| 1. Sepals 3; flowers solitary |
| C. ladanifer |
| 1' Sepals 5; flowers generally in panicle-like cymes |
| |
| 2. Style thread-like, ± = stamens; petals rose to purple |
| C. creticus |
| |
| 3. Leaf sessile, linear to linear-lanceolate, generally with 3 main veins from base; pedicel < 1 cm |
| C. monspeliensis |
| 3' Leaf petioled, blade ovate to elliptic, generally with 1 main vein from base; pedicel generally > 1 cm |
| C. salviifolius
|