[Cal-IPC] Mexico, Texas, Argentina, Chile native, Invasive: Stipa tenuissima (Mexican feathergrass) is a perennial grass (family Poaceae) that can grow to be 2 feet tall and is found in the central and south coast ranges of California. It is native to Mexico, Texas, Argentina and Chile. It favors grasslands and woodlands. It spreads only by seeds which are dispersed by livestock, humans, wind and water. Seeds adhere to clothing and fur. Cal-IPC Rating: Watch (contributed by Mary Ann Machi)