Polemonium P. pulcherrimum
Galen, C.

V. Grant. 1989. Taxonomy of the tufted alpine and subalpine Polemoniums (Polemoniaceae). Bot. Gaz. (Crawfordsville) 150: 158–169.

Pritchett, D. W. and R. Patterson. 1999. Systematic implications of morphological patterns in alpine Polemonium (Polemoniaceae). Madroño 45:200-209.
Acanthogilia Aliciella Allophyllum Bonplandia Bryantiella Cantua Cobaea Collomia Dayia Eriastrum Gilia Giliastrum Gymnosteris Ipomopsis Langloisia Lathrocasis Leptodactylon Leptosiphon Linanthus Loeselia Loeseliastrum Microgilia Microsteris Navarretia Phlox Polemonium Saltugilia