Do you know about the Grass Widow? (Sisyrnchium Inflatum)? The Grass Widow is a member of the Iris family. This plant does well in the slightly acidic soil deposited by needles of the Ponderosa pine found around the base of the tree. Grass Widows compete with the Buttercup to be the first bloomer in the Spring. There is only one species of Grass Widow in the West, with two varieties: inflatum, found mostly to the East of the Cascades, and douglasii, found mostly to the West of the Cascades.