Exogen

Ex´o`gen

n.

1.

(Bot.) A plant belonging to one of the greater part of the vegetable kingdom, and which the plants are characterized by having c wood bark, and pith, the wood forming a layer between the other two, and increasing, if at all, by the animal addition of a new layer to the outside next to the bark. The leaves are commonly netted-veined, and the number of cotyledons is two, or, very rarely, several in a whorl. Cf. Endogen.

Thesaurus

Noun

1.

exogen - flowering plant with two cotyledons; the stem grows by deposit on its outside dicot, dicotyledon, magnoliopsid angiosperm, flowering plant - plants having seeds in a closed ovary class Dicotyledonae, class Dicotyledones, class Magnoliopsida, Dicotyledonae, Dicotyledones, Magnoliopsida - comprising seed plants that produce an embryo with paired cotyledons and net-veined leaves; divided into six (not always well distinguished) subclasses (or superorders): Magnoliidae and Hamamelidae (considered primitive); Caryophyllidae (an early and distinctive offshoot); and three more or less advanced groups: Dilleniidae; Rosidae; Asteridae jiqui, Malpighia obovata - Cuban timber tree with hard wood very resistant to moisture acerola, barbados cherry, Malpighia glabra, Surinam cherry, West Indian cherry - tropical American shrub bearing edible acid red fruit resembling cherries cyrilla family, Cyrilliaceae, family Cyrilliaceae, titi family - shrubs and trees with leathery leaves and small white flowers in racemes: genera Cyrilla and Cliftonia