Native Plants

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Anderson, Wynn

Petrophytum caespitosum var. caespitosum

Petrophytum caespitosum (Nutt.) Rydb. var. caespitosum

Mat Rockspirea

Rosaceae (Rose family)

Synonym(s): Eriogynia caespitosa, Petrophytum caespitosum ssp. caespitosum, Spiraea caespitosa

USDA Symbol: PECAC2

USDA Native Status: L48 (N)

From the Image Gallery

1 photo(s) available in the Image Gallery

Plant Characteristics

Duration: Perennial
Habit: Subshrub
Inflorescence: Terminal
Fruit Type: Aggregate , Follicle
Size Notes: Up to about 3 inches tall.
Fruit: Aggregated follicles.

Bloom Information

Bloom Color: White
Bloom Time: May , Jun , Jul , Aug , Sep , Oct

Distribution

USA: AZ , CA , CO , ID , MT , NM , NV , OR , SD , TX , UT , WY

Web Reference

Webref 30 - Calflora (2018) Calflora
Webref 3 - Flora of North America (2014) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
Webref 23 - Southwest Environmental Information Network (2009) SEINet - Arizona Chapter

Additional resources

USDA: Find Petrophytum caespitosum var. caespitosum in USDA Plants
FNA: Find Petrophytum caespitosum var. caespitosum in the Flora of North America (if available)
Google: Search Google for Petrophytum caespitosum var. caespitosum

Metadata

Record Modified: 2023-05-10
Research By: CBR

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