Volunteer Park Conservatory cycads, and orchids, visitors will find banana ("Musa"), Bird of Paradise ("Strelitzia"), "Anthurium" and ginger (Zingiberaceae) in this house. The conservatory’s orchid collection, which began as a gift from Mrs. Anna H. Clise in 1921, is also found in the Palm House. Orchids are a large and diverse flowering plant family composed of more than 20,000 species. The conservatory’s collection includes representatives of the largest genera – "Bulbophyllum", "Epidendrum", and "Dendrobium" – as well as commonly cultivated genera such as "Cattleya" and "Phalaenopsis". Transporting endangered orchids is prohibited by the Convention of International Trade of Endangered Species (CITES) and many
Cattleya rex La Paz in Bolivia. It occurs in montane forests and low montane seasonally dry forests at 800–2500 m, growing on tree branches. In its native habitat, flowering occurs between December and March. "Cattleya rex" has been assigned an endangered conservation status in 1997 by the IUCN. Previously believed to be a Peruvian endemic, in 2013 a new locality was reported in Bolivia, thus increasing the area of extension for the species. "C. rex" requires a temperate climate (in winter, artificial heating set at 16 °C at night and 18 °C during the day is recommended) and good ventilation (a dark