Polemonium foliosissimum var. molle
Apparently the flowers are more often blue, but this white form is the only one I've seen so far.
A flower on the east side of the Manzano Mountains, Torrance County, New Mexico, 15 Jun 2005.
Flowering stem in the Manzano Mts., 15 Jun 2005.
A cauline leaf in the Manzano Mts., 15 Jun 2005.
Purple flowers, near Bluff Spring in the Sacramento Mountains, Otero County, New Mexico, 8 Jul 2007.