Gymnospermae (naked seeds, חשופי הזרע), Class: Gnetopsida, Order: Ephedrales, Family: Ephedraceae, שרביטניים

Family Ephedraceae,
Mormon-Tea Family, משפחת השרביטניים

Desert shrubs with jointed branches; Leaves opposite or in whorls of 3, scalelike; Cones terminal or axillary, ovoid or ellipsoid; Pollen cones solitary or clustered at nodes, 2-8 anthers; Seed cones opposite or in whorls of 3 or 4 at nodes, each cone composed of overlapping bracts, covering the two maturing seeds.

Genus Ephedra, שרביטן: