All Species in Holocarpha
- Heermann's Tarweed (Holocarpha heermannii)
- Holocarpha virgata subsp. elongata (Holocarpha virgata subsp. elongata)
- Holocarpha virgata subsp. virgata (Holocarpha virgata subsp. virgata)
- San Joaquin Tarweed (Holocarpha obconica)
- Santa Cruz Tarplant (Holocarpha macradenia)
- Yellowflower Tarweed (Holocarpha virgata)