For those that are looking for current CMoW info the quests are all shut down and the only way to currently get this is via mass killing of bandit camps to get coin couriers to spawn. Once they do you have to get super lucky that they drop the CMoW. I've been mass killing for hours here at 93 and
I wanted to emphasize that the plant is found as an outgrowth of a fern. (The pictured plant is incorrect.) When present at the base of the fern is a white half ball. It seems that there may be just one or two up in the zone at one time. It can be difficult to pick this up; be persistent.