Welcome, rtourtelot and islander:
You have a really handsome Doublefile Viburnum there, with its lacecap blooms that have sterile florets that surround the fertile flowers. Its full botanical name is Viburnum plicatum f. tomentosum, which separates it from the intensely cultivated Viburnum plicatum f. plicatum - the Japanese Snowball Viburnum, - which has large blooms of clustered sterile florets.
There are quite a few named selections of Doublefile Viburnum, including 'Shasta', 'Mariesii', 'Shoshoni', 'Summer Snowflake', and many more. With any two different ones, you will get cross-pollination necessary to achieve fabulous fruiting in midsummer - rich red clusters which will age to black if no birds ever visit your yard.
