Marauder using cross class skills with Botanist?

I think I saw on FFXIV:ARR's wiki page that one of the abilities shared with Marauders are some of the botanist abilities such as triangulate and arbor call. However when I set them, I get an error message saying that I don't have the correct weapon equipped to use the skill.

WAR would be a fantastic botanist.

Infuriate > Arbor call > Unchained >tomahawk > Leaf turn > Heavy swing > Berserk> Skull Sunder > Ageless words > Butchers block > Brunt force > Fracture.

They already have the axe afterall...