Synthyris borealis
Proc. Acad. Nat. Sci. Philadelphia 85: 88, fig. 1. 1933.
Leaves persistent, some withering in 2d year as new leaves expand; blade ovate to cordate, 25+ mm wide, not leathery, base lobate, margins laciniate, teeth apices rounded, surfaces villous, hairs prominent on margins; basal veins extending into distal 1/2 of blade, lateral-veins 2–4 on each side of midvein. Racemes erect, to 15 cm in fruit; sterile bracts 3+, ovate-spatulate, largest 1+ cm; flowers 15–50, loosely aggregated. Sepals 4. Petals (3 or) 4 (or 5), apex entire or erose; corolla blue, ± regular, campanulate, much longer than calyx, glabrous, tube conspicuous. Stamens epipetalous. Ovaries: ovules 10–16. Capsules hairy. 2n = 24.
Phenology: Flowering May–Jul; fruiting May–Sep.
Habitat: Tundra heaths, fellfields, talus slopes.
Elevation: 200–2500 m.
Distribution
N.W.T., Yukon, Alaska.
Discussion
Synthyris borealis is distributed primarily in unglaciated portions of the Northwest Territories, Yukon, and Alaska.
Selected References
None.