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iNat·72289GenusPlantae5,243 field observations
  1. Plants
  2. ›Vascular Plants
  3. ›flowering plants
  4. ›Dicots
  5. ›Roses, Elms, Figs, and Allies
  6. ›rose family
  7. ›Amygdaloideae
  8. ›Spiraeeae
Petrophytum
Plate 1 of 8. (c) harrii, some rights reserved (CC BY), uploaded by harrii · via iNaturalist

Petrophytum

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.

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3 branches of this genus, most-observed first

mat rock spiraea

speciesPetrophytum caespitosum

Olympic Rockmat

speciesPetrophytum hendersonii

Chelan Rockmat

speciesPetrophytum cinerascens

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Where it lives

Recorded sightings

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geo-referenced records in GBIF, from museums, herbaria and field observers.

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Every page naming Petrophytum in the Biodiversity Heritage Library →

This page is assembled live from iNaturalist, GBIF, Wikipedia, the Source Library and the Internet Archive. It is not yet part of the hand-edited codex. iNaturalist taxon 72289.