Horkelia bolanderi- Horkelia californica
- Horkelia clevelandii
- Horkelia congdonis
- Horkelia congesta
- Horkelia cuneata
- Horkelia daucifolia
- Horkelia fusca
- Horkelia hendersonii
- Horkelia hispidula
- Horkelia howellii
- Horkelia integrifolia
- Horkelia laxiflora
- Horkelia marinensis
- Horkelia myriophylla
- Horkelia parryi
- Horkelia parviflora
- Horkelia pinetorum
- Horkelia platycalyx
- Horkelia pulchra
- Horkelia rydbergii
- Horkelia sericata
- Horkelia tenuiloba
- Horkelia tenuisecta
- Horkelia tridentata
- Horkelia truncata
- Horkelia tularensis
- Horkelia wilderae
- Horkelia yadonii