AskDefine | Define corymb

Dictionary Definition

corymb n : flat-topped or convex inflorescence in which the individual flower stalks grow upward from various points on the main stem to approximately the same height; outer flowers open first

User Contributed Dictionary

English

Noun

  1. a cluster of flowers with a flat or convex top

Translations

Extensive Definition

A panicle is a compound raceme, a loose, much-branched indeterminate inflorescence with pedicellate flowers (and fruit) attached along the secondary branches (in other words, a branched cluster of flowers in which the branches are racemes).
This type of inflorescence is largely characteristic of grasses like oat and crabgrass, as well as other plants such as pistachio and mamoncillo. Botanists use the term paniculate in two ways: "having a true panicle inflorescence" as well as "having an inflorescence with the form but not necessarily the structure of a panicle".
A corymb is similar to a panicle with the same branching structure, but with the lower flowers having longer stems, thus giving a flattish top superficially resembling an umbel. Many species in the Maloideae, such as hawthorns and rowans, produce their flowers in corymbs.
A thyrse is a compact panicle having an obscured main axis and cymose subaxes, making its paniculate nature hard to discern. Many Ceanothus species have thyrsiform inflorescences, notably Ceanothus thyrsiflorus.

Note

corymb in Catalan: Panícula
corymb in Czech: Lata
corymb in German: Rispe
corymb in Spanish: Panícula
corymb in Esperanto: Paniklo
corymb in French: Panicule
corymb in Lithuanian: Šluotelė
corymb in Dutch: Pluim (bloeiwijze)
corymb in Polish: Wiecha
corymb in Portuguese: Panícula
corymb in Russian: Метёлка
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