Both are in the Vaccinium genus. European blueberries are Vaccinium myrtillus. Red huckleberries are Vaccinium parvifolium. Alaskan blueberries are Vaccinium ovalifolium. Then there's evergreen huckleberries which are Vaccinium ovatum. There's also blueleaf huckleberries which are Vaccinium deliciosum.

All of these species look fairly similar.

The one mentioned in the article is Vaccinium parvifolium.

https://en.m.wikipedia.org/wiki/Vaccinium_parvifolium

They have red berries that taste fairly different than most of the other species I listed. Most of the blue ones though taste fairly similar.