Semimorula liquescens is a modified echinostelid myxomycete (Mycetozoa)

Mycologia. 2009 Nov-Dec;101(6):773-6. doi: 10.3852/08-075.


The enigmatic Semimorula liquescens E.F. Haskins, McGuin. & C.S. Berry has been isolated repeatedly from dried infructescences of Lythrum salicaria collected from Seattle and Kirkland, Washington. Detailed developmental, morphological and ultrastructural studies suggested that it represents a taxon within Mycetozoa, closely allied with Myxogastria (Myxomycetes) but with unique characteristics. Phylogeny based on two genes places it with confidence in family Echinosteliidae. This species differs from a typical Echinostelium in the way spores germinate and in the lack of a stalked sporophore, the latter being a secondary loss. Semimorula liquescens therefore might be a useful negative model to search for genes inducing stalk formation during sporulation.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • DNA, Protozoan / analysis
  • DNA, Protozoan / genetics
  • Genes, Protozoan
  • Genes, rRNA
  • Molecular Sequence Data
  • Myxomycetes / classification*
  • Myxomycetes / genetics
  • Peptide Elongation Factor 1 / analysis
  • Peptide Elongation Factor 1 / genetics
  • Phylogeny
  • Sequence Analysis, DNA
  • Species Specificity
  • Washington


  • DNA, Protozoan
  • Peptide Elongation Factor 1

Associated data

  • GENBANK/EU544543
  • GENBANK/EU544544