Indeed, when I was heading out for the hike, I was debating whether or not to load my camera with my last remaining roll of color film. In the end I decided not to, since that last remaining roll was a Harman Phoenix, which I frankly don't like (see my posts in the "Can we talk about film" thread). I'm glad I chose Ilford XP2 since, as you've seen, it can really capture a lot of fine detail, with very low grain to boot. I have a lot of b&w flower photos actually, and I've grown to appreciate the lack of color, since it sort of forces you to notice other details such as contrast, texture, and the interplay of light and shadow, especially when using a natively b&w medium like film, rather than a b&w conversion of a color digital image. Unfortunately I really have no knowledge of nature, so I can't tell what that particular flower was—I actually had to google to be certain that it was a butterfly landing on the flower, otherwise I could have sworn it was an unladen swallow (don't know if it's African or European) carrying two coconut shells!