State Rank Reason (see State Rank above)
Regional endemic of northwestern Montana, northern Idaho, southwestern Alberta and southeastern BC. Many populations, but populations tend to be small.
Stems ascending to erect, often woody at the base, 10–60 cm. Herbage puberulent at least on the stems. Leaves all cauline, narrowly lanceolate, obscurely serrate, 2–12 cm long, mostly sessile, smaller and petiolate below. Inflorescence glandular-pubescent, open-paniculate. Flowers: calyx 9–18 mm long; sepals narrowly lanceolate, not scarious; corolla pale lavender, 25–40 mm long, glabrous, hairy within; anthers wooly-villous, opening across their full length; staminode glabrous. Capsule 1–2 cm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX)
Stony, sparsely-vegetated soil of talus, rock outcrops, open slopes, often along roads; montane, subalpine (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX)