| Name | Croton cumingii var. angustifolius Gagnepain |
| Authorship | Gagnepain |
| Rank | Variety |
| NomenclaturalStatus | NomLeg |
| Placed in | Croton cumingii Müller Argoviensis |
| Citation | 1925 Fl. Indo-Chine [P.H. Lecomte et al.] 5: 265 |
| Holdings | 4 Specimens held in the Harvard University Herbaria identified as Croton cumingii var. angustifolius Gagnepain |
| Identification made in | [no date] (2), 2001 (2) |