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
Growth Duration: Perennial
Conservation Status: Endangered in Washington (WANHP)
Pollination: Bees
Description:
[none provided]
Accepted Name:
Petrophytum caespitosum (Nutt.) Rydb.
Publication: Mem. New York Bot. Gard. 1: 206. 1900.
Publication: Mem. New York Bot. Gard. 1: 206. 1900.
Synonyms & Misapplications:
Eriogynia caespitosa (Nutt.) S. Watson
Luetkea caespitosa (Nutt.) Kuntze
Spiraea caespitosa Nutt.
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
OregonFlora: Petrophytum caespitosum information
E-Flora BC: Petrophytum caespitosum atlas page
CalPhotos: Petrophytum caespitosum photos
5 photographs:
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