Difficult challenge! I liked pigale @7 (
Asplenium septentrionale is one of our favourite ferns to find in the wild), dorrien @9, jws @15/17, and ginge's efforts (of course!)
However, for the precision in clueing (once I'd worked it through), I'm going for
meursault @8
I've seen you contributing on "difficult puzzle" threads, meursault, but is this your fisrt competition entry?