dicotyledon

1. any flowering plant of the class Dicotyledonae, normally having two embryonic seed leaves and leaves with netlike veins. The group includes many herbaceous plants and most families of trees and shrubs

2. primitive dicotyledon. any living relative of early angiosperms that branched off before the evolution of monocotyledons and eudicotyledons. The group comprises about 5 per cent of the world's plants

Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

dicotyledon

[‚dī‚käd·əl′ēd·ən]

(botany)

Any plant of the class Magnoliopsida, all having two cotyledons.

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References in periodicals archive

Dicotyledones (Compositae)--OPTIMA, Palermo, Geneve & Berlin.

Pilosella argyrogaliciana, P. argyrolegionensis and P. megargyrocoma (Asteraceae): three new species from the Cantabrian Mountains (N. Spain)/Pilosella argyrogaliciana, P. argyrolegionensis y P. megargyrocoma (Asteraceae): tres nuevas especies de la Cordillera Cantdbrica (N Espana)

Le bromure de potassium (KBr), un substitut du nitrate, et la metribuzine, couramment utilisee pour lutter contre les dicotyledones, ont ete appliques en automne 1996 et au printemps 1997 sur un loam limoneux qui avait subi un travail du sol classique (TC), un travail minimum (un seul passage du cultivateur C disque [TM]) et aucun travail (AT) depuis 1983.

Dissipation of bromide and metribuzin affected by tillage and crop residue management in Subarctic Alaska

Chrysolina, the sister genus of Oreina, comprises a vast array of subgenera specialized on different plant families of Dicotyledones. Although the majority of species are found on Lamiaceae and Scrophulariaceae, both Apiaceae and Asteraceae (among other plant families) are also used by some subgenera (Bourdonne and Doguet 1991).

Host-plant switches and the evolution of chemical defense and life history in the leaf beetle genus Oreina

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