Distribution: Southern Washington to the southern Sierra Nevada, California, at medium to high elevations.
Habitat: On Aster, Spraguea, and other hosts.
Flowers: July - September
Conservation Status: Review Group 1 in Washington (WANHP)
Parasitic, twining, perennial herbs, with very slender, pinkish-yellow to white glabrous stems, often forming large mats.
: Leaves reduced to tiny scales.
Flowers 2.5-3 mm. long, 4- to 5-merous, borne in few-flowered clusters on pedicles 1-3 mm. long; calyx broad, nearly equaling the corolla, its lobes ovate-lanceolate, acuminate, spreading; corolla bell-shaped with a cap-like covering, lobed about half its length, the lobes ovate-lanceolate, erect; stamens inserted just below the sinuses of the corolla; filament scales variable; styles 2,considerably shorter than the ovary; ovary 2-celled, ovoid-conic, superior.