Another.

Staying within the veins is classic signs of nems, but there appears to be some scorching or frost damage around the brown parts, which could indicate that the cell tissue was previously damaged and some sort of rust has set in, or other opportunistic fungus/bacteria.

I remember from earlier in the year that mother nature was cruel and kept freezing you after hostas were emerged, so it very well could just be tissue damage.

BUT, I AM NO EXPERT, and I hope others weigh in with more experience.

Best of luck,

Ludi

Too early for nems. Looks like cold or heat damage.

Gesila