ITS-2 sequence from E. torreyanum (= E. hyssopifolium var. laciniatum) showing “echo” pattern of peaks that begins (blue line) where its putative progenitors, E. hyssopifolium (middle) and E. serotinum (bottom) differ for a bp substitution (T/C; red dots) and then a 1 bp indel (red arrow shows extra base in E. serotinum).  

E. torreyanum

E. hyssopifolium

E. serotinum