genus Boykinia ge·nus·boy·kinia uncommon noun 1. genus of perennial rhizomatous herbs with flowers in panicles; North America; Japan SynonymsBoykiniagenus Boykinia Related words Broader terms rosid dicot genus Parts Saxifragaceae Part of coast boykinia WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.