| Blue fountain bush | 
 | 
| Rotheca serrata | 
| Scientific classification  | 
| Kingdom: | 
Plantae | 
 
| Clade: | 
Tracheophytes | 
 
| Clade: | 
Angiosperms | 
 
| Clade: | 
Eudicots | 
 
| Clade: | 
Asterids | 
 
| Order: | 
Lamiales | 
 
| Family: | 
Lamiaceae | 
 
| Genus: | 
Rotheca | 
| Species: | 
R. serrata  | 
| Binomial name | 
Rotheca serrata
  | 
| Synonyms | 
- Clerodendrum cuneatum Turcz. 
 
- Clerodendrum divaricatum  Jack 
 
- Clerodendrum grandifolium  Salisb. 
 
- Clerodendrum herbaceum  Roxb. ex Schauer 
 
- Clerodendrum javanicum  Walp. [Illegitimate] 
 
- Clerodendrum macrophyllum  Sims 
 
- Clerodendrum ornatum  Wall. [Invalid] 
 
- Clerodendrum serratum  (L.) Moon 
 
- Clerodendrum serratum var. amplexifolium  Moldenke 
 
- Clerodendrum serratum var. glabrescens  Moldenke
 
- Clerodendrum serratum var. herbaceum  (Roxb. ex Schauer) C.Y.Wu 
 
- Clerodendrum serratum f. lacteum  Moldenke 
 
- Clerodendrum serratum var. nepalense  Moldenke 
 
- Clerodendrum serratum var. obovatum  Moldenke 
 
- Clerodendrum serratum var. pilosum  Moldenke 
 
- Clerodendrum serratum var. velutinum  Moldenke 
 
- Clerodendrum serratum var. wallichii  C.B.Clarke 
 
- Clerodendrum ternifolium  D.Don [Illegitimate] 
 
- Clerodendrum trifoliatum  Steud. 
 
- Cyclonema serratum  (L.) Hochst. 
 
- Rotheca bicolor  Raf. 
 
- Rotheca ternifolia  Raf. 
 
- Volkameria herbacea  Roxb. [Invalid] 
 
- Volkameria serrata  L. 
 
  | 
Rotheca serrata, commonly known as the blue fountain bush, the blue-flowered glory tree or the  beetle killer, is a species of flowering plants in the family Lamiaceae. It is native to India, Sri Lanka and Malaysia.