<unk> is a genus of gymnosperm shrubs. The various species of<unk> are widespread in many arid regions of the world, ranging across southwestern North America, southern Europe, northern Africa, southwest and central Asia, northern China and western South America. It is the only extant genus in its family,<unk> eae, and order,<unk> es, and one of the three living members of the division Gnetophyta alongside Gnetum and Welwitschia. In temperate climates, most<unk> species grow on shores or in sandy soils with direct sun exposure. Common names in English include joint-pine, jointfir, Mormon-tea or Brigham tea. The Chinese name for<unk> species is mahuang ().<unk> is the origin of the name of the stimulant<unk> ne, which the plants contain in significant concentration.<unk> fragilis pollen cones<unk> distachya: ripe female cones with seeds<unk> ciliata seed
Ephedra 
Milk Teeth
Leech
Pannus
Floater
Whitlow
Mersa
Datura