Belonging to or characteristic of the Ericaceae family of plants, which includes heathers, blueberries, and rhododendrons.
From Ericaceae (plant family) plus -ous suffix meaning having the quality of or belonging to.
Ericaceous plants are so specific about their soil preferences that gardeners have a special term 'ericaceous compost' made with peat or peat alternatives to recreate their native acidic conditions.
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