Right. Simple answer. I know this information is posted somewhere on the forums, either in the Players Resources or the Announcements forums, it is possible that it was not transferred to the Players Resources when that was set up.
**Weapons: Druids can use ONLY the weapons listed in the Druid Weapon Proficiency, OR the favoured weapon of their deity. The material the weapon is made from is entirely 100% irrelevant.
Armour: Druids are permitted to use ANY armour so long as it is not made from metal.**
Druids of Mielikki are an exception to the rule They are permitted to use ANY Simple or Martial weapon, and ANY Light Armour, Medium Armour or Shield. No matter what it is made of. (Please note, this does mean that if a Druid of Mielikki wants to use heavy armour he IS still restricted from using metal ones.)
(The only Druid deitys that permit the use of a bow are the Elven god of the hunt Solonor Thelandira (Longbow) and Mielikki (Long/Shortbow, Heavy/Light Crosbow)
These rules are bloody weird and make no sense. (and even less sense when you see the list of weapons that are or are not permitted) They stem from the Druid Equipment rules of 3.0 Edition D&D. In 3.5 the weapon restrictions are lifted, whilst druids only get the druid proficiency on creation, they are permitted to use any weapon they like if they later take the proficiency.