| Aquifoliaceae | |
Ilex fragilis fo. fragilis
| | | |
| Aquifoliaceae | |
Ilex fragilis fo. genuina
| Loes. | Nov. Actorum Acad. Caes. Leop.-Carol. German. Nat. Cur. 28: 493 | 1901 |
| Aquifoliaceae | |
Ilex fragilis fo. kingii
| Loes. | Nova Acta Acad. Caes. Leop.-Carol. German. Nat. Cur. 78: 493 | 1901 |
| Aquifoliaceae | |
Ilex fragilis fo. subcoriacea
| C.J. Tseng | Bull. Bot. Res., Harbin 1(1–2): 39 | 1981 |