Montana Field Guide

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 et al. 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 et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

POLLINATORS
The following animal species have been reported as pollinators of this plant species or its genus where their geographic ranges overlap: Bombus vagans, Bombus appositus, Bombus auricomus, Bombus bifarius, Bombus centralis, Bombus fervidus, Bombus flavifrons, Bombus frigidus, Bombus huntii, Bombus melanopygus, Bombus mixtus, Bombus nevadensis, Bombus rufocinctus, Bombus sylvicola, Bombus occidentalis, Bombus pensylvanicus, Bombus bimaculatus, Bombus griseocollis, Bombus impatiens, Bombus insularis, Bombus suckleyi, Bombus bohemicus, and Bombus kirbiellus (Macior 1974, Thorp et al. 1983, Bauer 1983, Mayer et al. 2000, Wilson et al. 2010, Colla and Dumesh 2010, Colla et al. 2011, Koch et al. 2012, Pyke et al. 2012, Miller-Struttmann and Galen 2014, Williams et al. 2014, Tripoldi and Szalanski 2015).