Ephedra viridis


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Ephedra viridis

plants in the family Ephedraceae; the source of ephedra which is used in Chinese and Western herbal medicine, especially for its action on the respiratory system. Called also Ma Huang in Chinese herbal medicine.
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The cold desert vegetation at the study site was dominated by perennial shrubs including Coleogyne ramosissima, Ephedra viridis, Artemisia filifolia, Vanclevea stylosa, and Quercus havardii.
Species Growth form Leaf longevity Flowering Coleogyne ramosissima shrub drought deciduous April-August Artemisia filifolia shrub winter deciduous August-October Quercus havardii shrub winter deciduous April-June Ephedra viridis shrub evergreen [+] July-August Vanclevea stylosa shrub winter deciduous July-August Cryptantha flava perennial forb evergreen May-July (+.