Task: Text Categorization
Input (English): Context: 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.This plant is a clumpy mat-forming perennial herb growing in cracks and crevices in riverside cliffs.
Question: The document can be classified to which topic? 
Options: 1)Company, 2)Album, 3)Athlete, 4)Plant
Output (English): 4