Proc. Acad. Nat. Sci. Philadelphia 85: 93. 1933.
Leaves persistent, some withering in 2d year as new leaves expand; blade oblong-ovate to ovate, 25+ mm wide, not leathery, base lobate, margins pinnately lobed or 2- or 3-pinnatifid, teeth apices obtuse, surfaces canescent; basal veins extending through proximal 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 10–30, loosely aggregated. Sepals 4. Petals (3 or)4(or 5), apex entire or erose, adaxials not flat; corolla blue, ± regular, campanulate, much longer than calyx, glabrous, tube conspicuous. Stamens epipetalous. Ovaries: ovules 10–16. Capsules hairy. 2n = 24.
Phenology: Flowering May–Aug; fruiting Jun–Sep.
Habitat: Alpine fellfields, talus slopes.
Elevation: 1600–2200 m.
Synthyris lanuginosa is restricted to the Olympic Mountains of northwestern Washington.