Morphological dispersal structures in relation to growth habit in the Compositae

D. Lawrence Venable, Donald A. Levin

Research output: Contribution to journalArticle

22 Scopus citations

Abstract

The relationship between gross morphological dispersal structures, growth habit, and weediness is reported for a worldwide sample of 5893 Compositae species from 18 regional floras. A significantly smaller percentage of annual species than perennial species has dispersal structures. Among species with dispersal structures, plumed types are more frequent in perennials while adhesive types are more frequent in annuals. Differences in the occurrence and nature of dispersal structures between perennial herbs, shrubs and trees were minor. Weeds are less likely to have well developed morphological dispersal structures than non-weeds. The data support the idea that dispersal in space may be more important for perennial or non-weedy plants than for annual and weedy plants.

Original languageEnglish (US)
Pages (from-to)1-16
Number of pages16
JournalPlant Systematics and Evolution
Volume143
Issue number1-2
DOIs
StatePublished - Mar 1 1983

Keywords

  • Angiosperms
  • Compositae
  • Dispersal
  • biennials
  • growth form: annuals
  • pappus
  • perennial herbs
  • shrubs and trees
  • weeds and non-weeds

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Plant Science

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