It is likely Nuttall's Linanthus -----or Leptosiphon nuttallii ssp? pubescens ??
or possibly another subspecies of that.
The pictures give a bushier plant---and this is skimpy.
Could be skimpy because growing in shade.
There are subspecies which are native into Montana so I am hoping it survives the winter.
I am also saving seeds because it is considered vulnerable in Montana.
Linanthus grandiflora is likely the right name. Also called Mountain Phlox.
