Here images of three different Acer truncatum also known as "Purple-blow Maple" and/or "Shantung Maple". This species grows to as much as 45' or more but is more often listed in the U.S. as a 20'-25' tree. It produces a broad, round crown. Growth rate is reported to be slow. Closely related to Acer pictum this species has been hybridized with Acer platanoides to produce some commercially available cultivars i.e. 'Keithsform' and 'Warrenred'. I prefer the straight species myself. It is hardy to zone 5, extremely drought tolerent and pest and disease resistant. It has a deeply ridged trunk which sets it apart from most other maples but the species name,"truncatum", is in reference to the truncate leaf base. New growth emerges as a sort of purple/orange color turning to a glossy,medium green for the remainder of the growing season. In fall the color is predominantly a buttery yellow with some orange and a a little red. Some people have expressed concern that this species will self sow and become a weed tree problem but I have never seen any volunteers in any adjacent areas around the plantings of this species here in the Tennessee Valley. The features of this tough little maple make it an ideal candidate for urban plantings.