Navarretia filicaulis
 Navarretia filicaulis is a species of flowering plant in the phlox family known by the common name threadstem pincushionplant. It is endemic to California where it is known only from the foothills of the northern Sierra Nevada and far southern Cascade Range. It grows in chaparral woodland and other local habitat. It is a hairy glandular annual herb producing a crooked slender branching stem up to about 18 centimeters tall.