Chicago Botanic Garden
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In western Minnesota, prairie restorations with the non-native Echinacea pallida have been planted near prairie remnants with the native Echinacea angustifolia. These two species are able to hybridize. Hybrid plants could threaten the native Echinacea by genetic swamping and they may not support as diverse an assemblage of insect herbivores. For instance, the native plant hosts a specialist...