| Lyonothamnus | |
|---|---|
| |
| Lyonothamnus floribundus subsp. aspleniifolius leaf | |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Rosales |
| Family: | Rosaceae |
| Subfamily: | Amygdaloideae |
| Tribe: | Lyonothamneae |
| Genus: | Lyonothamnus A.Gray |
| Species: | L. floribundus
|
| Binomial name | |
| Lyonothamnus floribundus A.Gray
| |
| Subspecies | |
| |
Lyonothamnus is a monotypic genus of trees in the rose family containing the single living species Lyonothamnus floribundus, which is known by the common name Catalina ironwood, and the subspecies L. f. ssp. aspleniifolius and L. f. ssp. floribundus.