Solidago lepida , the western Canada goldenrod or western goldenrod, is a North American plant species in the genus Solidago of the sunflower family. It is widespread across much of Canada, the western United States, and northern Mexico. Description Solidago lepida is a perennial herb up to 150 cm (5 feet) tall, spreading by means of underground rhizomes. Leaves have coarse teeth and are on the stem rather than at the base. One plant can sometimes produce as many as 800 small flower heads, each with 7-22 ray florets surrounding 2-13 disc florets.