BioStor
 | The genus Ilex in China, [I] S Y Hu (1949) Journal of the Arnold Arboretum 30: 233-344 |
 | Ilex in Taiwan and the Liukiu Islands S Y Hu (1953) Journal of the Arnold Arboretum 34: 138-162 |
 | Synopsis of the Genera and Suprageneric Taxa of Euphorbiaceae Grady L Webster (1994) Annals of the Missouri Botanical Garden 81: 33-144 |
 | The Contribution of Embyrology to the Systematics of the Euphorbiaceae R N Kapil and A K Bhatnagar (1994) Annals of the Missouri Botanical Garden 81: 145-159 |