Family: Rosaceae
[Pyrus occidentalis , more..., Pyrus sambucifolia var. pumila (Raf.) Sarg., Sorbus occidentalis (S. Watson) Greene, Sorbus pumilus Raf., Sorbus sambucifolia var. grayi Wenz., Sorbus sambucifolia var. pumila (Raf.) Koehne, Sorbus sitchensis subsp. grayi (Wenzig) Calder & Roy L. Taylor]
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