I have strophostyles in my yard and they do not look like that. Both helvola and umbellata look identical except for a small difference in bract on the flower. They start out light pink and fade to a cream color. Strophostyles leiosperma bloom is much smaller than the other two.
Strophostyles new bloom color.
Old bloom color.
Strophostyles leiosperma on left S. umbellata or helvola on right.