Grindelia camporum seed
This hardy plant readily grows in disturbed and altered areas such as ditches and roadsides. It is a gangly weedlike perennial topping two metres in maximum height. Its erect, branching stems are lined with many stiff, wavy-edged, serrated leaves 2 to 3 cm long. Atop the stem branches are inflorescences of a single largehead up to 3 cm wide. The head is a vaguely thistlelike cup of green clawlike phyllaries that bend downward. The centre of the head is filled with yellow disc florets and there are usually many yellow ray florets around the circumference. The flower head fills with a copious white exudate, especially during the early stages of blooming.