15a. Dagger-shaped marks in the foreign flower. For this I have *o*e*i*. i assumed it would be an anagram of 'foreign' but that doesn't work (at least not for me) and, the only thing I can come up with, which are both flowera are; godetia or lobelia. but I'm at a loss to understand the wordplay for either. Any help apreciated please. B.