From Wiktionary, the free dictionary
From the genus name.
geum (plural geums)
- Any of the genus Geum of perennial herbaceous plants.
2009 August 13, Anne Raver, “A Tapestry of Color, Unfolding All Year”, in New York Times[1]:The circles, which were ablaze with daffodils this spring, are now afloat with airy geum, cosmos, acidanthera and dahlias.