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