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Acer mandschuricum
Known for its tolerance of extreme cold and its unusual foliage, Acer mandschuricum (Sapindaceae) is a rare sight, even in botanical gardens.
Acer mandschuricum is one of only seven or eight maples that normally exhibit compound leaves. The leaves of Manchurian maple are differentiated from similar trifoliate species by their mostly glabrous (hairless) surfaces and long, wire-like terminal petiolules (leaflet stems). Typically low-branching in nature, cultivated trees are usually pruned to a standard form (i.e., with a scaffold of branches atop a clean stem) which gives them an ungainly appearance. Native to Siberia, Korea and Manchuria.
