Trade in rare plants sows trouble for endangered species

Those planted outside their normal habitats can devastate native growth and can hybridize with other species, blurring their genetic lines, scientists warn.Rare plants are increasingly finding their way outside their normal habitats because of commercial sellers and citizen conservationists, two ecologists warn. Unless the movement of such plants is better regulated, it could spell trouble for endangered species as well as the environments to which they are moved.

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