lowbush penstemon low·bush·pens·temon uncommon noun 1. low bushy plant with large showy pale lavender or blue-violet flowers in narrow clusters at ends of stems Synonymsshrubby penstemonlowbush penstemonPenstemon fruticosus Related words Broader terms wildflower Parts Penstemon WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
