Ephedra- Morphology and Anatomy

#gymnosperms #ephedra The Old World accounts for about 18 species whereas roughly 22 species are confined to the New World. The plants exhibit extreme xerophytic characters. On a casual look, one may mistake a plant of Ephedra for Equisetum. There are two types of branches - indeterminate and determinate. The indeterminate branches at each node have leaves in whorls of threes and sometimes in fours. The determinate branches are borne in the axil of some of the leaves of indeterminate branches....