The goal on this site is safety of final product, but handling of the wood, avoidance of fumes//dust, etc, can be derived from this list.
Some information explaining the terms (like Sensitizer) on the bottom of the page.
Some, like YEW, are pretty straight forward, (DIRECT TOXIN), and Oleander goes even further since every aspect is Toxic.
http://www.wood-database.com/wood-articles/wood-allergies-and-toxicity/