The Macarthur palm is a clumping, feather-leafed, crownshaft palm. Its crownshaft and leaves are a dark, emerald green and its fullness makes it an excellent wind block or privacy palm. Typical maximum height reaches up to 35 feet with a 15-20 foot spread. Very similar looking to its 'cousin', Ptychosperma schefferi, this particular species tends to have a more whimsical shape to its petioles rather than a vertical leaf. The genus 'Ptychosperma' comes from the Greek word 'ptychos' which means wrinkled.