Arthas' Tears

Arthas' Tears is an Herb that can be gathered with Herbalism (220).

Source
This item can be gathered by herbalists from the corpses of plant mobs in Dire Maul and Maraudon.

History
Prior to Cataclysm, Arthas' Tears could be found in Western Plaguelands, Eastern Plaguelands and Felwood. These nodes appear to have since been replaced with those of other herbs.

When Razorfen Downs was updated for Patch 6.0.2, the remaining nodes for this herb were replaced with other herbs or removed entirely.

As a quest objective

 * Collection of Goods

Inscription
Milling Arthas' Tears can give the following:
 * Violet Pigment
 * Ruby Pigment

Speculation

 * It is speculated that since Arthas' Tears share the same icon as Stratholme Lily, this was the name of the flower before Arthas' purging of Stratholme in the Third War, after which it was renamed.