyledons of the live-oak acorn.

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

A plant with netveined leaves, and monocotyledonous embryos, belonging to the class Dictyogenæ, proposed by Lindley for the orders Dioscoreaceæ, Smilaceæ, Trilliaceæ, etc.