 The pannes support many unusual plants, such as "Carex aurea", "Cladium mariscoides", "Scleria verticillata", "Parnassia glauca" and "Physostegia virginiana".The colourful pink flowers of the "Physostegia" are a good indicators of panne habitat during the summer.Because of their scarcity and scientific importance, these wetlands have been used to develop and test general models for factors affecting diversity in plant communities.