Mexican Fan Palm Tree, Skyduster Palm, Thread Palm, Mexican Cotton Palm. Description Washingtonia robusta, commonly known as the Mexican fan palm, is a tall and slender palm tree with a grayish-brown trunk that tapers as it rises, often reaching heights of 20–30 meters (65–100 feet). Its crown consists of large, fan-shaped leaves measuring about 1–1.5 … Continue reading Washingtonia robusta