Plagiobothrys hirtus, the rough popcornflower, is a plant species with only about a dozen reportedly extant occurrences, all within the Umpqua River watershed in Douglas County, Oregon.

The habitats most suitable for P. hirtus are seasonal wetlands, which are inundated with water from late fall until spring, but may dry out in summer.

After overwintering submerged in water, this facultatively perennial herb bears a basal rosette of leaves which gives rise to a hairy flowering stalk that can be up to 70 cm tall.

The flowers are self-compatible, but need insects to achieve pollination and significant seed set, and can produce up to four tan- to black-colored, one-seeded nutlets.

Under careful monitoring and management, this species now has an excellent chance to be self-sustaining in the future, assuming additional populations can be established on administratively protected lands.