He starts looking with her, searching through the long grass, and a few moments later they've found a mate to the sprig he's got.

"Perfect. Thank you." A moment later he's giving her a slightly wry look. "I should probably focus a little more on quantity rather than hunting down matches of things, but I'd like to be thorough and I've never had so little to go on before."

One flower somehow cured a mabari of the Blight if the story is right. If it was really the Blight. There's a dozen more 'ifs' in there as well, but he'll do what he needs to to find a cure.