Arrowwood branches are still around. They are required to make the militia bow. An item you can turn in for points toward the provisioner status in hamlet defense. They are found -1 on grade 5 trees in thanalan around halitali. Desciplesoftheland.com is an excellent source for needing to find where an item can be gathered. Click the items tab and search by grade, area, and type of gathering.
Militia Bows use Rosewood Branches, which is what can be found at Halitali.
According to SE, as of 1.21
Arrowwood Branches are listed as an item that "may be used again in a future patch."
But they haven't since been reintroduced.
Even disciplesoftheland.com has removed any gathering information for the item and left only a placeholder
. Edited, Jul 3rd 2012 1:41pm by Sephrick