Modern sphenophytes www.ucmp.berkeley.edu/plants/sphenophyta/sphenophyta.html Introduction to the Sphenophyta «Introduction to the Sphenophyta» horestails or scouring rushes Introduction to the Sphenopyta "Introduction to the Sphenophyta" «Introduction to the Sphenophyta» The life history and fossil record of horsetails Introduction to the Sphenophyta horsetails horsetails "Introduction to the Sphenophyta" "Introduction to the Sphenophyta" Introduction to the Sphenophyta Horsetails "Introduction to the Sphenophyta" Introduction to the Sphenophyta horsetails Introduction to the Sphenopyta www.ucmp.berkeley.edu/plants/sphenophyta/sphenophyta.html "Introduction to the Sphenophyta" Introduction to the Sphenopyta Introduction to the Sphenophyta horsetails June 27, 1996 Introduction to the Sphenophyta «Introduction to the Sphenophyta» "Introduction to the Sphenophyta"