genus
Rockspirea
Petrophytum
Field notes
Petrophytum (orth. var. Petrophyton) is a small genus of plants in the rose family known as the rock spiraeas or rockmats. These are low mat-forming shrubs which send up erect stems bearing spike inflorescences of flowers. The brushy flowers are white and have many stamens and hairy, thready pistils. Rockmats are native to western North America.
Species:
Petrophytum caespitosum — mat rock spiraea
Petrophytum cinerascens — halfshrub rockmat, Chelan rockmat
Petrophytum hendersonii — Olympic Mountain rockmat
Read more on WikipediaChildren
Range
Greener is more native, amber more introduced; paler is less certain. How this was decided
Key traits
- Layer
- Shrubs
From USDA PLANTS.
Top native rockspirea All
Native to the US, ranked by caterpillars, then bees and other hosts, food, flowers and shelter.
