Chionophila tweedyi
Bull. Torrey Bot. Club 27: 352. 1900.
Stems 1–4, (5–) 10–18 (–25) cm, glabrous or sparsely glandular-pubescent. Leaves: basal and proximal cauline, blade oblanceolate, (8–) 25–90 × (1–) 3–13 mm, surfaces glabrous; cauline 1–4 pairs, blade narrowly lanceolate to linear, 2–22 × 1–3 mm. Racemes 1–7 cm, verticillasters 4–10, interrupted, glandular-pubescent; bracts lanceolate, proximal ones 3–9 × 1–3 mm. Pedicels 0–7 mm, glandular-pubescent. Flowers: caly× tube 1–2 mm, glandular-pubescent, lobes triangular to narrowly ovate, 2.5–3 × 1.4–2 mm; corolla pale lavender, 9–14 mm, glabrous externally, palate and proximal parts of abaxial limb glandular-pubescent, hairs to 0.1 mm, tube 1–2 mm, pollen-sacs 0.3–0.4 mm, explanate; staminode 4–5 mm; style 6–7 mm. Capsules 6.5–9 × 4–5 mm. Seeds brown, elliptic-disciform, 2.4–3 mm.
Phenology: Flowering Jun–Aug.
Habitat: Talus slopes, meadows, usually near timber lines.
Elevation: 2100–3200 m.
Discussion
Chionophila tweedyi is known from central Idaho and southwestern Montana.
Selected References
None.