How to Plant and Grow Asafetida Gardener's Path The Ephedra Family, Ephedraceae, has only one genus: Ephedra. There are about 40 species world wide, about a dozen or so species in western U.S. The leaves are reduced to tiny scales so Most U.S. utility scale geothermal power plants built since 2000 are binary cycle plants U.S. Energy Information Administration (EIA) Our Rose & Clematis Cage, finished in our beautiful acidwash patina and paired with the combination planter, is looking absolutely stunning alongside the gorgeous clematis from Walled Garden Nursery