The Valley in which the Provinces of Pocalo sit is ringed by a range of high red mountains. The poor nutrient content of the red soil, coupled with the erosion issues on the cloud spider web structure (and low sunlight in many areas), make it difficult for many species of plants to take root.
As a result, several of the more successful plants in the region are ones that had evolved to draw their sustenance from the delicious flesh of insects, and other things (cough, ahem) larger than insects. Birds, perhaps. A rat or two. Maybe, I don’t know, a human sometimes? Who’s counting, really?
Sticky tendrils, grasping appendages, alluring lights, digestive juices: the flora of the Valley have a wide range of adaptations for ensnaring and devouring hapless fauna.
Several of the plants, like the melaine mushroom, have useful medicinal applications, provided one can harvest them without being eaten.