Petradoria pumila (Nutt.) Greene

Genus Classification

Petradoria is a genus of North American subshrubs that belongs to the tribe Astereae of the plant family Asteraceae.

Type Species

The only known species in this genus is Petradoria pumila, which is commonly called rock goldenrod.

Species Distribution

This species is native to the western United States, specifically found in California, Arizona, Nevada, Utah, New Mexico, Colorado, Wyoming, and Idaho.

Flowering Characteristics

It is quite common in some parts of its range, where it forms dense carpets of yellow blooms.

Reclassified Former Taxon

One taxon previously classified in the Petradoria genus, Petradoria discoidea L.C.Anderson, is now reclassified as Cuniculotinus gramineus (H.M.Hall) Urbatsch, R.P.Roberts & Neubig.

Recognized Subspecies

Two subspecies of Petradoria pumila are currently recognized: Petradoria pumila subsp. pumila and Petradoria pumila subsp. graminea (Wooton & Standl.) L.C.Anderson.