Stems 15–60 cm, clustered on the caudex. Leaves mainly cauline 2–8 cm long; blades narrowly lanceolate, serrate, not lobed. Inflorescence sparsely flowered, 3–7 cm long; bracts leaf-like. Flowers: calyx 4–8 mm long, 2-lobed, more deeply cleft adjacent to the lower lip, the lobes 1–3 mm long; corolla white, 12–15 mm long; galea 5–9 mm long with a long beak curved into a semicircle; lower lip wide, the 2 outer lobes much wider than the central one. Capsule 8–14 mm long (
Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).
Our plants are variety
alba (Pennell) Cronquist
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 bifarius,
Bombus fervidus,
Bombus flavifrons,
Bombus frigidus,
Bombus melanopygus,
Bombus mixtus,
Bombus rufocinctus,
Bombus sylvicola,
Bombus occidentalis, and
Bombus kirbiellus (Plath 1934, Macior 1974, Wilson et al. 2010, Miller-Struttmann and Galen 2014, Williams et al. 2014).