I am finding this book very challenging.This is not a bad thing because I like to be challenged. It is “75 Crocheted Floral Blocks” by Betty Barnden and this block is on page 84.
It does mean that once again I had to rip out a whole section and start again. In this instance it was because I misread a triple treble as a treble. It was exacerbated by the fact that there is a space on the middle of the abbreviation. It is printed as tr tr (and I read only one tr). I would expect it to be written as trtr, but perhaps that’s just me.