Petrophytum cinerascens [SEP] parent taxon
Petrophytum cinerascens
Petrophytum cinerascens (orth. var. "Petrophyton cinerascens") is a rare species of flowering plant in the rose family known by the common names halfshrub rockmat and Chelan rockmat. It is endemic to the state of Washington in the United States, where it occurs in just a few locations along the Columbia River in Chelan and Douglas Counties.
Description.
"Petrophytum cinerascens" is a mat-forming perennial herb growing in cracks and crevices in riverside cliffs. The stems are up to long, arising
taxon is Leiothrichidae .
Another taxonomy revision was the renaming of the Rufous-vented grass babbler ("Laticilla burnesii") and Swamp grass babbler ("Laticilla cinerascens") from "Prinia" (in the Cisticolidae family) to "Laticilla" . Data sequencing using mitochondrial and nuclear markers revealed that "P. burnesii" and "P. cinerascens" belonged in a different family to the other members of Cisticolidae, with the results supported by Bayesian inference 
The family includes 70 species divided into 15 genera:. 
Laticilla