Anomalous branching patterns in some fossilFilicales: Implications in the evolution of the megaphyll and the lateral branch, habit and growth pattern

  • John Holmes
  • Published 2004 in Plant Systematics and Evolution


From middle Carboniferous coal balls leaves and stems of structurally preserved Filicalean ferns (Psalixochlaenaceae, Botryopteridaceae) are described that deviate from the normal pattern of branching. From this, interpretations are made as to the origin and relationship of axillary branching and dichotomy in this line of ferns. Their megaphylls apparently… (More)
DOI: 10.1007/BF00935999

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