Branching in pachycaul Senecios: The Durian Theory and the evolution of angiospermous trees and herbs

D. J. MABBERLEY*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

The giant groundsels (Senecio L. subg. Dendrosenecio [Haum. ex]Hedb.) are tropical branching pachycaul trees in a predominantly temperate herbaceous group. Other pachycaul Senecio spp. of Africa with dendrosenecio‐branching are related to tropical herbs, shrubs and lianes; the pachycaul cabbage‐trees of St Helena include the he‐cabbage tree with dendrosenecio‐branching. It is postulated that the pachycaul tree with dendrosenecio‐branching is the primitive condition for at least some alliances in the Senecioneae. The hypothesis is tested by reviewing the taxonomic distribution of the pachycaul trees with such branching in Senecioneae throughout the world and its usefulness by a consideration of the origin of herbs and trees in the Compositae.

Original languageEnglish
Pages (from-to)967-975
Number of pages9
JournalNew Phytologist
Volume73
Issue number5
DOIs
Publication statusPublished - 1974
Externally publishedYes

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