Ilex, Linnaeus, 1753

Lozada-Pérez, Lucio, 2019, A new species of Ilex (Aquifoliaceae) from Mexico, Phytotaxa 409 (5), pp. 296-300 : 297-299

They can be distinguished with following key.

1. Female flowers in fasciculate cymes..................................................................................................................................................2

- Female flowers in solitary cymes.......................................................................................................................................................8

2. Petiole 1.5 ‒ 4.0 cm long......................................................................................................................................................................3

- Petiole 0.7 ‒ 1.3 cm long.................................................................................................................................................. Ilex anodonta

3. Leaf blade 15.0 ‒ 40.0 cm long, 10 ‒ 15 cm wide ............................................................................................................... Ilex máxima

- Leaf blade 4.0 ‒ 22.0 cm, 2.0 ‒ 9.0 cm wide..........................................................................................................................................4

4. Leaf blade 9.0 ‒ 22.0 cm long ................................................................................................................................. Ilex montebellensis

- Leaf blade 4.0 ‒ 9.0 cm long................................................................................................................................................................5

5. Underside of leaves with yellow venation...................................................................................................................... Ilex tectonica

- Underside of leaves with venation of the same colour as blade.........................................................................................................6

6. Young branches glabrous............................................................................................................................................... Ilex belizensis

- Young branches puberulent to glabrescent.........................................................................................................................................7

7. Fruiting dichasia branched to 2 orders; fruit 0.9 ‒ 1.1 cm long .................................................................................... Ilex fortunensis

- Underside of leaves with venation of the same colour as the blade................................................................................. Ilex skutchii

8. Leaf blade elliptic to ovate.................................................................................................................................................................9

- Leaf blade spatulate, obovate to lanceolate......................................................................................................................................10

9. Staminate inflorescences with peduncles 4.0 ‒ 10.0 cm long; pistillate inflorescences in compound dichasia ........ Ilex costaricensis

- Staminate inflorescences with peduncles 0.3 ‒ 0.9 cm long; pistillate inflorescences reduced to single flower................. Ilex haberi

10. Female flowers in compound dichasia, the pedicels articulate .................................................................................... Ilex guianensis

- Female flowers in simple dichasia, the pedicels not articulate ................................................................................ Ilex quercetorum