Collomia diversifolia is a species of flowering plant in the phlox family known by the common name serpentine collomia. It is endemic to California, where it is a member of the serpentine soils flora in the North Coast Ranges from the northern San Francisco Bay Area to Shasta County. It is a small annual herb with many branches bearing dark lance-shaped leaves, the most basal ones having three small teeth. Leaves and stems are lightly to densely covered with glandular hairs. The inflorescence is a cluster of several flowers each about a centimeter wide. The star-shaped flower has pointed violet lobes with yellowish bases coming together at a purple throat.
| Collomia diversifolia | |
|---|---|
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Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Ericales |
| Family: | Polemoniaceae |
| Genus: | Collomia |
| Species: | C. diversifolia |
| Binomial name | |
| Collomia diversifolia | |
