What is the latin word for ivy?

Ivy = Hedera (-ae, f).

The scientific name for Ivy depends on which of the 13 the species you're talking about:

1. Hedera algeriensis Hibberd - Algerian ivy. Algeria, Tunisia (Mediterranean coast).
2. Hedera canariensis Willd. - Canaries ivy. Canary Islands.
3. Hedera colchica (K.Koch) K.Koch - Persian ivy. Alborz, Caucasus, Turkey.
4. Hedera cypria McAllister - Cyprus ivy (syn. H. pastuchovii subsp. cypria (McAll.) Hand). Cyprus (Troodos Mts.)
5. Hedera iberica (McAllister) Ackerfield & J.Wen - Iberian ivy. SW Iberian coasts.
6. Hedera maderensis - Madeiran ivy. Madeira.
7. Hedera maroccana McAllister - Moroccan ivy. Morocco.
8. Hedera nepalensis K.Koch - Himalayan ivy (syn. H. sinensis (Tobl.) Hand.-Mazz.). Himalaya, SW China.
9. Hedera pastuchowii G.Woronow - Pastuchov's ivy. Caucasus, Alborz.
10. Hedera rhombea (Miq.) Siebold ex Bean - Japanese ivy. Japan, Korea, Taiwan.
11. Hedera azorica Carrière - Azores ivy. Azores.
12. Hedera helix L. - Common ivy (syn. H. caucasigena Pojark., H. taurica (Hibberd) Carrière). Europe, widespread.
13. Hedera hibernica (G.Kirchn.) Bean - Atlantic ivy (syn. H. helix subsp. hibernica (G.Kirchn.) D.C.McClint.). Atlantic Western Europe.