Page author: David Giblin
Petrophytum caespitosum
Rocky Mountain rockmat
Specimens
Photos

Distribution: Occurring east of the Cascades crest in southeastern Washington; southeastern Washington to California, east to Montana, Idaho, New Mexico, Texas, and South Dakota.

Habitat: Dry, limy or granite cliffs, ledges, talus, and rocky slopes, lowland to alpine.

Flowers: June-August

Origin: Native

Conservation Status: Endangered in Washington (WANHP)

Description:

[none provided]


Accepted Name:
Petrophytum caespitosum (Nutt.) Rydb.
Publication: Mem. New York Bot. Gard. 1: 206. 1900.

Synonyms & Misapplications:
Eriogynia caespitosa (Nutt.) S. Watson
Luetkea caespitosa (Nutt.) Kuntze
Spiraea caespitosa Nutt.
Infraspecies:
ssp. caespitosum – Rocky Mountain rockmat   Occurring east of the Cascades crest in southeastern Washington; southeastern Washington to California, east to Montana, Idaho, New Mexico, Texas, and South Dakota.
Additional Resources:

PNW Herbaria: Specimen records of Petrophytum caespitosum in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Petrophytum caespitosum checklist entry.

E-Flora BC: Petrophytum caespitosum atlas page.

CalPhotos: Petrophytum caespitosum photos.

USDA Plants: Petrophytum caespitosum information.

5 photographs:
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