Epilobium glaberrimum subsp. fastigiatum
Ann. Missouri Bot. Gard. 71: 342. 1984.
Stems 5–35 cm, sometimes sparsely strigillose and glandular puberulent distally, rarely with faint raised strigillose lines decurrent from margins of distal petioles. Leaf-blades usually blue-green, lanceolate to narrowly ovate or elliptic, (0.5–) 1–3.4 × (0.3–) 0.7–1.8 cm, length/width ratio less than 4. Flowers: floral-tube 0.9–1.4 × 1–2.2 mm; sepals 2.5–5.2 × 0.8–1.6 mm; petals rose-purple to pink, 3.4–8 × 1.8–3.9 mm; filaments of longer stamens 2.4–5 mm, those of shorter ones 1.6–3 mm; ovary 10–34 mm, style 2.2–3.6 mm. Capsules 15–45 (–55) mm. 2n = 36.
Phenology: Flowering Jun–Sep.
Habitat: Rocky, well drained soil, moist alpine slopes, seepage, talus slope, stream banks, bogs, mainly upper montane to alpine.
Elevation: (1000–)1200–3500 m.
Distribution
Alta., B.C., Calif., Idaho, Mont., Nev., Oreg., Utah, Wash., Wyo.
Discussion
Subspecies fastigiatum occurs primarily along the Sierra Nevada-Cascade axis, but also ranges through the Basin Ranges to the Rocky Mountains from northern Wyoming to southern Alberta and British Columbia.
Selected References
None.
Lower Taxa
"narrower" is not a number.