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sweet pepperbush, pepper bush, summer sweet, white alder, Clethra alnifolia | shrub of eastern and southern coastal United States having beautiful racemes of spice-scented white flowers ❲Clethra alnifolia❳ | |
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white alder, mountain alder, Alnus rhombifolia | tree of western United States ❲Alnus rhombifolia❳ |