Roughfruit popcornflower (Plagiobothrys trachycarpus)
Same genus
- Adobe popcornflower (Plagiobothrys acanthocarpus)
- Arizona popcornflower (Plagiobothrys arizonicus)
- Austin's popcornflower (Plagiobothrys austiniae)
- Bracted popcornflower (Plagiobothrys bracteatus)
- Valley popcornflower (Plagiobothrys canescens)
- Artist's popcornflower (Plagiobothrys chorisianus)
- Cooper's popcornflower (Plagiobothrys collinus)
- California popcornflower (Plagiobothrys distantiflorus)