Are both points together a 60% increase per green globe or does the Horde's Vitality just make minions that die also drop globes for 30% extra damage as poison?

Undertaker: Enemies that die near you have a chance to drop a green globe. If picked up, the globe will increase your Poison damage for a short duration. This bonus stacks with each globe picked up.

Horde's Vitality: Enemies that die in 20m radius around you have 10% chance to drop green globes. Picking up green globes grants you an additional 30% Damage as Poison Damage for 5s