Cypripedium calceolus
The flora of the park is rich and interesting. A comprehensive list of plants would extend to more than 2,000 species without including lichens, algae or fungi. Flowers present in the area include Marsican Iris ("Iris marsica"), gentian, primrose, cyclamen, violets and the lily. The most well-known flower of the park is the rare lady's slipper ("Cypripedium calceolus"), a yellow and black orchid.