room change with the season for different shows and special exhibits. The room is named for its curved brick-walled pathway. Plants are lined along either side of the pathway, as well as suspended from the peaked ceiling. The room was originally known as the Border Garden, which was redesigned as the present-day Serpentine Room during an 18-month period of extensive renovations starting in 1978. Fern Room The Fern Room is located in the west wing at the intersection of the Serpentine Room, the Orchid Room, and the Stove Room. The room contains many ferns, as well as cycads and other ground plants on which ferns commonly grow. The dominant species in the room are representative of the Triassic, during which ferns and cycads were common as flowering plants would not evolve until millennia later. Some species include Munch's cycad, Eastern Cape cycad, Zululand cycad, Queen sago, Staghorn fern, Australian tree fern, Tasmanian tree fern, tongue fern, bear's paw fern, and rabbit foot's fern. Orchid Room The Orchid Room is located in the north part of the west wing. The room contains many orchids. This includes the miniature orchids and the Barbara Tisherman Slipper Orchid Collection, curated in collaboration with the Orchid Society of Western Pennsylvania. Also on display is the unique Phalaenopsis Frank Sarris orchid, named for the founder of Sarris Candies, a trustee and benefactor of the Conservatory. The room originated with a donation of 800 rare orchids in 1931 from Charles D. Armstrong, owner of the Armstrong Cork Company. The orchids were then valued at $50,000. Stove Room The Stove Room is located in the south part of the west wing. From spring to fall, the room contains many butterflies and the exhibit is known as the Butterfly Forest. The plants in the room are representative of the deep tropics, and the room is maintained at a temperature of during the day and during the night. South Conservatory The South Conservatory is located south of the Palm Court. The room houses seasonal flower shows. Since 1999, during fall and winter months, the room transforms into the Garden Railroad exhibit, in which miniature trains wind among a variety of small plants. Originally called the Economic Room, the South Conservatory was built between 1896 and 1897 as a gift from Henry Phipps. It was then remodelled in the 1930s, during which time the room was partitioned to separate the Gallery