This Carlcephalum Viburnum is a hybrid between the very commonly planted Koreanspice Viburnum (V. carlesi) x the uncommon Chinese Snowball Viburnum (V. macrocephalum var keteleeri) that was done in 1932 in England at the Burkwood & Skipwith Nursery and introduced to the US about 1957. It is larger growing than the Koreanspice, usually about 8 to 10 or more feet high, with larger leaves (4 to 5 inches long) and larger round flower clusters 5 to 6 inches in diameter that are also very fragrant. The Chinese Snowball is not fragrant. I've only seen a few of this hybrid species in the Chicago, Illinois area in a well-to-do neighbourhood and in the Philadelphia, Pennsylvania area at a business park campus.

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