Petrophyton

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Petrophyton
Petrophyton caespitosum
Petrophyton caespitosum
Scientific classification
Kingdom: Plantae
Division: Magnoliophyta
Class: Magnoliopsida
Order: Rosales
Family: Rosaceae
Genus: Petrophyton
Species

4 - see text

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:

  • Petrophyton acuminatum - big arroyo rockmat
  • Petrophyton caespitosum - mat rock spiraea
  • Petrophyton cinerascens - halfshrub rockmat, Chelan rockmat
  • Petrophyton hendersonii - Olympic Mountain rockmat

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