Echinocaclus are ultimately true perennial shrubs,
only the form of which has been changed, but not the nature. These
shrubs have taken on the figure of melons. Tubers are
branches which sometimes rise from the fleshy, globular trunk. At
instead of leaves these plants bear thorns which arise from areolas.
The leaves are indicated by the bead placed below the bead.
geon. The stipules are null.
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