perennial

Petrophytum cinerascens (Piper) Rydb.

Petrophytum cinerascens (Piper) Rydb.. Petrophytum cinerascens is a rare species of flowering plant in the rose family known by the common names halfshrub rockmat and Chelan rockmat. It is endemic to the state of Washington in the United States, where it occurs in just a few locations along the Columbia River in Chelan and Douglas Counties.

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Native range

Native range not recorded for this plant. Often a non-native cultivar or naturalized garden plant.

Related plants

Sources

USDA PLANTS