Eucephalus gormanii

Eucephalus gormanii is a North American species of flowering plant in the aster family known by the common name Gorman’s aster. It grows on rocky slopes and on cliffs at high elevations in the Cascade Mountains of the US State of Oregon.
"Eucephalus gormanii" is a perennial herb up to 40 cm (16 inches) tall, with short rhizomes and a woody caudex. Stems are hairless. One plant will usually produce 2-5 flower heads per stem. Each head has 5-13 white ray florets surrounding numerous yellow disc florets.